Creating a Postnuptial Agreement to Protect Assets During Marriage in SC

Your financial situation changed after you got married. Maybe you started a business. Maybe you received an inheritance. Maybe one of you came into money you want to protect.

Or maybe your marriage hit a rough patch and you’re trying to work things out—but you want some financial protection in place just in case.

South Carolina allows postnuptial agreements—contracts you create after you’re already married that determine how property gets divided if you divorce.

What a Postnuptial Agreement Actually Does

A postnuptial agreement (or “postnup”) is a written contract between spouses that determines:

• How marital property will be divided if you divorce. Instead of letting a judge decide, you and your spouse agree now on who gets what.
• Which assets stay separate. You can designate certain property—like an inheritance, a business, or property you owned before marriage—as separate property that won’t be divided in a divorce.
• Alimony arrangements. You can agree to waive alimony entirely, limit it to a certain amount, or set specific terms for spousal support.
• Debt responsibility. You can decide who’s responsible for specific debts if the marriage ends.
• Financial arrangements during the marriage. Some couples use postnups to establish how they’ll handle household expenses, savings, and major purchases while they’re still married.

The main difference between a postnup and a prenup is timing. Prenups are signed before marriage. Postnups are signed after.

When You Need a Postnuptial Agreement

Here are common situations where couples create postnups in Rock Hill and throughout South Carolina.

• One spouse receives a large inheritance. You want to make sure that money stays yours if the marriage ends, rather than being considered marital property.
• You start a business during the marriage. You’re building a company, and you don’t want your spouse to have a claim to half of it if you divorce.
• Your financial situation changes dramatically. Maybe one of you got a huge promotion, won money, or received a windfall. A postnup protects those new assets.
• You’re trying to save your marriage after infidelity or trust issues. Some couples use postnups as part of reconciliation—providing financial security as a condition of staying together.
• One spouse has significant debt. You want to protect yourself from being responsible for your spouse’s debts if you divorce.
• You have children from a previous marriage. A postnup can protect assets you want to leave to your kids from a prior relationship.
• You didn’t get a prenup before marriage. You wish you had one, and now you’re fixing that mistake.

What Makes a Postnup Valid in South Carolina

South Carolina law will enforce postnuptial agreements—but only if they meet specific requirements.

• It Must Be in Writing and Signed

  Verbal agreements don’t count. The postnup must be a written document signed by both spouses.

• Both Spouses Must Fully Disclose Their Finances

  You can’t hide assets. Failing to disclose assets can make the entire agreement invalid. Attach sworn financial affidavits to the postnup showing everything each spouse owns and owes.

• The Agreement Must Be Voluntary

  Neither spouse can be forced, coerced, or pressured into signing. Both of you have to enter the agreement willingly and of your own free will.

• The Terms Must Be Fair and Reasonable

  The agreement can’t be “unconscionable”—meaning it can’t be so one-sided that it’s grossly unfair.

• Each Spouse Should Have Their Own Lawyer

  While not technically required, having separate attorneys review the postnup is the best way to ensure it’s enforceable.

What You Can’t Include in a Postnup

South Carolina courts won’t enforce certain provisions:

• Child custody or visitation arrangements. These decisions must be based on the child’s best interests at the time of divorce, not on what you agreed to years earlier.
• Child support amounts. Courts will calculate child support based on South Carolina’s guidelines, regardless of what your postnup says. You can’t bargain away a child’s right to support.
• Illegal activities. You can’t agree to do anything illegal, obviously.
• Provisions that encourage divorce. You can’t include terms that give one spouse a financial incentive to divorce, like bonuses for ending the marriage.

Can You Modify or Cancel a Postnup?

Yes. As long as both spouses agree, you can change or cancel a postnuptial agreement at any time.

Any modifications must be in writing and signed by both parties. You can execute multiple postnups that cover different issues or update previous marital agreements as your circumstances change.

When Courts Won’t Enforce a Postnup

South Carolina courts can refuse to enforce postnuptial agreements if:

• One spouse was coerced or pressured into signing. If you can prove you were forced to sign under duress or threats, the agreement is invalid.
• There was fraud, misrepresentation, or failure to disclose assets. If one spouse hid significant assets or lied about their finances, the court won’t enforce the postnup.
• The agreement is unconscionably unfair. If the terms are so one-sided that enforcing them would be unjust, the court can throw out the agreement.
• Circumstances have changed dramatically. If the facts and circumstances have changed so much that enforcing the original agreement would be unreasonable and unfair, the court might not enforce it.

For example, if you agreed your spouse would keep a lake house worth $200,000, but then you and your spouse spent years renovating it together and it’s now worth $800,000, the court might find it unfair to give your spouse the entire increased value.

Postnups vs. Prenups

The only real difference is timing and scrutiny.

• Prenups are signed before marriage when both parties are on more equal footing. They’re easier to enforce because there’s less potential for one spouse to pressure the other.
• Postnups are signed after marriage, when the power dynamic may be different. Courts look at them more carefully to make sure neither spouse was coerced.

Both can cover the same issues. Both need full financial disclosure. Both must be fair and voluntary.

If you didn’t get a prenup before your wedding, a postnup accomplishes the same goal—it just requires more careful drafting to ensure enforceability.

Take Control of Your Financial Future Now

Whether you’re protecting an inheritance, saving a troubled marriage, or just creating a clear financial plan for your future, a well-drafted postnup provides peace of mind.

At Okoye Law, we help couples in Rock Hill, Fort Mill, and throughout York County create postnuptial agreements that protect their assets and their futures.

Contact us today to schedule a confidential consultation. Let’s create a financial plan that works for both of you—one that protects what matters most while strengthening your marriage moving forward.

The best time to create a postnup was before your circumstances changed. The second-best time is right now.