A postnuptial agreement is a contract between spouses who are already married, settling how property, debts, and support will be handled during the marriage and if it ends. Couples reach for it after a windfall, a new business, a rough patch they worked through, or simply because they never got to a prenup.
This template classifies each spouse's separate property, the marital home, debts, and future earnings, and lets you waive, reserve, or fix spousal support. Download it in Word and PDF, ready to sign before a notary.
When married couples sign a postnup
- A business takes off: one spouse's company grows and both want its ownership and risks clearly assigned.
- An inheritance or windfall arrives: the receiving spouse wants it classified as separate before it blends into joint accounts.
- Reconciliation: after a difficult period, a postnup lets both spouses recommit with financial clarity instead of lingering doubt.
- The prenup never happened: the couple always meant to sign one and the wedding arrived first.
- Estate planning: clean property classification simplifies wills, trusts, and blended family planning.
Courts examine postnups more closely than prenups
Before the wedding, two people negotiate at arm's length: either can walk away. After the wedding, spouses owe each other fiduciary duties, and courts in most states presume closer scrutiny of agreements between them. A handful of states remain skeptical of postnups altogether. The practical consequences: disclosure must be complete and documented, terms must be fair when signed (and in some states, fair when enforced), and each spouse should have independent counsel. A postnup that strips one spouse of everything is the one most likely to fail.
Consideration matters in some states
A few states require something of value beyond the continuing marriage to support a postnup, such as mutual releases or reciprocal property concessions. Balanced, two-way terms strengthen the agreement everywhere.
Postnup, prenup, or separation agreement?
| Prenuptial | Postnuptial | Separation | |
|---|---|---|---|
| Signed | Before the wedding | During the marriage | When separating |
| Purpose | Plan before marrying | Adjust while together | Unwind the finances |
| Marriage continuing | Yes | Yes | Usually not |
| Court scrutiny | Standard | Heightened | Standard |
If you are already planning to separate, use a separation agreement instead: it addresses parenting schedules, support, and the division itself. A postnup is for couples staying married who want their financial framework settled.
Frequently asked questions
Are postnuptial agreements legally enforceable?
Yes, in nearly every state, provided they are in writing, signed voluntarily, based on full financial disclosure, and not unconscionable. Courts apply closer scrutiny than to prenups, so clean process and balanced terms matter even more.
Can a postnup fix what we would each get in a divorce?
Yes, for property and, in most states, spousal support. It cannot predetermine child custody or child support: courts always decide those based on the child's best interests at the time.
Do we each need our own attorney for a postnup?
It is strongly recommended. Because spouses owe each other fiduciary duties, a court reviewing the agreement will ask whether each side understood it and had a real chance for independent advice. Separate counsel is the best evidence of both.
Can a postnup protect me from my spouse's business debts?
Between the spouses, yes: it can assign the business and its liabilities to the owner spouse. It does not bind outside creditors on debts you personally signed or guaranteed, so avoid co-signing obligations you intend to keep separate.
Can we cancel or change our postnup later?
Yes. Like any contract between spouses, it can be amended or revoked by a new written agreement signed by both. Review it after major events: children, relocations, a business sale, or retirement.