Everything engaged couples need to know about making a prenuptial agreement valid and enforceable in Indiana — in plain English, reviewed by attorney James Sexton, Esq.
Yes — prenuptial agreements are legal and enforceable in Indiana under Indiana Code § 31-11-3, the state's Uniform Premarital Agreement Act.
Indiana adopted the Uniform Premarital Agreement Act, codified at Indiana Code § 31-11-3, which applies to agreements executed after June 30, 1995. A premarital agreement must be in writing and signed by both parties, requires no consideration beyond the marriage, and takes effect when the couple marries. Prenups matter more in Indiana than in most states: Indiana's "one-pot" rule puts all property owned by either spouse — including premarital assets and inheritances — into the divisible estate, with a presumption of an equal split. A prenup is how you opt out of that.
An Indiana prenup is enforceable unless the challenging spouse proves it was signed involuntarily or was unconscionable at the moment it was executed.
The agreement must be a written document signed by both parties. Oral premarital agreements are not enforceable in Indiana, and no consideration other than the marriage is needed.
Under IC 31-11-3-8, an agreement is unenforceable if the challenger proves they did not execute it voluntarily. Coercion, duress, or a wedding-eve ultimatum are what courts look for.
Unlike the standard UPAA, Indiana makes unconscionability at signing a stand-alone defense — the challenger does not also have to prove a disclosure failure. Unconscionability is decided by the court as a matter of law.
Exchanging complete financial disclosure is the best evidence the agreement was informed and fair — and it defuses the unconscionability and voluntariness arguments before they start.
| Governing statute | Uniform Premarital Agreement Act — Indiana Code § 31-11-3 |
|---|---|
| Property division | Equitable distribution |
| Notarization | Recommended (not required by statute) |
| Waiting period | None required — but sign well before the wedding |
| Spousal support | Maintenance can be modified or waived — subject to an extreme-hardship override |
See how Indiana's signing formalities compare in our prenup notarization requirements by state guide.
Indiana courts enforce properly executed prenups and set them aside only for involuntary signing or unconscionability at execution.
IC 31-11-3-8 gives the challenging spouse just two doors: prove the agreement wasn't signed voluntarily, or prove it was unconscionable when executed. There is one statutory safety valve — if a provision eliminating spousal maintenance causes one party extreme hardship under circumstances not reasonably foreseeable at signing, the court may order maintenance to the extent necessary to avoid it. Sign early, disclose everything, and keep terms reasonable, and an Indiana prenup is among the hardest in the country to unwind.
Trusted Prenup creates a state-specific Indiana prenuptial agreement online — built to meet the requirements above and designed by James Sexton, Esq. A traditional attorney typically costs $2,500–$10,000; this is a flat $599.
A guided questionnaire captures your assets, debts, and wishes — most couples finish in under 90 minutes.
We assemble a complete prenup built to meet your state's exact legal requirements.
Review with your partner, then sign online with notarization handled for you.
Attorney-drafted prenups in Indiana typically cost $1,500–$6,000 or more depending on complexity. Trusted Prenup creates a state-specific Indiana prenup online for a flat $599, with optional notarization and attorney-review add-ons.
No. Indiana Code § 31-11-3 requires only a written agreement signed by both parties. Notarization is still recommended to prove the signatures are authentic, and it's available as an add-on.
Yes, but on narrow grounds: the challenger must prove the agreement was signed involuntarily or was unconscionable when executed. Indiana courts treat unconscionability as a question of law, judged as of the signing date.
In an Indiana divorce, all property owned by either spouse — including assets acquired before the marriage and inheritances — goes into a single divisible pot with a presumed 50/50 split. A prenup is the only reliable way to keep premarital assets, a family business, or an inheritance out of that pot.
Yes. Indiana allows couples to modify or eliminate spousal maintenance in a premarital agreement, though a court can order maintenance despite the waiver if enforcing it would cause extreme hardship from circumstances that weren't foreseeable at signing.
There's no statutory waiting period, but signing at least a month before the wedding makes a later involuntariness claim far weaker. Both of you should have time to read the final agreement and ask questions before signing.
Yes — Indiana enforces properly executed prenuptial agreements regardless of how they were drafted. What matters is execution: a written agreement, voluntary signatures, full financial disclosure, and Indiana's signing formalities. The full picture is in are online prenups legally binding.
Trusted Prenup is not a law firm and does not provide legal advice. This guide is general information about Indiana law and not a substitute for advice from a licensed attorney about your situation.