The Wisconsin capital gains tax isn’t a separate tax — gains are folded into your ordinary income and taxed at rates from 3.50% to 7.65% for 2025. What softens the bill is an exclusion: 30% of most long-term capital gains come off the top before Wisconsin calculates what you owe, and 60% comes off for gains on farm assets. Short-term gains get no exclusion.
How Wisconsin Taxes Capital Gains
Wisconsin follows federal definitions for what counts as a capital gain: profit from selling stocks, bonds, mutual funds, real estate, business interests, cryptocurrency, and collectibles.1Wisconsin Department of Revenue. Pub 103 Reporting Capital Gains and Losses for Wisconsin by Individuals, Estates, and Trusts If you held the asset more than one year, it’s long-term and qualifies for the exclusion. One year or less, it’s short-term and the full gain is taxed.
The 2025 Wisconsin brackets (for returns filed in 2026) are:2State of Wisconsin Department Of Revenue. Tax Rates
- 3.50% on taxable income up to $14,680 single / $19,580 married filing jointly
- 4.40% from there to $50,480 single / $67,300 joint
- 5.30% up to $323,290 single / $431,060 joint
- 7.65% on anything above those thresholds
The 30% long-term exclusion works like this. Say you sell stock you’ve held two years for a $10,000 gain. Wisconsin subtracts $3,000 before taxing the rest, so only $7,000 lands on your return. At the top 7.65% rate that’s $535.50 in Wisconsin tax instead of $765 — an effective top rate of about 5.36% on long-term gains.1Wisconsin Department of Revenue. Pub 103 Reporting Capital Gains and Losses for Wisconsin by Individuals, Estates, and Trusts
Flip that stock in six months instead, and the full $10,000 stacks on top of your wages at whatever bracket that pushes you into. Because gains pile onto your other income, the timing of a sale matters. Selling a large asset in a year when your other income is lower can keep more of the gain in a lower bracket. Wisconsin offers no preferential rate for investment income the way the federal system does, so bracket management is one of the few levers you have.
The 60% Farm Asset Exclusion
Farmers get a much bigger break. Wisconsin excludes 60% of long-term capital gains on farm assets, so only 40% of the gain is taxed. On a $100,000 gain from selling farmland held more than a year, Wisconsin taxes just $40,000.1Wisconsin Department of Revenue. Pub 103 Reporting Capital Gains and Losses for Wisconsin by Individuals, Estates, and Trusts
The statute defines farm assets as livestock, farm equipment, farm real property, and farm depreciable property.3Wisconsin State Legislature. Wisconsin Statutes 71.05(6)(b)9 The asset still has to clear the one-year holding requirement to qualify.
Ways to Reduce or Defer the Tax
Beyond the automatic exclusion, several provisions can cut or postpone the bill on specific transactions.
Selling Your Home
Wisconsin follows the federal home sale exclusion. If you sell your primary residence, up to $250,000 of gain is excluded ($500,000 for joint filers), provided you owned and lived in the home for at least two of the five years before the sale.4Internal Revenue Service. Topic no. 701, Sale of Your Home The excluded portion disappears from both your federal and Wisconsin returns. Rental properties, vacation homes, and investment properties don’t qualify.
Qualified Small Business Stock
The federal Section 1202 exclusion for qualified small business stock applies in Wisconsin for stock sold after December 31, 2018. Depending on when you acquired the stock, 50%, 75%, or 100% of the gain can be excluded. The stock has to have been issued by a C corporation, acquired at original issuance, and held at least five years.1Wisconsin Department of Revenue. Pub 103 Reporting Capital Gains and Losses for Wisconsin by Individuals, Estates, and Trusts
Qualified Wisconsin Business
Wisconsin has its own exclusion for gains on investments in a qualified Wisconsin business. You must have made the investment after December 31, 2010, and held it for at least five uninterrupted years. The business must have been certified by the Wisconsin Economic Development Corporation (WEDC) or registered with the Wisconsin Department of Revenue, and it must have been a qualified Wisconsin business in the year you invested and for at least two of the four years after.5Department of Revenue. Qualified Wisconsin Business Capital Gain Exclusion
The investment can be stock or an ownership interest in a partnership, corporation, S corporation, or LLC. You claim the exclusion on Schedule QI, with the eligible amount flowing to Schedule WD. The common trap: buying stock in a Wisconsin company that was never certified by WEDC or registered with the DOR does not qualify, no matter how long you held it.
Like-Kind Exchanges
Wisconsin conforms to federal Section 1031. Swap one investment real property for another of like kind through a properly structured exchange and you defer both federal and Wisconsin tax. Since the 2017 federal tax law, the deferral is limited to real property; equipment and other personal property no longer qualify.
Opportunity Zone Investments
Wisconsin adopted the federal Qualified Opportunity Zone rules. Rolling capital gains into a qualified opportunity fund defers Wisconsin tax on those gains the same way it defers federal tax.6Wisconsin Department of Revenue. Investment in a Wisconsin Qualified Opportunity Fund Fact Sheet The deferral applies regardless of where the opportunity zone is located, so a fund investing in zones outside Wisconsin still works for state purposes.
Inherited Property and the Double Step-Up
Inherited assets usually get a stepped-up basis to fair market value on the date of the previous owner’s death. If your parent paid $10,000 for stock worth $80,000 when they died, your basis is $80,000. Sell it for $82,000 and the taxable gain is only $2,000.
Wisconsin generally follows this federal rule but uses the value that would be includable for Wisconsin death tax purposes. For deaths after 1991 that rarely produces a different number in practice, but for certain older estates or when an alternate valuation date was used federally, the Wisconsin basis may not match the federal basis exactly.1Wisconsin Department of Revenue. Pub 103 Reporting Capital Gains and Losses for Wisconsin by Individuals, Estates, and Trusts
Because Wisconsin is a marital (community) property state, married couples get something that residents of common-law states don’t: a double step-up. Normally only the deceased spouse’s half of jointly held property is stepped up. In Wisconsin, both halves reset to fair market value when one spouse dies. A couple holding stock worth $200,000 that they bought for $50,000 sees the surviving spouse’s basis reset to $200,000 across the entire holding, wiping out the built-in gain.
Retirement accounts are the exception. 401(k)s and IRAs don’t get a stepped-up basis because the money inside is pre-tax deferred income, taxed when withdrawn regardless of when the original owner died.
Capital Losses
When you sell at a loss, the loss offsets capital gains dollar for dollar. If losses exceed gains for the year, Wisconsin lets you deduct up to $3,000 of the net loss against ordinary income ($1,500 if married filing separately).7Wisconsin State Legislature. Wisconsin Statutes 71.05 – Income Computation Anything beyond that carries forward indefinitely, offsetting future years’ gains first and then up to $3,000 of ordinary income each year.
Don’t overestimate what a big loss does for you in a single year. A $50,000 capital loss with no offsetting gains saves at most $229.50 in Wisconsin tax that year (7.65% of $3,000). The rest waits in carryover, and depleting it can take years if you don’t generate gains.
If You Don’t Live in Wisconsin
Non-residents who sell Wisconsin real estate owe Wisconsin tax on the gain, including on installment payments received after moving out of state.8Wisconsin State Legislature. Wisconsin Administrative Code Tax 2.955(3)(a) Any non-resident with Wisconsin gross income of $2,000 or more must file Form 1NPR, and the gain from Wisconsin real property counts toward that threshold.
Gains on intangibles like stocks are different. Those are generally taxable only in your state of residence when the gain is realized, not in Wisconsin, even if the stock was in a Wisconsin company.
Filing, Estimated Payments, and Penalties
Residents report capital gains on Form 1 with Schedule WD, which is where the 30% or 60% exclusion is applied. If your only capital gain is a mutual fund or REIT distribution, you can skip Schedule WD and report the distribution directly.9Wisconsin Department of Revenue. 2025 Wisconsin Schedule WD Instructions
The 2025 return is due April 15, 2026. Wisconsin grants a 180-day extension matching the federal extension, but that extends only the filing deadline, not the payment deadline. Interest accrues at 1% per month on any unpaid balance after April 15, even during an approved extension.10State of Wisconsin Department Of Revenue. Individual Income Tax Deadlines and Late-Filed Returns
If you expect to owe $500 or more beyond what’s withheld, you need to make estimated payments. For 2026 the installments are due April 15, June 15, September 15, and January 15, 2027.11State of Wisconsin Department Of Revenue. Individual Income Tax – Estimated Tax Payments This is where people get caught after a large sale: nothing is withheld on a capital gain, so you need to send Wisconsin a payment the quarter the sale happens or face an underpayment interest charge of 12% per year on the shortfall.12Wisconsin State Legislature. Wisconsin Statutes 71.84 – Addition to the Tax
Filing late is more expensive still. The late filing penalty is 5% of unpaid tax per month, capped at 25%.13Wisconsin State Legislature. Wisconsin Statutes 71.83 – Additions to and Penalties for Tax Interest on unpaid tax runs at 12% annually from the original due date. These stack on top of each other, so a $10,000 balance left unpaid for five months after April 15 can accumulate $2,500 in late filing penalty before interest is added.