Prenuptial Agreements in Indiana: The Rules, the Costs, and How to Get One

You are planning a wedding in Indiana, and somewhere between the venue deposit and the guest list, the word "prenup" came up. Maybe one of you raised it. Maybe a parent did. Either way, you want to know what it means here, in this state, before you spend money or sign anything.

Here is the reassuring part. Indiana makes premarital agreements more straightforward than many states do. Divorce is common enough across the country that planning for the possibility is reasonable; a 2022 research estimate from the BGSU National Center for Family and Marriage Research put Indiana's refined divorce rate at about 17.79 per 1,000 married women. That figure comes from research data, not from the state, because Indiana does not report divorce counts to the CDC's National Vital Statistics System. A prenup is one way to decide together, ahead of time, what happens to what you own. This guide covers whether prenups are valid in Indiana, what makes one hold up, how the state divides property without one, what a prenup can cover, what it costs, and how to get one.

Are prenups valid in Indiana?

Yes. Indiana recognizes premarital agreements under its version of the Uniform Premarital Agreement Act, found in Indiana Code Title 31, Article 11, Chapter 3. The formation rule is short. An Indiana prenup must be in writing and signed by both partners, and it is enforceable without consideration, meaning neither partner has to give the other something of value to make the agreement binding.

That is the whole requirement on paper. No notary. No witnesses. No mandatory independent attorney. Some law firm pages describe hiring separate counsel as "highly recommended," which is their view, not a rule in the statute. Indiana law asks for a writing and two signatures.

Notarizing is still worth doing, even though it is optional, because a notarized signature is straightforward evidence that both partners signed. First includes online notarization for that reason.

What makes an Indiana prenup enforceable?

This is where Indiana stands apart from many states. Under Indiana Code 31-11-3-8, a court will refuse to enforce a prenup only if the partner challenging it proves one of two things: that they did not sign voluntarily, or that the agreement was unconscionable when it was executed. Unconscionable means so one-sided or unfair at the time of signing that a court will not enforce it, and in Indiana the judge decides that question as a matter of law.

Two grounds make up the test. There is no separate statutory prong requiring a specific financial disclosure the way some states have one, though disclosure still matters, and here is why.

Full disclosure and early signing are the two things within your control that keep an agreement out of the unconscionable column. If each partner laid out their finances in full, and each had time to read and consider the terms, it becomes hard for anyone to later argue the deal was unfair or coerced. An agreement built on full disclosure and signed with time to spare is built to pass Indiana's test. If you want the broader picture, our guide on what makes a prenup enforceable walks through the general checklist, and our post on why full financial disclosure matters for a prenup explains the disclosure piece in more depth.

How does Indiana divide property without a prenup?

Without a prenup, Indiana follows what many people call the "one pot" rule. Under Indiana Code 31-15-7-4, a divorcing court can divide property owned by either spouse before the marriage, acquired by either alone during it, or acquired jointly, in a just and reasonable manner. Everything you brought in is in the pot by default.

That word "everything" is what makes a prenup meaningful in Indiana even for couples with modest assets. In many states, property you owned before the wedding stays yours automatically. Indiana does not draw that line by default. The house you bought before you met your partner, the savings you built in your twenties, the inheritance you set aside: absent an agreement, a court can consider all of it.

Indiana law starts from a rebuttable presumption that an equal, 50/50 split is just and reasonable, though either partner can present evidence to move a court off that line. A prenup lets the two of you decide in advance what stays separate instead of leaving it to that default. If you are curious how Indiana compares with other states on this, our state-by-state guide to how prenups vary lays out the differences.

What can an Indiana prenup cover?

An Indiana prenup can address most of the financial questions a marriage raises. You can designate which property stays separate and which becomes shared. You can decide how property acquired during the marriage will be treated. You can handle debt, so that a loan one partner brought in stays that partner's responsibility. You can address spousal maintenance (Indiana's term for support paid after divorce), including waiving it or setting terms. You can include estate provisions that coordinate with your wills.

There is one clear limit worth stating plainly. An Indiana prenup cannot set child support or child custody. Those are decided by the court based on the child's best interests at the time of the divorce, not by a contract signed years earlier. A prenup that tried to set a custody arrangement or waive a child's support would not be enforced on those points.

Thinking of an Indiana prenup as the tool that decides what comes out of the one pot, rather than a document about distrust, tends to make the conversation with your partner easier.

How much does a prenup cost in Indiana?

Cost is where most couples feel the difference between the two paths. Because each partner should have their own lawyer to avoid a conflict of interest, hiring attorneys means paying two of them.

According to the Clio 2025 Legal Trends Report, Indiana attorneys average around $291 an hour across all practice areas, and about $284 an hour in family law. In the Indianapolis area, published family law rates commonly run $200 to $500 an hour. Run the math across two separately retained attorneys and the couple's combined bill commonly lands between $2,100 and $12,400, depending on how complex your finances are and how much back and forth the drafting takes.

Here is how the paths compare:

First's Self-Serve package is a flat $649 for the couple, with online notarization included. No PDFs to wrangle, no hourly rates, no back and forth with two firms. For a fuller look at what drives prenup pricing generally, see our guide on how much a prenup costs. You can also see First's exact pricing on our pricing page.

How do you get a prenup in Indiana?

The process is more approachable than most people expect. Here is the practical sequence.

Nothing in Indiana law treats an agreement differently because of how it was produced. What matters is that it is in writing and signed, that both partners disclosed their finances fully, and that both signed freely. That is why a prenup in Indiana can be completed online for a flat fee for the couple, with notarization included, and stand on the same legal footing as one drafted across a conference table.

Frequently asked questions

Are prenups enforceable in Indiana?

Yes. Under Indiana Code 31-11-3-8, a prenup fails only if the partner challenging it proves they did not sign voluntarily or that the agreement was unconscionable when executed. An agreement built on full disclosure and signed with time to spare is built to pass that test. Those are the two things within your control.

Does an Indiana prenup have to be notarized?

No. Indiana law does not require a prenup to be notarized to be valid; it asks for a writing signed by both partners. Notarizing is still worth doing, because a notarized signature is straightforward evidence that both partners signed. First includes online notarization with every Indiana agreement for that reason.

How much does a prenup cost in Indiana?

Hiring attorneys commonly runs $2,100 to $12,400 for the couple at Indianapolis-area rates of $200 to $500 an hour, since each partner needs their own. First offers a flat-fee Indiana prenup for the couple, completed online with notarization included, which removes the two-firm hourly math entirely.

Can I do an Indiana prenup online?

Yes. Nothing in Indiana law treats an agreement differently because of how it was produced. What matters is that it is in writing and signed, that both partners disclosed their finances fully, and that both signed freely. An online agreement that meets those conditions stands on the same footing as one drafted in an office.

When should we sign a prenup in Indiana?

As early as you reasonably can. Indiana sets no waiting period, but how much time each partner had to read and consider the agreement is what a court looks at first if it is ever challenged. Signing months ahead removes the last-minute pressure argument before anyone can raise it.

What can't an Indiana prenup include?

An Indiana prenup cannot set child support or child custody. Those are decided by the court based on the child's best interests at the time of the divorce, not by a contract signed years earlier. Everything financial between the two partners is fair game; anything affecting a child's rights is not.

Getting started

A prenup in Indiana is a way to decide together, calmly and in advance, what comes out of the "one pot" if life takes an unexpected turn. Getting one does not have to mean two law firms and a stack of hourly bills. You set the terms now, with full information and time to consider them, which is the same thing a court will look for later.

If you are planning a wedding in Indiana and want a clear, enforceable path, an Indiana prenup can be completed online for a flat fee for the couple, with notarization included. Start when you have time to talk it through, and let the agreement reflect the future you are building together.

Methodology

Attorney cost ranges are drawn from the Clio 2025 Legal Trends Report for Indiana and published Indianapolis-area family law rates, with couple totals calculated by applying those hourly rates to two separately retained attorneys. Divorce-rate context is drawn from the National Center for Family and Marriage Research (2022), which estimates a refined rate from Census American Community Survey data, because Indiana does not report divorce counts to the CDC's National Vital Statistics System.

Sources

First is not a law firm. The information and tools provided by First on this site are not legal advice and not a substitute for the advice of an attorney.