⚖ Divorce & taxes

Alimony Tax Calculator

This alimony tax calculator shows whether your alimony payments are tax-deductible or taxable in 2026 based on when your divorce was finalized. The TCJA changed the rules for divorces after 2018. Enter your situation to see the federal tax impact on both the payer and recipient.

Pre-2019 vs post-2018 Payer & recipient view 2026 brackets

⚖ Your alimony tax impact

The TCJA split

How alimony is taxed in 2026

The tax treatment of alimony depends entirely on when your divorce was finalized. The Tax Cuts and Jobs Act (Section 11051) created a hard dividing line at January 1, 2019.

Post-2018 divorces: no deduction, no income

For any divorce or separation agreement executed after December 31, 2018, alimony is paid with after-tax dollars. The payer cannot deduct payments, and the recipient does not report them as income. The full tax burden stays with the higher-earning payer.

Pre-2019 divorces: deduction for payer, income for recipient

Divorces finalized before January 1, 2019 still follow the old rules. The payer deducts alimony as an above-the-line adjustment (reducing AGI), and the recipient includes it as taxable income. This shifts part of the tax burden from the higher bracket to the lower bracket, often reducing the combined tax bill.

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Child support is always tax-neutral: Child support payments are never deductible by the payer and never taxable to the recipient, regardless of divorce date. Only alimony (spousal support/maintenance) is affected by these rules.

Questions

Alimony tax calculator FAQ

Is alimony taxable in 2026?

It depends on when your divorce was finalized. For divorces executed after December 31, 2018, alimony is NOT deductible by the payer and NOT taxable to the recipient. For divorces finalized before January 1, 2019, alimony IS deductible by the payer and taxable to the recipient, under the old rules.

What changed about alimony taxes under the TCJA?

The Tax Cuts and Jobs Act of 2017 (Section 11051) eliminated the alimony deduction for the payer and removed the income inclusion for the recipient for any divorce or separation agreement executed after December 31, 2018. Agreements finalized before that date continue under the old rules unless both parties agree to opt into the new rules via a modification.

Can I deduct alimony if my divorce was before 2019?

Yes. If your divorce or separation agreement was executed before January 1, 2019, and has not been modified to adopt the new TCJA rules, alimony payments are still deductible by the payer as an above-the-line adjustment on Form 1040 and taxable as income to the recipient.

Is child support treated the same as alimony for taxes?

No. Child support is never deductible by the payer and never taxable to the recipient, regardless of when the divorce was finalized. Only alimony (spousal support) payments are affected by the pre-2019 vs post-2018 distinction. The divorce agreement must clearly separate alimony from child support.

Does the recipient need to report alimony as income?

Only if the divorce was finalized before 2019. Under the old rules, the recipient must report alimony as taxable income and pay income tax on it. Under the new TCJA rules (post-2018 divorces), the recipient does not report alimony as income — it is tax-free to them.

Can we modify our divorce agreement to change the tax treatment?

Yes, but only in one direction. Couples with pre-2019 agreements can modify them to adopt the new TCJA rules (no deduction, no inclusion) if both parties agree. Couples with post-2018 agreements cannot switch back to the old rules. The modification must specifically state that the TCJA rules apply.

Mustafa Bilgic
Reviewed & maintained by
Mustafa Bilgic — Editor, SalaryCalculator.us

Alimony rules from IRS Topic 452; TCJA Section 11051.

  • Sources: TCJA Section 11051 (alimony deduction repeal for post-2018 divorces) · IRC Section 71 (pre-2019 alimony inclusion) · IRS Rev. Proc. 2025-32 (2026 brackets).
  • 🔄 Last updated July 2026 · Tax year 2026

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