Madison County IA Auditor Property Search, Tax & GIS

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Madison County, Iowa · Property cards, taxes, GIS, deeds, exemptions and appeals

Find a Madison County Parcel and Complete the Next Property Task

Search Madison County property records by owner, address or parcel information, then review assessed value, land, buildings, sales, sketches, photographs and mapped location.

This guide explains the full Iowa workflow: the Assessor values property, the Auditor applies rollback percentages and credits, the Treasurer collects taxes, the Recorder maintains deeds, and Zoning handles development in unincorporated areas.

Get the quick answer Follow property-search steps Review September tax action
Office-role warning: The Madison County Auditor does not establish ordinary real-estate assessments. Start with the Assessor’s property search for value and parcel information, then use the Auditor, Treasurer, Recorder or Zoning Department for the next action.

Quick answer: begin with the Assessor search

Open the Madison County Assessor’s Real Estate Search, accept the property-data disclaimer, search by owner or property information, open the correct property card and save its parcel number before checking taxes, GIS, sales, deeds, credits or an assessment appeal.

1 Search broadly Start with one surname, road or parcel number.
2 Verify the property Match the parcel, address and acreage.
3 Save the property card Keep assessment, building and sale details.
4 Use the correct office Auditor, Treasurer, Recorder or Zoning.

Madison County property quick facts

Property search Madison County Assessor
Available records Cards, sales, buildings, photos and sketches
GIS system CAMAvision Maps
Assessor 515-462-4303
Auditor 515-462-3914
Treasurer 515-462-1542
Recorder 515-462-3771
Zoning 515-462-2636
Assessment date January 1
County hours Monday–Friday, 8 a.m.–4:30 p.m.

The search system can display residential, commercial and agricultural buildings, sales searches, sketches, photos and printable property cards. Use the GIS link after identifying the correct parcel.

Open official property search Open Assessor property hub Open official GIS map

Choose the exact property task

The guide is organised by the action a property owner, buyer, lender, researcher or professional needs to complete.

Office-routing guide

Which Madison County office handles your question?

Use the office that controls the record or action
Your question
Correct office or tool
What it handles
Important limit
What is the property worth for assessment purposes?
Assessor
Real-property assessment, property cards, building records, sales and Board of Review support.
The Auditor does not establish the ordinary assessment.
How were taxable value and levies calculated?
Auditor
Rollback application, credits, exemptions, tax levies and preparation of tax books.
The Auditor does not collect the payment.
What amount is currently due?
Treasurer
Tax statements, balances, online payments, partial payments, penalties and tax sale.
The Treasurer cannot change the assessed value.
Where is the parcel?
CAMAvision GIS
Parcel location, nearby properties, roads, aerial context and map layers.
GIS parcel lines are not exact surveyed boundaries.
Where is the deed, mortgage or lien?
Recorder / Iowa Land Records
Recorded deeds, mortgages, liens, easements, plats, surveys and certified copies.
A record search is not a legal title opinion.
Can I build, divide or change the property’s use?
County or city zoning office
Zoning, subdivisions, permits, floodplain, addresses and development review.
County Zoning generally serves unincorporated areas.
How do I challenge the value?
Assessor / Board of Review
Informal assessment review and formal April assessment protests.
Deadlines cannot normally be extended.
Best workflow: Find and save the parcel number first. It is more reliable than an owner name when contacting the Auditor, Treasurer, Recorder, Assessor or Zoning Department.
Failed-search troubleshooting

No property result? Follow this recovery order

Owner name returned nothing Search the surname alone, then try the former owner, trust, estate or business.
Full address failed Keep the house number and main street word while removing directions and suffixes.
Rural property is hard to find Search by owner or parcel number and use GIS to locate the tract.
Recent buyer is missing Search the seller and verify the new deed through Iowa Land Records.
New parcel or subdivision Search the parent parcel, prior owner, subdivision name or nearby properties.
Building is missing Contact the Assessor because new construction is assessed according to completion as of January 1.
Removed building is still listed Report demolition, fire, flood or removal to the Assessor with supporting evidence.
Mailing city appears incorrect Verify the physical parcel, township and jurisdiction rather than relying on postal information alone.

Prepare this before contacting the Assessor

Complete property location
Current and former owner names
Possible parcel number
Approximate transfer date
Legal-description or deed clue
Description of construction or removal
Assessor call script “I am trying to locate or correct the property at [address or road]. The current or former owner may be [name], and I have [parcel number, deed reference or transfer date]. Can you confirm the correct parcel and whether the record was split, transferred, combined or updated?”
Call Assessor: 515-462-4303 Email the Assessor
Assessment-record decoder

Understand the property card before acting

Important Iowa property fields and their meaning
Field
What it means
Practical next step
Parcel number
The county identifier for the property record.
Use it for tax, map, deed and appeal research.
Assessed value
The Assessor’s January 1 estimate under Iowa assessment rules.
Contact the Assessor when value or property facts appear incorrect.
Taxable value
Value remaining after rollback, exemptions and applicable limitations.
Do not assume it will equal assessed value.
Rollback
A statewide percentage applied to certain property classes by the Auditor.
Use the assessment year and property class when reviewing the calculation.
Property class
Residential, commercial, industrial, multi-residential or agricultural classification.
Ask the Assessor when the recorded use materially differs.
Agricultural value
Agricultural land is generally assessed using productivity and earning-capacity rules.
Compare soil, use and agricultural-building information.
Building information
Size, age, grade, condition, use and other improvement details.
Document incorrect facts with measurements and photographs.
Sale history
Reported property transfers and consideration information.
Use the Recorder for the complete recorded deed.
Credits and exemptions
Approved benefits reducing taxable value or tax liability.
Contact the Assessor or Auditor when an expected benefit is missing.
Tax statement
The Treasurer’s billing record for the applicable fiscal-year taxes.
Confirm live balance, payment and delinquency with the Treasurer.

Assessed value is not the same as taxable value

The Assessor establishes assessed value as of January 1. The Auditor applies the state-certified rollback percentage and qualifying exemptions or credits. Local levy rates are then used to calculate the tax books sent to the Treasurer.

Eighteen-month timing: Iowa property taxes are paid well after the assessment date. A January assessment generally does not appear as a tax payment obligation until roughly 18 months later.

Report property changes

New house or building
New mobile or manufactured home
Basement or attic finish
Addition or major remodel
Deck, patio or garage
Fireplace or other improvement
Demolished or removed structure
Fire, flood or major damage
Owner responsibility: The county instructs owners to report improvements and property changes. Failure to provide required property information can lead to assessment using the best information available and a statutory penalty.
Upcoming property-tax deadline

The first installment is due September 1, 2026

First installment due September 1, 2026

Pay the current first-half amount.

First installment delinquent October 1, 2026

Monthly penalty begins after the deadline.

Second installment due March 1, 2027

Pay the remaining half.

Second installment delinquent April 1, 2027

Penalty begins on unpaid balance.

Current payment methods and fees

Madison County property-tax payment options
Method
Published fee or rule
Practical instruction
Online e-check
$0.25
Enter the routing and account numbers carefully and save the receipt.
Online debit or credit card
2.25% of the payment
Review the displayed convenience fee before submitting.
In-office cash or check
Accepted during regular hours
Bring the tax statement or parcel number.
In-office debit card
$2 additional fee
Ask for the final total before approving payment.
In-office credit card
2.25% additional fee
The processing fee is added to the tax payment.
Telephone card payment
2.25% additional fee
Have the parcel and card information ready.
Mail
Must receive a timely postmark
Mail early; mailing on the final day does not guarantee a timely postmark.
24-hour drop box
Outside the Annex
Use check or approved payment; do not leave cash.

Micro steps for online payment

Find the parcel number Use the property card, tax statement or real-estate lookup.
Check whether the bill is escrowed A statement sent to an escrowed homeowner may be informational only.
Open the official Iowa Treasurers service Use the link provided by the Madison County Treasurer.
Search by name, address or parcel number Match the property and owner before selecting the bill.
Review the installment and delinquent amount Do not pay a prior-year or neighboring parcel by mistake.
Compare payment fees Online e-check is currently the lowest-cost electronic option.
Submit and save confirmation Retain the date, amount, parcel number and transaction reference.
Verify the payment posted Recheck the online real-estate inquiry or call the Treasurer.
Late-payment cost: Delinquent interest accrues at 1.5% per month, rounded to the nearest dollar, with a minimum penalty of $1.

Partial and scheduled payments

Madison County accepts partial payments toward current property taxes. The online system can also schedule weekly, biweekly, monthly or date-specific payments.

Automatic-payment warning: A manually selected monthly amount may not fully pay the installment by the deadline. Use the automatic calculated amount or monitor the remaining balance to avoid interest.
Treasurer call script “I am calling about parcel [parcel number] at [address]. Please confirm the first installment due September 1, whether an escrow payment is expected, the current balance, any prior delinquency and the lowest-cost payment option.”
Open official online payment Read payment instructions Open real-estate tax lookup Call Treasurer: 515-462-1542
Assessment review and protest

The ordinary 2026 protest window has closed

Annual timeline: Informal assessment review normally runs April 2–25. Formal protests to the Madison County Board of Review normally run April 2–30. The Board cannot ordinarily extend the statutory protest deadline.

Review the property card now and report clear factual errors. A future assessment protest should address value, classification or incorrect property data—not simply the amount of tax.

Assessment calendar

Madison County assessment and appeal dates
Date or period
What happens
Property-owner action
January 1
Effective date of the current assessment.
Document the property’s condition as of this date.
April 1
Assessment notices are generally mailed.
Compare the notice with the property card.
April 2–25
Informal assessment-review period.
Ask the Assessor to review facts and valuation.
April 2–30
Formal Board of Review protest period.
File the petition even when informal review is still underway if needed.
May 1–adjournment
Local Board of Review meets.
Respond to requests and present evidence.
October 9–31
Equalization-order protest period when applicable.
Use this window only for property affected by a state equalization change.

Build evidence around the actual issue

Incorrect land area
Incorrect building size
Wrong age, grade or condition
Demolished or damaged improvement
Recent arm’s-length purchase
Comparable property sales
Incorrect classification
Agricultural-use or productivity issue
Print the current property card Mark every disputed fact.
Collect direct evidence Use sales, appraisals, measurements, photos, plans, reports or estimates.
Request informal review Contact the Assessor between April 2 and April 25.
Do not miss the overlapping protest deadline Informal review does not automatically preserve the April 30 filing right.
File the Local Board of Review petition Submit it to the Madison County Assessor with the evidence.
Keep filing proof Retain a stamped copy, postal tracking or electronic confirmation.
Review the Board decision A further appeal may be available to Iowa’s Property Assessment Appeal Board.
PAAB timing: When the local Board of Review adjourns by May 31, a regular PAAB appeal is generally due by June 20. Later adjournment generally creates a 20-day appeal period.
Assessment-review script “I am reviewing parcel [number] for assessment year [year]. The property card appears incorrect because [measurement, condition, sale, classification or improvement issue]. What documentation should I provide, and what is the next available review or protest period?”
Open Assessor appeal information Read Iowa protest guidance Call Assessor
Credits and exemptions

Understand Iowa’s 2026 Homestead change and other relief

New Homestead Tax Exemption

Major 2026 law change: Iowa replaced the ordinary Homestead Tax Credit with an exemption equal to 10% of the homestead’s taxable value. The minimum reduction is $5,500 and the maximum is $20,000 in taxable value.

The change applies retroactively to assessment year 2026, which affects property taxes paid in September 2027 and March 2028. Homeowners already receiving the credit or exemption before July 1, 2026 generally do not need to refile while they remain eligible.

Homestead eligibility basics
  • Own the qualifying home
  • Occupy it as a homestead
  • Declare Iowa residency
  • Generally occupy it at least six months per year
  • File the current state application when not already enrolled
Additional age-65 exemption
  • Available to qualifying claimants age 65 by January 1
  • Provides an additional $6,500 taxable-value exemption
  • Continues in later years after approval
  • Contact the Assessor for current filing guidance

Common Madison County property benefits

Property-tax credits and exemptions to review
Program
Main purpose
Typical deadline or action
Homestead Tax Exemption
Reduces taxable value of a qualifying homestead.
Contact the Assessor regarding current or future-year filing after the July 1 deadline.
Age 65+ Homestead Exemption
Provides an additional taxable-value exemption for qualifying older homeowners.
Verify age and current application status with the Assessor.
Military Service Exemption
Reduces taxable value for qualifying veterans.
File the state application with the Assessor by July 1.
Disabled Veteran Homestead Credit
Can cover the full tax levy on a qualifying homestead.
File Form 54-049 and the Homestead form by July 1.
Senior or Disabled Property Tax Credit
Income-tested property-tax relief.
File with the Treasurer by June 1; ask about extension rules.
Agricultural Land Credit
Offsets part of the school-tax burden on qualifying agricultural land.
No owner application is generally required; the Auditor calculates it.
Family Farm Credit
Potential relief for qualifying family-owned agricultural property.
Verify ownership, operation and current filing rules with the Assessor.
Forest and Fruit Tree Reservation
Provides exemption treatment for qualifying reserved land.
Confirm acreage, stocking and annual compliance requirements.
Geothermal exemption
Exempts qualifying added value from a residential geothermal system.
File with the Assessor by February 1 of the first requested assessment year.
Disabled-veteran change: For applications made on or after July 1, 2026, state law limits the qualifying homestead to the dwelling and up to one-half acre and excludes appurtenances. Earlier approved claims follow different property-size treatment.

Application micro-steps

Review the current property card Check which credits or exemptions are already displayed.
Identify the exact program Do not submit every available state form.
Read the current state guidance Iowa changed Homestead and veteran rules in 2026.
Prepare programme-specific evidence Ownership, occupancy, age, military, disability, income or agricultural records may apply.
Submit to the correct county office Many exemptions go to the Assessor, while certain income-tested credits go to the Treasurer.
Verify the future tax statement Confirm that approval appears in the correct assessment and payment cycle.
Review new Homestead exemption Compare Iowa tax benefits Call Assessor for applications Call Auditor for tax-list questions
CAMAvision GIS and parcel mapping

Use the GIS map without treating it as a survey

Map-search steps

Find the property card first Copy the parcel number and owner name.
Open CAMAvision Maps Use the county-linked Madison County GIS viewer.
Select Search Enter the parcel, owner, address or available location information.
Zoom to parcel level Some labels and boundaries are not useful at countywide scale.
Turn on only useful layers Review parcels, roads, aerial imagery and other relevant context.
Compare nearby properties Use surrounding parcel numbers and owners for research.
Use the recorded legal source Obtain the deed, survey, plat or section-corner certificate for legal questions.
GIS is useful for
  • Locating the parcel
  • Identifying neighboring parcels
  • Reviewing roads and aerial context
  • Finding parcel numbers
  • Preparing tax and deed research
Additional verification is needed for
  • Exact property corners
  • Fence placement
  • Easement locations
  • Buildable area
  • Boundary and encroachment disputes
Boundary warning: Do not install a fence, driveway, septic component, building or utility from a GIS parcel line. Obtain the recorded documents and a professional survey when exact ground location matters.
Open official GIS map Return to Assessor property hub
Recorder and Iowa Land Records

Find deeds, mortgages, liens, plats and surveys

Madison County’s land records date to 1838. Public records include deeds, contracts, mortgages, assignments, releases, state and federal tax liens, easements, plats, surveys, section-corner certificates, leases and other instruments.

Search recorded documents step by step

Copy clues from the Assessor record Save the owner, previous owner, parcel number, sale date and legal-description clue.
Create a public Iowa Land Records account Registration is required to access statewide indexing and document images.
Choose Madison County Avoid opening a same-name owner in another Iowa county.
Search both grantor and grantee Try current owners, former owners, trusts, estates and business entities.
Narrow by document type and date Select deed, mortgage, lien, release, easement, plat or survey.
Compare legal-description information Do not rely on a same-name result alone.
Request a copy when necessary Ask whether an ordinary or certified copy is required.

Recorder fees and service details

Madison County Recorder costs
Service
Published fee
Important detail
Standard recording
$7 first page
Each additional page costs $5.
Property-conveyance document
$7 first page plus $5 each additional page
Also includes a $5 Auditor transfer fee for each township section or city block.
Ordinary copy
$0.50 per page
Calculate the number of pages before ordering.
Certified copy
$5 certification plus $0.50 per page
Ask the receiving party whether certification is necessary.
Nonstandard document
$10 additional fee
Applies when Iowa formatting standards are not met.
Return of recorded document
Postage responsibility
Include a self-addressed stamped return envelope.
Turnaround: The Recorder states that most submitted documents are returned in approximately four to five days.

Document-formatting checklist

Three-inch first-page top margin
At least three-quarter-inch remaining margins
White 20-pound paper without visible watermark
Letter or legal-size pages
Single-sided pages
Legible and reproducible text
Dark black or blue signatures
Typed or printed names under signatures
Preparer name, address and phone
Return name and complete address
Taxpayer name and address for transfers
Document title and party names
Legal description
Parcel identification number when required
Address inconsistency: The Recorder contact block lists the office at 201 West Court, while the mailing instructions in the fee section reference 112 North John Wayne Drive. Call 515-462-3771 before mailing a time-sensitive document.
Search Iowa Land Records Read land-record guidance Review formatting standards Call Recorder: 515-462-3771
Property transfer and recording

Prepare a deed or ownership transfer correctly

A property transfer can involve legal-document preparation, transfer declarations, Auditor review, Recorder fees and later updates to the Assessor and Treasurer records.

Prepare the transfer package

Original deed or transfer document
Complete legal description
Parcel identification number
Grantor and grantee names
Taxpayer mailing address
Preparer information
Return address
Required signatures and acknowledgment
Groundwater hazard statement when applicable
Declaration of value when applicable
Recorder and Auditor fees
Self-addressed stamped return envelope

Transfer workflow

Use the current recorded deed as the starting point Do not copy an abbreviated GIS or Assessor description.
Prepare the new legal instrument Use an attorney or qualified real-estate professional when ownership rights are changing.
Complete required state transfer forms Determine whether a declaration of value or groundwater form applies.
Calculate recording and transfer fees Count pages and every township section or city block involved.
Submit the original document Follow the Recorder’s paper, margin, font and signature requirements.
Verify the record later Check Iowa Land Records, the Assessor property card and the tax-mailing information after processing.
Legal-description warning: Do not use a parcel-map screenshot or abbreviated property-card description as the full legal description in a deed.
Recorder transfer script “I am preparing a transfer involving parcel [number] in [township section or city block]. Can you confirm the recording fee, Auditor transfer fee, required state forms, mailing address and whether the legal description requires additional review?”
Development and land-use guidance

Confirm zoning before building, dividing or changing use

Madison County Zoning serves unincorporated areas and handles zoning, subdivisions, signage, building permits, floodplain management, addresses, conditional uses and code enforcement.

Determine the correct jurisdiction

Find the parcel in GIS Confirm its physical location.
Determine whether the parcel is inside a city Winterset, Earlham, St. Charles and other incorporated communities may administer their own zoning.
Use County Zoning for unincorporated property Contact staff before submitting construction or subdivision plans.
Ask about the complete project Discuss use, setbacks, access, floodplain, sanitation, driveway and address requirements.
Apply through the official permit route Use GeoPermits or the county form identified by staff.
Wait for approval before starting A property-card classification or GIS layer is not a permit.

Questions to ask before buying or building

Current zoning district
Permitted use
Minimum lot size
Front, side and rear setbacks
Floodplain status
Road-access and driveway approval
Septic and well requirements
Subdivision or plat review
Conditional-use requirement
Existing violations or permits
Agricultural-use note: Some agricultural uses may receive different zoning treatment, but the existence of agricultural assessment data does not automatically prove that every proposed structure or activity is exempt.
Open County Zoning guidance Call Zoning: 515-462-2636
Delinquency and tax-sale protection

Act before delinquent property reaches the annual June tax sale

Madison County sends delinquency notices for outstanding taxes as of November 1 and May 1. Parcels still delinquent on May 1 may receive publication fees and be advertised for the annual June tax sale.

Find the current tax account Verify the parcel and owner through the tax lookup.
Ask for the complete payoff Include taxes, monthly interest, publication fees and sale-related costs.
Ask whether the parcel is advertised Determine whether tax-sale processing has already begun.
Do not assume a partial payment stops the sale Ask what amount is required to remove or protect the parcel.
Use guaranteed funds when required Tax-sale redemption payments must be made with guaranteed funds.
Keep written proof Save the payoff, receipt and confirmation of account status.
Redemption cost: Iowa tax-sale redemption interest is 2% per month. Contact the Treasurer immediately when a parcel has already been sold.
Urgent delinquency script “I am calling about parcel [number]. Please confirm the total delinquent amount, monthly interest, publication or tax-sale fees, whether the parcel has been advertised or sold, and the payment required to resolve the account.”
Review delinquent-tax rules Call Treasurer immediately
Contact and visit guide

Madison County property office contacts

Phone numbers, locations and office responsibilities
Office
Use it for
Contact
Location and hours
Assessor
Property search, value, property-card data, credits, exemptions and assessment protests.
515-462-4303
coassessor@madisoncounty.iowa.gov
Madison County Annex
201 W. Court Ave., Winterset, IA 50273
Monday–Friday, 8 a.m.–4:30 p.m.
Auditor
Levies, rollback, tax books, agricultural credit, Homestead and military tax-list calculations.
515-462-3914
Fax: 515-705-0348
112 N. John Wayne Drive
Winterset, IA 50273
Monday–Friday, 8 a.m.–4:30 p.m.
Treasurer
Tax bills, balances, payment, partial payment, penalties, statements and tax sale.
515-462-1542
Fax: 515-462-5039
Madison County Annex
201 W. Court, Winterset, IA 50273
Monday–Friday, 8 a.m.–4:30 p.m.
Recorder
Deeds, mortgages, liens, easements, plats, surveys, copies and document recording.
515-462-3771
corecorder@madisoncounty.iowa.gov
201 W. Court, Winterset, IA 50273
Monday–Friday, 8 a.m.–4:30 p.m.
Some services close earlier.
Zoning
Unincorporated zoning, subdivision, permits, floodplain, addresses and code enforcement.
515-462-2636
Fax: 515-462-5002
Annex lower level
201 W. Court, Winterset, IA 50273
Monday–Friday, 8 a.m.–4:30 p.m.

Prepare this before contacting an office

Parcel number
Physical property address
Owner name
Assessment or tax year
Deed or document reference
Credit, exemption or form name
Short description of the problem
Supporting bill, deed, photos or evidence
Universal property call script “I am contacting you about parcel [number] at [address]. I need help with [search, assessment, rollback, payment, exemption, deed, GIS, zoning or transfer]. The public record currently shows [brief fact]. Which office, form or official tool should I use next?”
Accuracy and legal limits

What the online property record cannot prove

Online property tools are useful for
  • Locating a parcel
  • Reviewing assessed values
  • Checking building and land facts
  • Finding sales and tax information
  • Preparing county-office questions
Additional verification is needed for
  • Legal title
  • Exact boundary locations
  • Complete lien research
  • Zoning and permit approval
  • Purchase, lending or legal decisions
Responsible-use warning: Do not identify, accuse or contact someone based only on a same-name result. Verify the parcel number, physical location and recorded documents and use public records lawfully.
Ten practical answers

Madison County property search FAQs

Where can I search Madison County Iowa property records?

Use the Madison County Assessor’s official real-estate search. It provides property cards, ownership, assessed values, land and building details, sales, photos, sketches and links to GIS mapping.

Does the Madison County Auditor determine property values?

No. The Madison County Assessor determines real-property assessments. The Auditor applies state rollback percentages, calculates tax levies, applies qualifying credits and exemptions and prepares the tax books used by the Treasurer.

When are Madison County Iowa property taxes due?

The first installment is due September 1 and becomes delinquent October 1. The second installment is due March 1 of the following year and becomes delinquent April 1.

How can I pay Madison County property taxes online?

Use the official Iowa Treasurers payment service linked by the Madison County Treasurer. Search by owner, property address or parcel number, verify the account, choose a payment method and save the confirmation.

What are Madison County’s online property-tax payment fees?

The Treasurer currently lists a $0.25 fee for an online electronic check and a 2.25% fee for online debit or credit-card payments. Review the displayed fee before submitting payment.

How do I protest a Madison County property assessment?

Property owners may request an informal assessment review from April 2 through April 25 and may file a protest with the local Board of Review from April 2 through April 30. The protest is filed with the Madison County Assessor.

Where can I find Madison County deeds and mortgages?

Use the Madison County Recorder and Iowa Land Records. Madison County land records date to 1838 and include deeds, mortgages, liens, easements, plats, surveys and other recorded documents.

Are Madison County GIS parcel lines legal boundaries?

No. The GIS map is useful for locating and comparing parcels, but it does not replace a recorded deed, plat, section-corner certificate or professional boundary survey.

What happened to Iowa’s Homestead Tax Credit in 2026?

A 2026 Iowa law replaced the ordinary Homestead Tax Credit with an exemption equal to 10% of the homestead’s taxable value, subject to minimum and maximum limits. The change begins with assessment year 2026 and affects taxes paid in September 2027 and March 2028.

Who handles zoning for property outside Madison County cities?

The Madison County Zoning Department handles zoning, subdivision, building-permit, floodplain, addressing and code matters in unincorporated areas. Property inside an incorporated city should be checked with that city’s zoning office.

Official information checked August 7, 2026: Property-search tools, Assessor and Auditor responsibilities, Treasurer payment fees and due dates, 2026 Homestead-law changes, Board of Review dates, GIS access, Recorder coverage and fees, document-formatting rules, zoning contacts and office hours were reviewed using Madison County and Iowa government sources.
Independent guide: CountyAuditors.org is not the Madison County Auditor, Assessor, Treasurer, Recorder, Zoning Department or Iowa Department of Revenue. Confirm live balances, current forms, filing deadlines, eligibility, legal descriptions and boundary information with the responsible public office.
Ohio Auditor Tools · Tax Year 2026

10 Ohio Property Tax Calculators & Auditor Tools

Built specifically for Ohio's 35% assessment ratio, current DTE forms, and 2026 Homestead, Owner-Occupancy, CAUV, Conveyance Fee, and Board of Revision rules. Every number reflects verified Ohio Department of Taxation amounts.

Homestead: $29,000 Enhanced Vet: $58,000 OAGI limit: $41,000 Assessment: 35% of market BOR filing: Free · DTE 1

Annual Tax Bill Estimator

OHIO

Applies Ohio's 35% assessment ratio plus your county's effective millage tier — the actual math your auditor uses.

Pick a county tier and enter your market value.

Homestead Reduction Calculator

DTE 105A

2026 Ohio Homestead: $29,000 general or $58,000 enhanced (100% disabled vet, KIA spouse). OAGI under $41,000 required for non-veteran applicants.

Pick your situation and enter your home value.

Owner-Occupancy & Non-Business Credits

DTE 105C

Every Ohio owner-occupied home qualifies for the 2.5% Owner-Occupancy Credit plus the automatic 10% Non-Business Credit. Most owners don't realize these stack.

Enter your annual tax to see both credit amounts.

Conveyance Fee Calculator

ORC 322

When you sell or transfer Ohio property, the auditor collects $1 state + up to $3 county per $1,000, plus $0.50 per parcel. Counties choose their rate.

Enter sale price and pick your county rate.

CAUV Agricultural Savings

DTE 109

Ohio's Current Agricultural Use Value cuts taxable value dramatically for farmland (10+ acres, or smaller with $2,500+ annual gross income).

Enter both market and CAUV values to see savings.

Mill Rate Converter

Ohio tax rates appear three ways on auditor sites: mills, percent, or dollars per $1,000. Convert between them instantly.

Enter a rate to see all three forms.

Parcel Number Cleaner

Ohio's 88 counties each format parcels differently — Franklin uses 010-123456-00, Cuyahoga uses 001-23-456, Hamilton uses 100-0001-0001-00. Auto-detects.

Paste any Ohio county parcel to format it.

35% Ratio Sanity Check

Ohio law sets taxable value at 35% of market value. If yours is significantly higher, you're a strong BOR appeal candidate.

Enter both values to compare against Ohio's 35% target.

BOR Appeal Savings

DTE 1

A successful Board of Revision complaint typically cuts your value 10–20%. Filing is free and stays in effect until the next reappraisal.

Enter your tax bill and reduction estimate.

BOR Deadline Countdown

MAR 31

Ohio's statutory Board of Revision filing deadline is March 31 for the prior tax year. Miss it and you wait until next year — no extensions.

Set your deadline to start the countdown.

Verify with the official Ohio source

These calculators use the verified 2026 Ohio Department of Taxation amounts and statutory rules. For your exact bill, exemption status, and county-specific deadlines, always confirm with your county auditor and the Ohio Revised Code:

Ohio Dept. of Taxation — Real Property DTE Forms (105A, 105C, 1, 109) ORC 5715 — Board of Revision ORC 5713 — Taxable Real Property ORC 322.02 — Conveyance Fee ORC 319.54(F)(3) — State Fee ORC 5713.30 — CAUV tax.ohio.gov — Main Portal

Estimates use Ohio's 35% statutory assessment ratio and effective tax rate tiers averaged across major Ohio counties. Your actual bill depends on local school levies, voted millage, inside vs. outside millage splits, House Bill 920 reduction factors (HB 920), and special assessments. The 2026 Homestead general amount ($29,000) and enhanced amount ($58,000) reflect HB 187 inflation indexing — your county auditor's office may show slightly different transitional figures. Nothing here is legal or tax advice. CountyAuditors.org is an independent informational directory, not affiliated with any county government.

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