Postnuptial Agreements,
Online
Already married? A postnup covers everything a prenup covers — assets, debts, property, spousal support — signed after the wedding instead of before. AI-drafted, jurisdiction-aware postnuptial agreements are coming to prenups.ai.
No spam — one email when it launches.
The basics
What is a postnuptial agreement?
A postnuptial agreement is a written contract between spouses — signed after the wedding — that decides how your assets, debts, income, and spousal support would be handled if the marriage ends. It answers the same questions a prenuptial agreement answers. The only structural difference is timing: a prenup is signed before you marry, a postnup at any point after.
Without one, those questions are answered for you by your state or province's default rules — community property or equitable distribution — which may look nothing like what you and your spouse would choose. A postnup replaces those defaults with terms you both agreed to, while things are good.
Postnuptial agreements are recognized in every US state and, in Canada's common-law provinces, the law is even friendlier: a marriage contract can be signed before or during the marriage under the same statute. One thing to know: because married spouses owe each other heightened legal duties, courts tend to scrutinize postnups more closely than prenups — full financial disclosure, voluntary signing, and jurisdiction-correct drafting matter even more.
Postnup vs prenup
Same protection, different timing
| Prenuptial agreement | Postnuptial agreement | |
|---|---|---|
| When it's signed | Before the wedding | Any time during the marriage |
| What it covers | Assets, debts, property, spousal support | The same |
| Legal recognition | All US states + Canadian provinces | All US states + common-law provinces |
| Court scrutiny | Standard enforceability tests | Often reviewed more closely |
| Availability on prenups.ai | Available now — $349 | Coming soon |
Not married yet? You want a prenup — you can create one right now.
Why now
Why couples get a postnup
An inheritance arrived
Family wealth received during marriage can become marital property if commingled. A postnup keeps it clearly separate.
A business started or grew
A company founded or scaled after the wedding has no prenup protection. A postnup defines who owns what — including future growth.
One of you left the workforce
Staying home with kids changes earning power permanently. A postnup can set fair spousal support terms in advance.
You never got the prenup
Wedding planning ate the timeline, or the conversation felt too hard. A postnup is the second chance at the same protection.
Rebuilding after a rough patch
Some couples reconciling after conflict want financial terms in writing. A postnup turns a hard conversation into a signed understanding.
State law is not your plan
Without an agreement, your state or province decides how everything divides. A postnup replaces default rules with your terms.
Free quiz
Do I need a postnup?
Answer 8 quick questions about your marriage and finances to find out.
Did you sign a prenup before the wedding?
A postnup is how couples without a prenup get the same protection — or how couples with an outdated prenup refresh it.
FAQ
Postnuptial agreements: common questions
What is a postnuptial agreement?
A postnuptial agreement (postnup) is a written contract between spouses, signed after the wedding, that sets out how assets, debts, income, and spousal support would be handled if the marriage ends. It covers the same ground as a prenuptial agreement — the only structural difference is timing: a prenup is signed before marriage, a postnup after.
What is the difference between a prenup and a postnup?
Timing and scrutiny. A prenup is signed before the wedding; a postnup is signed at any point during the marriage. Because married spouses owe each other fiduciary duties, courts in many US states review postnups more closely than prenups — full financial disclosure and voluntary signing matter even more. The substance of the two documents is otherwise very similar.
Can you get a prenup after marriage?
Not literally — a prenuptial agreement by definition must be signed before the wedding. But the postnuptial agreement exists for exactly this situation: it is the "prenup after marriage," covering the same topics with the same goal of deciding your own terms instead of defaulting to state law.
Are postnuptial agreements enforceable?
Postnuptial agreements are recognized in every US state (Ohio was the last to allow them, in 2023) and across the Canadian common-law provinces, where a "marriage contract" can be signed before or during marriage. Enforceability standards vary by jurisdiction and courts generally scrutinize postnups more closely than prenups — which is why jurisdiction-specific drafting, full disclosure, and voluntary execution are essential.
Why do couples get a postnup?
Common triggers: one spouse receives an inheritance or family wealth, starts or grows a business, or leaves a career to raise children; the couple never got around to a prenup before the wedding; or the couple is rebuilding trust after a rough patch and wants financial terms in writing. A postnup replaces uncertainty with terms you both chose.
How much will a postnuptial agreement cost on prenups.ai?
Pricing is not final, but we expect it to match our prenuptial agreement: a one-time fee of $349, compared to the $2,500–$7,000+ that a lawyer-drafted postnup typically costs. Waitlist members will be the first to know.
When will postnuptial agreements be available on prenups.ai?
Postnuptial agreements are in development. Join the waitlist and we will send you a single email when they launch — no spam, no drip campaign.
What can a postnuptial agreement cover?
Separate vs marital property, real estate, business ownership, retirement accounts, debt responsibility, spousal support, and inheritance protection — the same coverage as a prenuptial agreement. Like a prenup, it cannot pre-decide child custody or child support.
Be first in line when postnups launch
One email at launch. Same guided process, plain-English explanations, and jurisdiction-specific drafting as our prenuptial agreements.
Getting married and need protection now? Create your prenuptial agreement today