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A postnuptial agreement, or postnup, is a written contract that a married couple signs after they are already married. It sets out how the couple will divide assets, debts, property, and in many states spousal support if they later divorce or one spouse passes away. The main difference from a prenup is timing: a prenup is signed before marriage and a postnup is signed after.

The difference is timing. A prenuptial agreement, or prenup, is a written contract a couple enters into before they get married. A postnuptial agreement, or postnup, is the same kind of contract entered into after the couple is already married. Both cover how a couple handles assets, debts, and property, and both must meet your state's legal requirements to be enforceable.

You can create a postnuptial agreement at Postnup.com, HelloPrenup's sister brand. Postnup.com offers a state-specific postnup with two attorneys, one for each partner, plus e-signature and online notarization, for a flat $2,499 per couple. Postnup.com is rolling out state by state, so if your state is not live yet you can join the waitlist there.

At Postnup.com, a postnuptial agreement is a flat $2,499 per couple. That price includes a licensed attorney for each partner, e-signature, and online notarization. Traditional postnups through a law firm often range from $5,000 to $25,000.

In most states, yes, when they are done correctly. Enforceability rules vary by state, but a postnup is generally more likely to hold up when it is in writing and signed by both spouses, entered into voluntarily without pressure, based on full and fair financial disclosure from both spouses, and fair rather than unconscionable. Some states require each spouse to have their own attorney, which is why Postnup.com includes one for each partner. Because the rules are state specific, you should review your agreement with a licensed attorney in your state.

A postnup can address how a couple divides marital and separate property, how debts are handled, what happens to a home or a business, and in many states whether one spouse pays spousal support. A postnup generally cannot decide child custody or child support, because courts decide those issues based on the child's best interests at the time.

Couples sign postnups for many reasons: they did not sign a prenup before the wedding and want the same clarity now, one spouse received an inheritance or started a business, the couple's finances changed significantly, or they simply want a clear, shared agreement about money. A postnup can give both spouses peace of mind and reduce conflict later.

Yes. HelloPrenup is live for prenuptial agreements in 47 US states, with a flat fee of $599 per couple and no hidden fees. If you are not yet married, you can start your prenup today on HelloPrenup. If you are already married, head to Postnup.com for a postnup.

In most states a postnup should be signed and notarized, and some states also require witnesses. Notarization helps show the agreement was signed voluntarily. Postnup.com includes online notarization for both spouses, so this is handled for you.

You can, but a do-it-yourself or template postnup is risky. If it misses your state's requirements, leaves out full financial disclosure, or reads as one-sided, a court may refuse to enforce it. Working with attorneys, as you do on Postnup.com, makes the agreement far more likely to hold up.

On Postnup.com, most couples finish in about 2 to 10 days. The timeline depends on how quickly you and your partner complete your questionnaires and finalize the agreement with your attorneys. A traditional law firm postnup often takes 2 to 3 months.

For many couples, yes. A postnup gives you clarity and peace of mind about money, protects each spouse, and can reduce conflict later. At a flat $2,499 on Postnup.com, it costs a fraction of a traditional postnup, which can run $10,000 or more.

In many states a postnup can address spousal support, also called alimony, including whether it is paid and how much. Rules vary by state and a few limit support terms, so your attorney will confirm what is enforceable where you live.