Divorce and Taxes: Filing Status, Alimony, and Splitting Assets

Filing & Brackets · TAX GUIDE

Divorce changes your filing status, how alimony is taxed, who claims the kids, and how property transfers are treated. Here's a clear guide to the tax side of separation.

Divorce is stressful enough without tax surprises. Yet decisions made during a separation — your filing status, who claims the children, how alimony is structured, and how you divide assets and retirement accounts — can have lasting tax consequences. Here's what you need to understand before you sign anything.

Your Filing Status Depends on December 31

Your marital status on the last day of the year determines your filing status for the entire year:

• If your divorce is final by December 31, you file as single (or head of household) for that year.
• If you're still legally married on December 31, you must file either married filing jointly or married filing separately — even if you've been living apart for months.

Filing jointly usually produces a lower combined tax, but it also makes both spouses jointly liable for the entire bill. Some separating spouses choose to file separately to avoid that shared liability.

Head of Household: A Valuable Option

If you're still married but living apart, you may be able to file as head of household — which offers a larger standard deduction and better brackets than married filing separately. To qualify you generally must have lived apart from your spouse for the last six months of the year, paid more than half the cost of keeping up your home, and have a qualifying child living with you more than half the year.

Alimony Rules Changed in 2019

The tax treatment of alimony flipped under the Tax Cuts and Jobs Act:

• For divorce agreements executed after December 31, 2018: alimony is NOT deductible by the payer and is NOT taxable to the recipient.
• For agreements executed on or before December 31, 2018: the old rules still apply — deductible to the payer, taxable to the recipient.

Child support is never deductible or taxable, regardless of date.

Dividing Property and Retirement Accounts

Transfers of property between spouses as part of a divorce are generally tax-free at the time of transfer — but the recipient takes the asset at its original cost basis, which means built-in gains transfer too. A house or stock portfolio that looks 'equal' on paper can carry very different tax bills when sold.

Splitting a 401(k) or pension requires a Qualified Domestic Relations Order (QDRO) to avoid early-withdrawal penalties and taxes. IRAs can be divided under the divorce decree itself. Getting these documents right is critical — a misstep can trigger taxes and 10% penalties on the entire transfer.

Frequently Asked Questions

Who gets to claim the children after a divorce?

Generally the custodial parent (the one the child lived with most of the year) claims the child. The custodial parent can release the exemption to the other parent using Form 8332. Only one parent can claim a given child in a given year.

Is alimony taxable?

It depends on the date. For divorce agreements after December 31, 2018, alimony is neither deductible by the payer nor taxable to the recipient. Older agreements follow the old deductible/taxable rules.

Is child support deductible?

No. Child support is never deductible by the payer or taxable to the recipient, regardless of when the agreement was signed.

Do I owe tax when my ex transfers me the house in the divorce?

Not at the time of transfer — property transfers between spouses incident to divorce are tax-free. But you inherit the original cost basis, so you may owe capital gains tax when you eventually sell.

How do we split a 401(k) without penalties?

You need a Qualified Domestic Relations Order (QDRO), a court order that directs the plan to divide the account. Done correctly, the transfer avoids the 10% early-withdrawal penalty and immediate tax.