Tools · Capital Gains Tax
Louisiana Capital Gains Tax Calculator (2026)
Estimate the tax on your capital gains in Louisiana for 2026. Enter your gain, holding period, and other income to see federal long- or short-term tax, the 3.8% Net Investment Income Tax, and Louisiana’s share, broken out line by line.
Louisiana capital gains tax calculator
How to read the rows below: the slice of your gain → the tax on that slice.
- Gain taxed at 0% (long-term)
- $15,550 → $0
- Gain taxed at 15% (long-term)
- $4,450 → −$668
- Federal long-term capital gains tax
- −$668
- Net Investment Income Tax (3.8%)
- $0
- Louisiana income tax on gain
- −$600
- Total capital gains tax
- $1,268
Louisiana taxes capital gains as ordinary income. Louisiana replaced its old graduated brackets with a flat 3% rate starting in 2025 (Act 11). It pairs that with a large standard deduction of $12,500 single / $25,000 married-jointly.
Note on 2026 figures: The flat 3% rate is fixed for 2026. The standard deduction ($12,500/$25,000) is the enacted base amount and is now indexed to inflation each January starting 2026; the exact CPI-adjusted 2026 figure had not been posted at build, so the base amount is used here.
Federal: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration. State: Louisiana Department of Revenue.
Estimate for 2026. Long-term gains are stacked on top of your other taxable income across the 0/15/20% federal breakpoints; short-term gains are taxed as ordinary income. The 3.8% Net Investment Income Tax, an extra federal surtax on investment income, applies once your income clears the threshold. Excludes state credits, the alternative minimum tax, and loss carryovers. This is general information, not tax advice.
How capital gains tax works in Louisiana
Long-term gains (assets held more than a year) get the federal 0/15/20% rates — but the rate depends on where the gain lands once it is stacked on top of your other taxable income, so part of a gain can be taxed at 0% and the rest at 15%. Short-term gains are taxed as ordinary income. On top of that, the 3.8% Net Investment Income Tax applies once your income clears $200,000 (single) or $250,000 (married-jointly).
Louisiana taxes capital gains as ordinary income, at the same rate as your wages. Louisiana replaced its old graduated brackets with a flat 3% rate starting in 2025 (Act 11). It pairs that with a large standard deduction of $12,500 single / $25,000 married-jointly.
This is an annual-bracket estimate, not your final return. It excludes the alternative minimum tax, loss carryovers, and state credits. It is general information, not tax advice. Federal figures: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration.
Capital gains calculators for other states
Same 2026 engine, each with its own state rules.