South Dakota Alimony Calculator (2026)

South Dakota courts consider the factors listed in SDCL § 25‑4‑41—such as the length of the marriage, each spouse’s earning capacity, and the standard of living—to decide if alimony is appropriate. Both spouses must have been married, and the court looks for a need that the other spouse can reasonably meet.

Alimony is taxable to the recipient for federal income‑tax purposes, but South Dakota does not have a state income tax, so there is no state‑level tax on alimony payments.

Alimony is typically resolved as part of the final divorce decree. There is no fixed waiting period; the timeline depends on the court’s schedule, the complexity of the case, and whether the parties reach a settlement or require a trial.

The rule‑of‑thumb caps the recipient’s total income at 40% of the combined household income, which effectively reduces the support if the recipient’s own earnings push them above that threshold. In practice, a judge may adjust the amount based on the actual earnings and the statutory factors.

South Dakota has not adopted a statutory alimony formula, and there have been no recent legislative amendments to § 25‑4‑41. Courts continue to rely on the established factors and on guidelines such as the 30%‑minus‑20% rule for estimating support.

No. SDCL § 25-4-41 applies statewide, so courts in Sioux Falls, Rapid City, Aberdeen 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 South Dakota.