- Metric: 1970
- Metric: law in 1969 (signed by Ronald Reagan
- Metric: 40 years
Divorce in America took a generational shift in the 1970s. California passed the first no-fault divorce law in 1969 (signed by Ronald Reagan, of all people), and the rest of the country followed over the next 40 years — New York was the last state to adopt no-fault divorce, in 2010. Today, every state allows no-fault divorce: you don't have to prove your spouse did anything wrong, just that the marriage is "irretrievably broken" or that there are "irreconcilable differences."
Some states also keep fault-based divorce on the books — adultery, cruelty, abandonment, prison sentence — and in those states, proving fault can affect how property is divided or whether alimony gets paid. Property division falls into one of two systems:
- Community property — nine states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin). Assets and debts acquired during the marriage are split 50/50.
- Equitable distribution — the other 41 states plus D.C. The court divides marital property based on what's fair, which often isn't 50/50 once length of marriage, income disparity, custody, and contributions get factored in.
Federal law doesn't govern divorce directly, but it shapes the edges. The Tax Cuts and Jobs Act of 2017 ended the alimony deduction for any divorce finalized after 12/31/2018 — paying spouses no longer deduct, receiving spouses no longer report it as income. 10 U.S.C. § 1408 lets state courts treat military retired pay as marital property. ERISA's QDRO mechanism lets you divide 401(k)s and pensions without triggering early-withdrawal penalties.