Iowa Capital Gains Tax Calculator 2026
Calculate your Iowa capital gains tax for 2026 instantly. Enter your sale price, cost basis, holding period, and income to see your federal and Iowa state capital gains tax, total owed, and net proceeds — calculated privately in your browser.
Iowa Capital Gains Tax Rules
Iowa has no separate capital gains rate. Short-term and long-term gains are both taxed as ordinary income: they are part of federal taxable income, which Iowa taxes at a flat 3.8% in 2026. This state tax is separate from — and in addition to — the federal capital gains tax you owe to the IRS.
Understanding Iowa's capital gains rules is essential for investors, homeowners selling property, and business owners who plan to sell assets. The calculator above computes your estimated federal and Iowa state capital gains tax based on your sale price, cost basis, holding period, and income. It subtracts the 2026 federal standard deduction ($16,100 single, $32,200 married filing jointly, $24,150 head of household) from the income you enter, stacks the gain on top of your other income, and taxes each slice at its own rate.
Federal vs Iowa Capital Gains Tax
The federal tax on a gain depends on your taxable income and on how long you held the asset. For long-term gains (held more than 12 months), the 2026 federal rates set by IRS Rev. Proc. 2025-32 are 0% on taxable income up to $49,450 single / $98,900 married filing jointly / $66,200 head of household, 15% up to $545,500 single / $613,700 joint / $579,600 head of household, and 20% above those thresholds. The gain is stacked on top of your other income, so one sale can be taxed partly at 0%, partly at 15% and partly at 20%. Short-term gains are taxed as ordinary income at the 2026 federal brackets of 10% to 37%. A 3.8% Net Investment Income Tax is added on the lesser of the gain or the amount by which your modified adjusted gross income exceeds $200,000 (single or head of household) or $250,000 (married filing jointly).
Worked example (2026): a single filer with $90,000 of other income sells stock held for two years at a $50,000 gain. Federal tax is $7,500 (the whole gain falls in the 15% band) and Iowa tax is $1,900, a combined $9,400 or 18.8% of the gain. Sold after 11 months instead, the same gain is short-term: $11,364 federal plus $1,900 Iowa tax, $13,264 in total. The calculator above reproduces both results.
Iowa Cap Gains Strategies & Exemptions
Several strategies can help Iowa taxpayers reduce their capital gains tax burden. First, hold assets for more than 12 months to qualify for the lower long-term federal rate. Second, harvest capital losses to offset gains — if you have losing positions, selling them in the same tax year can reduce your net taxable gain. Third, use tax-advantaged accounts (401k, IRA, HSA) to shelter future investment growth from both federal and Iowa state tax.
For Iowa homeowners, the federal home-sale exclusion allows you to exclude up to $250,000 (single) or $500,000 (married filing jointly) of gain from the sale of a primary residence, provided you meet the 2-of-5-year ownership and use tests. The calculator does not apply this exclusion, so enter only the gain that remains after it. Consult an Iowa tax professional to understand which exclusions apply to your specific situation.
Always work with a qualified tax professional before executing large asset sales. Tax laws change, and individual circumstances — such as installment sales, like-kind exchanges (1031 exchanges for real estate), or business asset sales — can significantly affect your total tax liability.
Iowa Retired Farmer Capital Gains Exclusion — 100% State-Tax Wipe on Qualifying Farmland
Iowa offers one of the most powerful state-level cap gains breaks in the country for retiring farmers, which the calculator above does not model. Per the official Iowa Department of Revenue Retired Farmer Capital Gain Exclusion guidance, an Iowa resident aged 55 or older who has "materially participated" in an Iowa farming business for at least 10 years may exclude 100% of the state capital gain on the sale of qualifying farmland, livestock, or breeding animals. That wipes out the 3.8% Iowa portion entirely. Federal cap gains still applies (15-20% on long-term gains at the federal level) — but on a $1M farmland gain that is $38,000 in Iowa state tax saved. Key requirements: (1) aged 55 or older, or disabled, and no longer materially participating in a farming business, (2) at least 10 years of material participation in the aggregate, with real property held for at least 10 years, (3) the exclusion is claimed through a single, lifetime election on Form IA 100G. The election covers real property used in a farming business and cattle, horses and other breeding livestock; farm machinery is not listed on the form. Non-farming Iowa residents selling stocks, urban real estate, or investment property do NOT qualify — this exclusion is farmland-specific.
Last updated: October 2026. Federal figures: IRS Rev. Proc. 2025-32 (2026 capital gains thresholds, brackets and standard deduction), IRS Topic 409 and IRS Topic 559 (Net Investment Income Tax). Iowa: Iowa income tax calculator (same 2026 state rules).
Frequently Asked Questions
What is the Iowa capital gains tax rate in 2026?
Iowa has no separate capital gains rate. In 2026 a gain is taxed as ordinary income at Iowa's flat 3.8% rate, so the state tax depends on your total income.
Does Iowa tax short-term vs long-term capital gains differently?
No. Iowa taxes short-term and long-term capital gains the same way, as ordinary income. Only the federal tax depends on the holding period: gains on assets held more than 12 months get the 0%, 15% or 20% long-term rates, while short-term gains are taxed at ordinary federal rates of 10% to 37%.
Are there Iowa capital gains exemptions?
Iowa has no general exclusion for capital gains — a gain is taxed as ordinary income. The main exception is for retired farmers, who can make a single lifetime election to exclude gains on real property used in farming and on cattle, horses and breeding livestock (Form IA 100G). At the federal level you can exclude up to $250,000 of gain ($500,000 if married filing jointly) on the sale of your main home if you meet the ownership and use tests.
How does Iowa capital gains compare to federal rates?
Federal long-term capital gains rates for 2026 are 0%, 15% and 20%: the 15% rate starts above $49,450 of taxable income for single filers ($98,900 married filing jointly) and the 20% rate above $545,500 ($613,700). Iowa state tax is charged in addition to the federal tax. For example, a single filer with $90,000 of other income and a $50,000 long-term gain owes $7,500 federal and $1,900 to Iowa.
Do I owe Iowa capital gains tax if I move before selling?
If you move before selling an asset, your state tax obligation depends on where you were a resident when the sale occurs. If you are a Iowa resident at the time of sale, Iowa capital gains rules apply. Always consult a tax advisor when changing states.
Am I eligible for the Iowa retired farmer capital gains exclusion?
You may be if you are a retired farmer: an individual who is disabled or aged 55 or older and who no longer materially participates in a farming business. You must have materially participated in a farming business for at least 10 years in the aggregate and, for real property, have held it for at least 10 years. The exclusion is claimed through a single, lifetime election on Form IA 100G and covers gains on real property used in a farming business and on cattle, horses and other breeding livestock — it removes Iowa's 3.8% tax on those gains. Federal long-term capital gains tax still applies.
Does the Iowa retired farmer exclusion cover machinery and equipment sales?
Do not assume so. Form IA 100G, the retired farmer election, lists capital gains from real property used in a farming business and from cattle, horses and other breeding livestock; farm machinery and equipment are not listed. Confirm the treatment of any equipment sale with the Iowa Department of Revenue or an Iowa tax professional before you rely on the exclusion.