Mississippi Alimony Calculator (2026)

Mississippi judges use the Armstrong factors, but many practitioners start with the rule‑of‑thumb: 30% of the higher earner’s gross income minus 20% of the lower earner’s gross income, then reduce it if the recipient’s total income would exceed 40% of the couple’s combined income.

Mississippi does not have a separate state income tax on alimony. The tax treatment follows federal law: for divorces finalized after 2019, alimony is not deductible by the payer nor taxable to the recipient.

Yes. Periodic alimony is modifiable if there is a substantial change in circumstances, such as a significant change in either party’s income or health, and the court may adjust the amount or duration.

The rule‑of‑thumb suggests a duration of 75% of the marriage length, which for a 12‑year marriage equals about 108 months, though the court can order a different period or make it indefinite.

The Armstrong case identified 12 factors, including the length of the marriage, the age and health of each spouse, the standard of living established during the marriage, each party’s earning capacity, and contributions to the marriage, among others.

No. Miss. Code § 93-5-23; Armstrong v. Armstrong factors applies statewide, so courts in Jackson, Gulfport, Southaven and every other county start from the same guideline. Local practice can differ in how judges weigh deviation factors and in typical negotiated outcomes, but the formula on this page is the one used across Mississippi.