Alabama Capital Gains Tax, Explained

On paper, Alabama has a graduated bracket system: 2% on the first slice of taxable income, 4% on the next, then 5% on the rest. In practice, the brackets are so narrow that they barely register. A single filer hits the 5% rate above just $3,000 of taxable income; a married couple filing jointly hits it above $6,000. Any capital gain worth planning around is going to be taxed almost entirely at the top 5% rate, with the 2% and 4% tiers shaving off only a few hundred dollars total.

There's no separate long-term capital gains schedule and no holding-period discount. A gain you held for ten years and a gain you held for ten days are both just ordinary income to Alabama.

Those numbers are before the federal deduction covered next, which is where Alabama's math actually gets interesting for higher earners.

Almost no state does this: Alabama lets individual taxpayers deduct the federal income tax they paid or accrued during the year from their Alabama taxable income. There's no dollar cap on the deduction. It traces back to Amendment No. 225 to the Alabama Constitution, ratified in 1965, which means undoing it would take another constitutional amendment, not just a legislative vote. Nonresidents get a prorated version, limited to the federal tax attributable to their Alabama-source income.

The mechanical effect is that Alabama's real marginal rate on a large gain is lower than the stated 5%, and the gap grows as your federal bracket climbs. A taxpayer in a high federal bracket pays a larger federal tax bill, which produces a larger Alabama deduction, which shrinks the Alabama taxable base.

This is the kind of feature that rarely shows up in generic "capital gains tax by state" rankings, because those rankings usually just cite the 5% headline rate. For a seller weighing where to be domiciled, or simply trying to model a real Alabama tax bill accurately, the federal deduction is not optional detail, it changes the number.

The state math is only half the picture. Federally, a long-term gain is taxed at 0%, 15%, or 20% depending on your taxable income, and the 3.8% net investment income tax layers on top once modified adjusted gross income clears $200,000 single or $250,000 married filing jointly. Short-term gains are taxed at ordinary federal rates, which can run as high as 37%.

Because Alabama's federal deduction is tied to what you actually paid the IRS, a gain that pushes you into a higher federal bracket does double duty on the Alabama side too: more federal tax owed means a larger Alabama deduction, partially offsetting the state's own 5% bite. It's not a wash, but it's a meaningful cushion that a flat headline-rate comparison misses entirely.

Alabama's return builds from your federal numbers, so the big federal real-estate provisions carry through: the Section 121 exclusion ($250K/$500K) on a primary residence, installment-sale treatment, and 1031 exchange deferral for investment property, see the 1031 exchange rules. On a rental sale, the entire gain, including depreciation recapture, is ordinary income to Alabama at the effectively-flat 5% rate. There's no separate state recapture schedule the way there is federally.

Investors should model the federal depreciation recapture layer (up to 25%) alongside Alabama's rate, and anyone deciding between selling and renting an old home should read Sell or Rent Your House? before listing.

Alabama's Gulf Coast, Gulf Shores and Orange Beach in particular, is one of the more active short-term-rental and second-home markets in the Southeast, drawing buyers partly for the beaches and partly for Alabama's comparatively low overall cost of living. Owners in that market who eventually sell face the same mechanics as any Alabama real estate seller: ordinary-income treatment at the graduated brackets, full recapture on any depreciation claimed, and the federal deduction easing the state bill somewhat for higher earners.

If the property was run as a short-term rental, the exit math also depends on how it was used, see the STR strategy for how cost segregation and material participation change both the deductions taken going in and the recapture owed going out.