Wisconsin Capital Gains Tax Calculator 2026
Calculate your Wisconsin capital gains tax for 2026 instantly. Enter your sale price, cost basis, holding period, and income to see your federal and Wisconsin state capital gains tax, total owed, and net proceeds — calculated privately in your browser.
Wisconsin Capital Gains Tax Rules
Wisconsin taxes capital gains as ordinary income at its graduated rates, topping out at 7.65% in 2026, but excludes 30% of net long-term gains (60% for qualified Wisconsin farm assets) from state taxable income. That makes the effective top state rate on a long-term gain about 5.36%. This state tax is separate from — and in addition to — the federal capital gains tax you owe to the IRS.
Understanding Wisconsin'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 Wisconsin state capital gains tax based on your sale price, cost basis, holding period, and income.
Federal vs Wisconsin Capital Gains Tax
The federal capital gains tax rate depends on your taxable income and how long you held the asset. For long-term gains (held more than 12 months), the 2026 federal thresholds set by IRS Rev. Proc. 2025-32 are 0% up to $49,450 single / $98,900 married filing jointly, 15% up to $545,500 single / $613,700 MFJ, and 20% above those. (The 2025 figures were $48,350 / $96,700 and $533,400 / $600,050 — check which tax year you are filing for.) Short-term gains are taxed as ordinary income at your marginal federal rate.
Wisconsin's tax is applied on top of the federal rate, but on a smaller base because of the 30% long-term exclusion. A Wisconsin resident in the 15% federal bracket realising a long-term gain owes 15% federal plus 7.65% on 70% of the gain — a combined effective rate of about 20.36%, not 22.65%. Short-term gains get no exclusion, so there the full 7.65% stacks and the combined rate can reach your ordinary federal bracket plus 7.65%. This stacking effect makes holding-period planning worth real money on large transactions.
Wisconsin Capital Gains Tax Calculator: 30% Long-Term Exclusion Explained (2026)
Wisconsin is one of only a handful of states offering a specific long-term capital gains exclusion — the state excludes 30% of net long-term capital gains from Wisconsin taxable income (60% for gains from qualified Wisconsin farm assets) per the Wisconsin DOR Publication 103, Reporting Capital Gains and Losses. Practical impact: a $50,000 long-term gain is taxed on only $35,000 at the 7.65% top rate — Wisconsin state tax of about $2,678 instead of $3,825. To qualify, the asset must be held longer than one year and reported as long-term on federal Schedule D. Short-term gains get no exclusion and are taxed as ordinary income at Wisconsin's graduated 3.5%-7.65% rates. For a Wisconsin homeowner selling a primary residence, the federal $250,000/$500,000 home-sale exclusion applies first, then the 30% Wisconsin exclusion applies to any remaining gain. Combined effect: a couple with a $600,000 home-sale gain excludes $500,000 federally, then excludes 30% of the remaining $100,000 for Wisconsin — paying state tax on only $70,000 (~$5,355). Updated 2026-07-06.
Short-Term Gains Get No Wisconsin Exclusion
The 30% exclusion is the headline Wisconsin benefit, and it is easy to assume it applies to any investment profit. It does not. The exclusion is available only on assets held for more than one year; sell at eleven months and you lose it entirely, so 100% of the gain is taxed as ordinary income at Wisconsin rates rather than 70% of it. On a $100,000 gain at the top 7.65% bracket that is the difference between $5,355 and $7,650 of state tax — a $2,295 penalty for selling a few weeks early. The federal treatment moves in the same direction at the same moment, since short-term gains are taxed as ordinary income federally instead of at the preferential long-term rates, so the two penalties compound.
The practical consequence is that the holding-period date is worth checking before you sell, not after. Count from the day after acquisition to the disposal date, and note that "more than one year" means a full year plus a day — exactly twelve months does not qualify. Where a position is close to the line, the combined federal and Wisconsin saving from waiting is usually far larger than the market risk of holding a few more weeks, though that is a judgement only you can make. The calculator above applies the exclusion only when your holding period exceeds twelve months, so you can enter both scenarios and compare the two totals directly. One assumption worth knowing: the state figure above applies Wisconsin's top 7.65% bracket, so it is a conservative upper bound. Wisconsin taxes gains as ordinary income on a graduated scale starting at 3.50%, so a filer whose total income sits in a lower bracket will owe less state tax than shown. Wisconsin's treatment of capital gains is set out by the Wisconsin Department of Revenue. Last reviewed 21 August 2026.
Wisconsin Cap Gains Strategies & Exemptions
Several strategies can help Wisconsin 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 Wisconsin state tax.
For Wisconsin 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 federal exclusion is applied first; Wisconsin's 30% long-term exclusion then applies to whatever gain is left over — so consult a Wisconsin 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.
Wisconsin Capital Gains Tax Calculator: The Qualified Wisconsin Business Deferral and 100% Exclusion
Beyond the 30% long-term exclusion, Wisconsin offers a second lever that generic capital gains calculators never model, and it can wipe out the state tax entirely. Under Wis. Stat. § 71.05(25), if you reinvest a long-term capital gain into a qualified Wisconsin business within 180 days of the sale, you may defer the Wisconsin tax on that gain — you still owe federal tax, but the state portion is pushed out. Under § 71.05(26), if you then hold that qualifying investment for at least five uninterrupted years, the gain on the new investment itself is 100% exempt from Wisconsin income tax. To qualify, the business must be registered with the Department of Revenue for the year of investment and meet the in-state payroll and property tests; the deferral is claimed on Schedule CG and the exclusion on Schedule QI. Worked example: on a $200,000 long-term gain, the 30% exclusion alone leaves $140,000 taxable at 7.65%, or $10,710 of Wisconsin tax. Roll the full gain into a qualified Wisconsin business inside 180 days and that $10,710 is deferred instead of due at filing — and if the replacement investment later appreciates, that second layer of gain escapes Wisconsin tax completely after five years. The rules are strict on timing and registration, so confirm eligibility against Wisconsin DOR Publication 103 and a Wisconsin tax professional before you sell — the 180-day clock starts at the sale, not at filing. Updated 2026-08-11.
The Real Top Rate: Adding the 3.8% Net Investment Income Tax
Most Wisconsin capital gains guides stop at "20% federal + 7.65% state" and miss the third layer. The Net Investment Income Tax (NIIT) adds 3.8% on investment income once your modified adjusted gross income passes $200,000 (single) or $250,000 (married filing jointly) — and unlike the ordinary brackets, those NIIT thresholds are not indexed for inflation, so more sellers cross them every year. A large one-off gain is exactly what pushes you over.
Stacked properly, the worst-case Wisconsin long-term rate in 2026 is: 20% federal + 3.8% NIIT + (7.65% × 70% after the state exclusion, roughly 5.36%) = about 29.16%. On a $500,000 long-term gain that is roughly $145,800 in combined tax. Two consequences worth planning around. First, because NIIT keys off MAGI rather than the gain alone, splitting a sale across two tax years, or using an installment sale, can keep you under the threshold in at least one year. Second, the NIIT applies to the federal gain figure — Wisconsin's 30% exclusion reduces your state bill but does nothing to reduce NIIT. Thresholds and the definition of net investment income are set out in the IRS Topic No. 559, Net Investment Income Tax. Updated 2026-08-02.
Frequently Asked Questions
What is the Wisconsin capital gains tax rate in 2026?
Wisconsin has no separate capital gains rate — gains are taxed as ordinary income at the state's graduated rates, which top out at 7.65% in 2026. But Wisconsin excludes 30% of net long-term capital gains from state taxable income (60% for qualified Wisconsin farm assets), so the effective top state rate on a long-term gain is about 5.36%. Short-term gains get no exclusion and are taxed at the full graduated rate.
Does Wisconsin tax short-term vs long-term capital gains differently?
Yes. Both are taxed at Wisconsin's ordinary graduated income tax rates (3.50% to 7.65%), but only long-term gains — assets held more than one year and reported as long-term on federal Schedule D — qualify for the 30% state exclusion. On a $50,000 gain that is the difference between Wisconsin taxing $35,000 and taxing the full $50,000, roughly $1,148 in tax. Crossing the one-year holding mark therefore cuts your Wisconsin bill by almost a third, on top of the much larger federal long-term rate saving.
Are there Wisconsin capital gains exemptions?
The main one is the 30% exclusion on net long-term capital gains, claimed on Wisconsin Form 1 Schedule WD. Qualified Wisconsin farm assets get 60% instead. Separately, the federal home-sale exclusion of $250,000 single / $500,000 married filing jointly applies first when you sell a primary residence, and Wisconsin's 30% exclusion then applies to whatever gain remains. Gains inside a 401(k), IRA or HSA are not taxed by Wisconsin at all until withdrawal. Consult a tax professional for your specific situation.
How does Wisconsin capital gains compare to federal rates?
Federal capital gains tax rates (0%, 15%, 20%) are set by the IRS and apply in addition to any Wisconsin state tax. Long-term gains (assets held over 12 months) receive lower federal rates. Wisconsin's state rate of 7.65% stacks on top of the federal rate.
Do I owe Wisconsin 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 Wisconsin resident at the time of sale, Wisconsin capital gains rules apply. Always consult a tax advisor when changing states.
How does the 30% Wisconsin long-term exclusion work?
Wisconsin excludes 30% of net long-term capital gains from state taxable income (60% for qualified Wisconsin farm assets). Practical impact: on a $50,000 long-term gain, only $35,000 is taxed at the top 7.65% rate — Wisconsin state tax of about $2,678 instead of $3,825. Short-term gains (assets held one year or less) get no exclusion. The exclusion is claimed on Wisconsin Form 1 Schedule WD.
Do Wisconsin farm asset sales get a bigger exclusion?
Yes — long-term gains from the sale of qualified Wisconsin farm assets receive a 60% state exclusion (vs 30% for standard long-term gains). Qualified farm assets include Wisconsin farmland actively used for farming and small business stock in a family farm corporation. The seller must have materially participated in the farming operation for 5+ years. This is one of the most generous farm-succession tax breaks in the US Midwest.
What is the highest combined capital gains tax rate in Wisconsin?
About 29.16% on a long-term gain in 2026: 20% federal, plus the 3.8% Net Investment Income Tax, plus roughly 5.36% state (7.65% applied to the 70% of the gain that Wisconsin does not exclude). On a $500,000 long-term gain that is around $145,800 of combined tax. The NIIT thresholds of $200,000 single / $250,000 married filing jointly are not indexed for inflation, so a single large sale often triggers it even if your normal income sits well below.
Does Wisconsin's 30% exclusion reduce the 3.8% NIIT?
No. The Net Investment Income Tax is a federal tax calculated on your federal net investment income, so Wisconsin's 30% long-term exclusion does not shrink the NIIT base. It reduces only your Wisconsin state bill. To reduce NIIT you have to reduce modified adjusted gross income itself — for example by spreading a sale across tax years, using an installment sale, or harvesting capital losses in the same year as the gain.
Can I defer Wisconsin capital gains tax by reinvesting in a Wisconsin business?
Yes. Under Wis. Stat. § 71.05(25) you can defer the Wisconsin tax on a long-term capital gain by reinvesting it in a qualified Wisconsin business within 180 days of the sale. The federal tax is still due — only the state portion is deferred. The business must be registered with the Wisconsin Department of Revenue for that year and meet the in-state payroll and property tests, and you claim the deferral on Schedule CG. The 180-day clock runs from the sale date, not from your filing date, so the decision has to be made before you file.
Does this calculator include the 3.8% Net Investment Income Tax?
Yes. The NIIT is applied to the lesser of your gain and the amount by which your modified adjusted gross income exceeds $200,000 for single and head of household filers or $250,000 for married filing jointly. The result shows it as its own line, and displays $0.00 when your MAGI is below the threshold. Because the calculator adds the gain to the income you enter, a single large sale can push you over the threshold even when your usual income is well below it — which is exactly how the NIIT catches most people.
Why does the state tax line change when I change the holding period?
Because Wisconsin's 30% exclusion applies only to assets held more than one year. Enter twelve months or fewer and the calculator taxes the full gain, labelling the line "no exclusion — short-term"; enter more than twelve months and it taxes 70% of the gain instead. On a $100,000 gain at the top bracket that is $7,650 versus $5,355. The state figure uses Wisconsin's top 7.65% rate, so it is an upper bound for filers in lower brackets.
How does the Wisconsin 100% capital gains exclusion for qualified businesses work?
Under Wis. Stat. § 71.05(26), if you hold an investment in a qualified Wisconsin business for at least five uninterrupted years, the gain on that investment is 100% exempt from Wisconsin income tax — not just 30% excluded. It is claimed on Schedule QI. This pairs with the § 71.05(25) deferral: roll an existing gain into a qualified Wisconsin business, defer the state tax on the original gain, then hold five years and pay no Wisconsin tax on the new gain at all. See Wisconsin DOR Publication 103 for the eligibility tests before relying on it.