Wisconsin has a more complex capital gains tax structure than many states because it combines ordinary income tax treatment with a partial exclusion for certain long-term capital gains. In 2025, Wisconsin continues to tax most capital gains as regular income under its progressive tax brackets, but many long-term gains benefit from a 30% state exclusion, lowering the effective tax rate. Some gains from Wisconsin-based businesses even receive a 60% exclusion. This guide explains how Wisconsin taxes capital gains in 2025, how federal rules apply, and strategic ways to reduce your tax burden.
What Are Capital Gains?
Capital gains are profits realized when you sell an asset—such as stocks, real estate, cryptocurrency, or business interests—for more than your original cost.
Only realized gains are taxed. Unrealized gains (value increases before selling) are not taxed.
Short-Term vs. Long-Term Capital Gains
For federal tax purposes:
- Short-term capital gains: Assets held one year or less, taxed at ordinary income rates.
- Long-term capital gains: Assets held more than one year, taxed at reduced federal long-term capital gains rates.
Wisconsin uses these definitions only for determining eligibility for the 30% or 60% exclusion, not for applying different tax rates.
Federal Capital Gains Tax (2025)
Short-Term Capital Gains
Short-term gains are taxed according to the 2025 federal income brackets:
| Taxable Income (Single) | Taxable Income (Married Joint) | Rate |
|---|---|---|
| $0–$11,925 | $0–$23,850 | 10% |
| $11,925–$48,475 | $23,850–$96,950 | 12% |
| $48,475–$103,350 | $96,950–$206,700 | 22% |
| $103,350–$197,300 | $206,700–$394,600 | 24% |
| $197,300–$250,525 | $394,600–$501,050 | 32% |
| $250,525–$626,350 | $501,050–$751,600 | 35% |
| $626,350+ | $751,600+ | 37% |
Long-Term Capital Gains
| Taxable Income (Single) | Taxable Income (Married Joint) | Rate |
|---|---|---|
| $0–$48,350 | $0–$96,700 | 0% |
| $48,350–$533,400 | $96,700–$600,050 | 15% |
| $533,400+ | $600,050+ | 20% |
Additional federal rules include:
- Depreciation recapture: 25%
- Collectibles gains: up to 28%
- Net Investment Income Tax (NIIT): 3.8% for incomes above
- $200,000 (single)
- $250,000 (married filing jointly)
Wisconsin Capital Gains Tax in 2025
Wisconsin taxes capital gains as ordinary income, using the same statewide progressive income tax brackets that apply to wages and business income.
Wisconsin Income Tax Rates (2025)
Wisconsin’s 2025 tax brackets are:
- 3.54%
- 4.65%
- 5.3%
- 7.65% (top bracket)
Most investors with sizable capital gains fall into the 5.3% or 7.65% brackets.
Wisconsin Capital Gains Exclusions
Wisconsin offers two major exclusions for long-term capital gains:
1. 30% Capital Gains Exclusion
Wisconsin allows a 30% exclusion on most long-term capital gains, including:
- Stocks
- Mutual funds
- Real estate
- Most investment assets
After the 30% exclusion, only 70% of the gain is taxed at the taxpayer’s ordinary income tax rate.
2. 60% Exclusion for Wisconsin-Based Business Sales
Wisconsin allows a 60% exclusion for long-term capital gains from the sale of:
- Qualified Wisconsin-based small business stock
- Ownership interests in certain Wisconsin businesses
Requirements include:
- Asset held for more than one year
- Business must be based in Wisconsin
- Certain revenue and operational conditions must be met
This exclusion dramatically lowers the effective tax rate for business owners selling qualifying Wisconsin companies.
Effective Capital Gains Tax Rate in Wisconsin
Depending on the type of gain:
Long-Term Gains (30% Exclusion)
- Top bracket: 7.65% × 70% = 5.355% effective rate
- Mid bracket: 5.3% × 70% = 3.71% effective rate
Qualifying Business Gains (60% Exclusion)
- Top bracket: 7.65% × 40% = 3.06% effective rate
Short-Term Gains
No exclusion applies → taxed fully at 3.54%–7.65%
Case Study: Wisconsin Capital Gains Example
Scenario:
Ethan, a Wisconsin resident, purchased 5,000 shares of stock at $40 in 2019 and sells them in 2025 for $110.
Total gain:
5,000 × $70 = $350,000
Federal Taxes
Ethan falls into the 15% federal long-term capital gains bracket:
- Federal long-term tax:
$350,000 × 15% = $52,500
NIIT applies to $150,000 of the gain:
- NIIT:
$150,000 × 3.8% = $5,700
Total federal tax: $58,200
Wisconsin State Taxes
Because this is a long-term gain, the 30% exclusion applies:
- Taxable portion:
$350,000 × 70% = $245,000
Assuming Ethan is in the 7.65% bracket:
- Wisconsin state tax:
$245,000 × 7.65% = $18,742.50
Total Tax Liability
- Federal: $58,200
- Wisconsin: $18,742.50
- Total: $76,942.50
Wisconsin’s partial exclusion significantly reduces the state tax burden.
Strategies to Reduce Capital Gains Taxes in Wisconsin
1. Leverage Wisconsin’s 30% or 60% Capital Gains Exclusion
Ensure assets qualify for long-term treatment or Wisconsin-based business benefits.
2. Tax-Loss Harvesting
Offset gains with investment losses to reduce state and federal liability.
3. Use Tax-Deferred Retirement Accounts
Traditional IRAs, 401(k)s, and SEP IRAs reduce federal taxable income.
4. Utilize Charitable Giving Tools
Charitable remainder trusts (CRTs) and donor-advised funds (DAFs) help avoid immediate capital gains tax.
5. Consider Opportunity Zone Funds
Federal rules allow deferral or exclusion of certain gains.
6. Plan Installment Sales for Large Transactions
Spreading a sale across years may reduce federal tax burdens and NIIT exposure.
Wisconsin’s capital gains structure offers meaningful opportunities for tax reduction, particularly for long-term investors and Wisconsin business owners. Because the best strategy depends on asset type, income level, and timing, consider consulting a qualified tax professional or financial advisor to determine the most effective plan for your financial situation.