California Family Code Section 2640 gives a divorcing spouse the right to be paid back, dollar for dollar, for separate property money they put into buying or improving community property or their spouse’s separate property. The reimbursement carries no interest and no share of appreciation, and it cannot exceed the property’s net value at the time of division. The right applies automatically unless the contributing spouse signed a written waiver.
What Contributions Qualify
The statute is narrow about what counts. Reimbursable contributions are limited to down payments, payments for improvements, and payments that reduce the principal balance of a loan used to acquire or improve the property.1California Legislative Information. California Code FAM 2640 – Property Reimbursement Rights On a mortgage payment, only the principal portion qualifies. The interest portion does not.
Payments for maintenance, insurance, and property taxes are excluded. Those expenses keep a property running but do not build equity. If you used $50,000 of inheritance money for a down payment and another $5,000 of separate funds to pay property taxes over the years, only the $50,000 is a Section 2640 claim.
Reimbursement From Community Property
Under Section 2640(b), when the court divides community property, a spouse who contributed traceable separate funds to that property gets reimbursed before the equal split. This arises most often with the family home: one spouse brings in premarital savings or an inheritance and puts it toward the down payment or principal on a house titled in both names.
The reimbursement comes off the top. Say the home is worth $800,000 with a $400,000 mortgage, leaving $400,000 of equity. If you can trace a $100,000 separate property down payment, you receive that $100,000 first. The remaining $300,000 is community equity, split equally, so you take home $150,000 of the community share on top of your $100,000 reimbursement.1California Legislative Information. California Code FAM 2640 – Property Reimbursement Rights
Reimbursement From a Spouse’s Separate Property
Section 2640(c) covers a scenario many people miss. If you used separate funds to help buy or pay down property that is entirely your spouse’s separate property, you still have a reimbursement claim. Suppose your spouse owned a rental before the marriage and you used an inheritance to pay down its mortgage. The rental is not divided in the divorce, but the money you put into it is recoverable.1California Legislative Information. California Code FAM 2640 – Property Reimbursement Rights
Two things can defeat this subsection (c) claim. One is a valid transmutation under Family Code Section 852, which requires a signed, express written declaration by the spouse whose interest is being changed.2California Legislative Information. California Code FAM 852 – Transmutation of Property The other is a written waiver of the reimbursement right. Without one of those documents, the claim survives.
How the Amount Is Calculated
The math is simple and sometimes harsh. You get back only the dollars you contributed. No interest accrues, no matter how long ago the contribution was made, and there is no adjustment for inflation or for how much the property has appreciated. A $75,000 down payment made in 2005 is a $75,000 reimbursement in 2026, even if the home has tripled in value since.
The statute also caps reimbursement at the property’s net value when it is divided. If the mortgage balance exceeds market value, there is no equity to reimburse from and the practical recovery is zero. If the equity is positive but smaller than your contribution, you receive only what equity is available. The cap applies to both subsection (b) claims against community property and subsection (c) claims against the other spouse’s separate property.1California Legislative Information. California Code FAM 2640 – Property Reimbursement Rights
Tracing the Money Back to a Separate Source
Everything turns on tracing. Separate property under California law includes anything you owned before the marriage, anything you received during the marriage by gift or inheritance, and the income those assets produced.3California Legislative Information. California Code FAM 770 – Separate Property of Married Person You have to connect that source to the dollars that landed in the property. Tracing sounds easy and often is not, especially when separate and community funds have been mixed in the same account for years.
California courts recognize two main methods. Direct tracing uses contemporaneous records, such as bank statements, deposit records, and transaction histories, to show that specific separate funds were in the account when a payment was made. Courts expect records created at or near the time of the transaction. After-the-fact explanations and vague recollections generally do not carry the burden.
The exhaustion method works differently. If you can show that community income during a given period was fully consumed by ordinary family expenses, then whatever funds remained in the account to make the purchase or payment must have been separate. It takes a careful accounting of community income against family spending, but it can rescue a claim when direct tracing is impossible due to commingling.
The burden is on the spouse seeking reimbursement. The court will not reconstruct your finances for you. Keeping inheritances and premarital funds in dedicated accounts from day one is far easier than piecing together the trail during a divorce.
Waivers That Give Up the Right
A spouse can waive Section 2640 reimbursement in writing, and prenuptial or postnuptial agreements are the common vehicles. A premarital agreement with a clause stating that separate contributions to community assets will not be reimbursed at divorce will be enforced.1California Legislative Information. California Code FAM 2640 – Property Reimbursement Rights
The statute also recognizes “a writing that has the effect of a waiver,” so the document does not need to carry the word “waiver.” A signed agreement that converts the contribution into a community gift can qualify. The intent to give up the right, though, has to be clear enough for a court to see it. A vague document assigning debt responsibility, for example, may not reach contributions already made.
For a subsection (c) claim against a spouse’s separate property, a transmutation under Section 852 also eliminates the reimbursement right. Simply adding your name to a title, without the express written declaration Section 852 requires, does not by itself transmute anything or wipe out your claim.2California Legislative Information. California Code FAM 852 – Transmutation of Property
Where Section 2640 Sits in the Divorce
California requires equal division of the community estate. Section 2640 reimbursements happen before that equal split. The court identifies the community property, subtracts valid Section 2640 claims, and then divides what remains fifty-fifty. A large separate contribution can meaningfully shift the overall outcome even though the community property itself is still halved.
A few boundaries are worth stating. Section 2640 does not entitle you to any share of appreciation. A $100,000 contribution to a home that later doubled in value still produces a $100,000 reimbursement; the appreciation belongs to the community estate and is split equally. The statute also does not touch separate property that was never put into community or spousal property. Those assets are simply confirmed as separate under the usual rules and are not divided at all.