Updated October 8, 2026. Quick answer: Generally no, if you qualify for the federal exclusion. The Iowa Department of Revenue says “the starting point for taxation is federal taxable income.” Gain above the exclusion is taxed at a flat rate: “Iowa now has a flat tax rate of 3.8%.” The person who conveys the property also owes the state transfer tax.
Iowa tax on home sale profit at a glance
| Item | What the documents say |
|---|---|
| Profit on your main home | Starts from federal taxable income with rolling conformity to the Internal Revenue Code; the pages read do not mention section 121 |
| Rate on gain above the exclusion | Flat 3.8% |
| Collected at the sale | State transfer tax of eighty cents for each five hundred dollars of value, owed by the person who conveys the property; no income tax withholding shown for a resident seller |
| Source | Iowa Department of Revenue; Iowa Legislature |
What the Iowa documents say
The 2025 expanded instructions say that for tax years beginning on or after January 1, 2023, “the starting point for taxation is federal taxable income.” Iowa has adopted rolling conformity, meaning “the state will automatically conform with any changes made” to the Internal Revenue Code, except as Iowa law specifies. Under the federal statute, “Gross income shall not include gain from the sale or exchange” of a principal residence that meets the ownership and use tests, so an excluded gain never enters federal adjusted gross income. That is reasoning from two documents. The Iowa pages read never name section 121.
On the rate, the instructions say “Iowa now has a flat tax rate of 3.8%.” The Department’s October 2025 announcement of 2026 rates says “Iowa law provides for a flat tax rate of 3.8 percent”, so the rate is unchanged for 2026.
What the federal exclusion requires
Most state answers start here. The statute says “Gross income shall not include gain from the sale or exchange” of property that, during the five years before the sale, you owned and used as your principal residence for periods adding up to two years or more. The limit is “shall not exceed $250,000”, or $500,000 for a husband and wife who make a joint return and meet the statute’s conditions. See CMG’s home sale taxes page and exclusion calculator.
A worked example at a $400,000 gain
An illustration, not a return: a married couple in Iowa sells their main home with a gain of $400,000 and meets the federal ownership and use tests. The gain is below the $500,000 joint exclusion, so it is not in federal adjusted gross income and, on the documents read, $0 is taxed by Iowa. As a second illustration, computed below, suppose the gain were $600,000. The amount above the exclusion would then be $100,000 and, computed as that excess times 3.8%, the tax at the flat rate would be $3,800, before any other adjustment.
What is collected at the sale
Iowa Code chapter 428A imposes a real estate transfer tax: “the tax is eighty cents for each five hundred dollars” of value. On who owes it, the chapter says the person who conveys the property “shall be liable for such tax”. The chapter’s list of exemptions was not found to include a principal residence. The documents read show no income tax withholding on a resident’s sale.
What changes in 2026
Iowa: the Department of Revenue’s October 2025 announcement says the flat rate is 3.8 percent for 2026, the same as 2025.
What the documents do not say
- The pages read never name section 121, so conformity is reasoned from the federal starting point and the conformity statement. County or local taxes were not read. The instructions are for tax year 2025; the 2026 rate comes from the Department’s announcement.
Common mistakes
- Treating the transfer tax as a tax on your profit; it is computed on the value, not on gain.
- Applying the flat rate to the whole gain; the rate applies to what remains after the federal exclusion.
- Assuming the answer for one state applies to another, or that the state answer changes the federal tax on the sale.
Related: home sale taxes, state tax on home sale profit, how Iowa taxes capital gains, Iowa retirement taxes, and home sale exclusion calculator.
Find the right next step for your situation
About how much do you have invested? Pick the range that fits; your next step appears immediately below.
Compare vetted advisors for home sale proceeds
If your portfolio is $250,000 or more, this connects you (free, with no obligation to hire anyone) with 2 to 3 vetted advisors.
Before you start, what actually happens. The matching service is run by WiserAdvisor, an independent advisor-matching company. It opens on their site, asks for your ZIP code and a few questions, and matches you with 2 to 3 vetted advisors. It is free to you.
WiserAdvisor states the service is built for portfolios of $250,000 and above. By submitting, you consent to emails, phone calls and text messages from WiserAdvisor and up to three advisors, so expect to be contacted. Clear Money Guide may earn a referral payment for a qualifying completed form, whether or not you ever hire anyone.
Opens on WiserAdvisor’s site in a new tab.
See how an advisor plans your sale proceeds
Price the destination before you decide. The matching service below introduces you to advisers who pay to meet you.
Before you start, what actually happens. The form is run by Kapitalwise, our advisor-matching partner. Kapitalwise sends your details to advisers who pay for the introduction, so expect calls and texts. Clear Money Guide may earn a referral payment through this service, whether or not you ever hire anyone. This is free to you and there is no obligation to hire anyone.
The Kapitalwise form opens here; you stay on this page.
What happens when you press the button
It asks about nine questions: age, investable assets, location; then your name, email and phone number, and verifies the phone by text. Nothing loads and nothing reaches Kapitalwise until you press the button.
Prefer flat-fee or hourly pricing instead? Compare ranges here.
Answer againSources
- 2025 Expanded Instructions (IA 1040): https://revenue.iowa.gov/media/4435/download?inline=
- IA 1040 Schedule 1 (expanded instructions page, instruction year 2025): https://revenue.iowa.gov/taxes/tax-guidance/individual-income-tax/1040-expanded-instructions/ia-1040-schedule-1
- Iowa Code Chapter 428A, Real Estate Transfer Tax: https://www.legis.iowa.gov/docs/ico/chapter/428A.pdf
- IDR announces 2026 individual income tax and interest rates (press release, 2025-10-21): https://revenue.iowa.gov/press-release/2025-10-21/idr-announces-2026-individual-income-tax-and-interest-rates
- IDR Issues New Income Withholding Tax Tables for 2026 (press release, 2025-11-03): https://revenue.iowa.gov/press-release/2025-11-03/idr-issues-new-income-withholding-tax-tables-2026
- 26 U.S.C. 121, Exclusion of gain from sale of principal residence (U.S. Code, GovInfo): https://www.govinfo.gov/content/pkg/USCODE-2023-title26/html/USCODE-2023-title26-subtitleA-chap1-subchapB-partIII-sec121.htm
Sources: the primary documents linked above, read on October 8, 2026. General information, not tax advice. Your own facts decide the outcome, and a tax professional or the state agency itself is the right place to confirm anything consequential.