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District of Columbia Alimony Calculator (2026)

Under D.C. Code § 16‑913, District of Columbia courts award alimony “as seems just” after weighing a list of statutory factors; there is no fixed formula, and awards are often rehabilitative. This estimate applies the widely‑used American Academy of Matrimonial Lawyers rule‑of‑thumb to give a rough starting point.

Reviewed 2026-09-02 · Estimates only — not legal or financial advice.

District of Columbia has no statutory alimony formula. Courts decide case by case under D.C. Code § 16-913. The calculator below shows a widely used rule of thumb (the AAML guideline) as a negotiation starting point — it is not the law and a judge may land anywhere the factors justify.
Before taxes.
Before taxes.
The law behind this calculator: District of Columbia alimony factors — D.C. Code § 16-913.

How District of Columbia calculates it

  • Identify the higher‑earning spouse’s annual gross income.
  • Multiply that income by 30%.
  • Identify the lower‑earning spouse’s annual gross income and multiply by 20%.
  • Subtract the lower‑earner amount from the higher‑earner amount.
  • Apply the 40% cap so the recipient’s total income does not exceed 40% of the combined income.
  • Determine duration: 30% of marriage length if under 3 years, 50% for 3–10 years, 75% for 10–20 years, indefinite if over 20 years.

Worked example

Higher earner $100,000/year, lower earner $40,000/year, 12-year marriage: 30% × $100,000 = $30,000; 20% × $40,000 = $8,000; difference $22,000/year, reduced to $16,000 by the 40% cap ≈ $1,333/month as a rule-of-thumb starting point. Duration guide for 12 years (10–20 years): 75% of 144 months ≈ 108 months. The court is not bound by any of this.

Frequently asked questions

How does D.C. determine the amount of alimony?

D.C. courts have no statutory formula; they consider the factors listed in D.C. Code § 16‑913 and may award alimony “as seems just.” Practitioners often use the AAML rule‑of‑thumb (30% of the higher earner minus 20% of the lower earner, capped at 40% of combined income) as an estimate.

Is alimony taxable in the District of Columbia?

Alimony received after 2018 is not taxable to the recipient and is not deductible by the payer, mirroring the federal treatment; therefore D.C. income tax does not apply to alimony.

Can my own earnings reduce the alimony I receive in D.C.?

Yes. The rule‑of‑thumb caps the recipient’s total income at 40% of the combined income, so any earnings you have are counted toward that limit and can lower the payable amount.

How long might alimony last after a 12‑year marriage in D.C.?

The guideline suggests a duration of 75% of the marriage length. For a 12‑year marriage that translates to roughly 108 months (about 9 years), though the court can set a different term.

What recent changes affect alimony awards in D.C.?

There have been no statutory amendments to D.C. Code § 16‑913; the “as seems just” standard remains, and the AAML rule‑of‑thumb continues to be a common reference for estimating amounts and duration.

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