What it is: the same type of agreement as a prenup, but signed after the couple is already married. It can address the same financial matters: property, debts, business interests, inheritances, and spousal support.
Why do people sign one? married life changes — a new business, a mother-in-law financial: situation, a remarriage with children. A postnup turns “we agree” into “it’s in writing” for couples who want clarity later.
Common triggers: a sudden windfall or business growth, recovery from a rough patch, or blending families where each side wants their children protected.
Watch out for: the same validity rules apply — full disclosure and fair process. A postnup written to shut one spouse out after a fight, with no advice, won’t survive a challenge.
