Mississippi Capital Gains Tax Calculator 2026

Mississippi Capital Gains Tax Rules

Mississippi has no separate capital gains rate. Short-term and long-term gains are both taxed as ordinary income under Mississippi's 2026 structure: the first $10,000 of taxable income is untaxed and the rest is taxed at a flat 4% (down from 4.4% in 2025). This state tax is separate from — and in addition to — the federal capital gains tax you owe to the IRS.

Understanding Mississippi'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 Mississippi state capital gains tax based on your sale price, cost basis, holding period, and income. It subtracts the 2026 federal standard deduction ($16,100 single, $32,200 married filing jointly, $24,150 head of household) from the income you enter, stacks the gain on top of your other income, and taxes each slice at its own rate.

Federal vs Mississippi Capital Gains Tax

The federal tax on a gain depends on your taxable income and on how long you held the asset. For long-term gains (held more than 12 months), the 2026 federal rates set by IRS Rev. Proc. 2025-32 are 0% on taxable income up to $49,450 single / $98,900 married filing jointly / $66,200 head of household, 15% up to $545,500 single / $613,700 joint / $579,600 head of household, and 20% above those thresholds. The gain is stacked on top of your other income, so one sale can be taxed partly at 0%, partly at 15% and partly at 20%. Short-term gains are taxed as ordinary income at the 2026 federal brackets of 10% to 37%. A 3.8% Net Investment Income Tax is added on the lesser of the gain or the amount by which your modified adjusted gross income exceeds $200,000 (single or head of household) or $250,000 (married filing jointly).

Worked example (2026): a single filer with $90,000 of other income sells stock held for two years at a $50,000 gain. Federal tax is $7,500 (the whole gain falls in the 15% band) and Mississippi tax is $2,000, a combined $9,500 or 19.0% of the gain. Sold after 11 months instead, the same gain is short-term: $11,364 federal plus $2,000 Mississippi tax, $13,364 in total. The calculator above reproduces both results.

Mississippi Cap Gains Strategies & Exemptions

Several strategies can help Mississippi 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 Mississippi state tax.

For Mississippi 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 calculator does not apply this exclusion, so enter only the gain that remains after it. Consult a Mississippi 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.

Capital Gains Tax Calculator Mississippi: $100,000 Home Sale Worked Example (2026)

Consider a Jackson, Mississippi homeowner who bought a house in 2015 for $180,000, invested $20,000 in a kitchen remodel (adjusted basis = $200,000), and sells in 2026 for $310,000. Selling costs (agent commission, title insurance): $22,000. Realized gain = $310,000 − $200,000 − $22,000 = $88,000. Because the seller is single and lived in the home more than 2 of the past 5 years, the entire $88,000 falls under the federal IRS Section 121 primary residence exclusion ($250,000 single / $500,000 MFJ). Federal capital gains tax owed: $0. Mississippi conforms to federal on the exclusion, so state capital gains tax also owed: $0. If the same house sold for $500,000, gain would be $278,000 — the first $250,000 excludes, but $28,000 is taxable. For a single filer with $60,000 of other income, $5,550 of that gain still fits in the 0% federal band and the rest is taxed at 15% = $3,368 federal, plus Mississippi's 4% = $1,120, total $4,488. Run the calculator above with the taxable part of your gain for your exact numbers. Updated 2026-10-07.

Mississippi Capital Gains Tax Rate Change: 4% for 2026 Under Phased Cut

Mississippi is in the middle of a multi-year income-tax phase-down that also drives the capital gains rate. The flat state rate for tax year 2026 is 4% (down from 4.4% in 2025), charged on taxable income above $10,000. Under HB 1 of 2025 it is scheduled to fall to 3.75% in 2027, 3.5% in 2028, 3.25% in 2029 and 3% in 2030, with further cuts possible if revenue triggers are met (Tax Foundation, 2026 State Income Tax Rates). For high-gain sellers, this schedule can change timing decisions: a $200,000 taxable gain realized in 2026 owes $8,000 to Mississippi; the same gain realized in 2027 would owe about $7,500, saving $500 with a one-year delay. This calculator uses the 2026 rate of 4%. Bookmark this page and re-run each January as the phase-down advances. Updated 2026-10-07.

Last updated: October 2026. Federal figures: IRS Rev. Proc. 2025-32 (2026 capital gains thresholds, brackets and standard deduction), IRS Topic 409 and IRS Topic 559 (Net Investment Income Tax). Mississippi: Mississippi income tax calculator (same 2026 state rules).