Your Down Payment Comes Back at What You Put In, Not What It Grew Into
Program and regulatory figures verified October 10, 2026. Details change; confirm your scenario with us.
This is the number most often wrong in a California buyout conversation, and it is wrong in the direction that makes people over-estimate what they are owed.
★★ What counts as a contribution
Fam. Code § 2640(a) defines it, and the definition is narrower than people expect:
"'Contributions to the acquisition of property'… include downpayments, payments for improvements, and payments that reduce the principal of a loan used to finance the purchase or improvement of the property but do not include payments of interest on the loan or payments made for maintenance, insurance, or taxation of the property."
★★★ Read the exclusions again, because they are most of a mortgage payment. The interest portion does not count. Neither do property taxes, insurance or maintenance. Only the principal portion counts, plus downpayments and improvements.
★★ Which means "I paid the mortgage for six years out of my separate money" is not, by itself, a six-years-of-payments claim. It is a claim to the principal component of those payments, and in the early years of an amortising loan the principal component is the small part.
★★★ And the sentence that changes the arithmetic
"The amount reimbursed shall be without interest or adjustment for change in monetary values and may not exceed the net value of the property at the time of the division."
★★★ Without adjustment for change in monetary values. A separate-property down payment of, say, $60,000 made twenty years ago is reimbursed as $60,000. Not sixty thousand grown with the house. Not sixty thousand indexed for inflation. Sixty thousand.
★★ People routinely arrive believing their down payment entitles them to the proportion of today's equity that it represented at purchase. The statute does not say that. ★ There is also a ceiling: the reimbursement cannot exceed the net value of the property at division, which matters where a home has lost value or is heavily encumbered.
★★ How the right is lost
§ 2640(b) makes the reimbursement automatic "unless a party has made a written waiver of the right to reimbursement or has signed a writing that has the effect of a waiver."
★★ That second limb is broader than a document headed "waiver". A writing can have the effect of one. ★★★ Which is a reason to have counsel look at what you are signing, and a reason we are not going to tell you whether something you already signed had that effect. That is a legal question and we are a lender.
★ Tracing is the practical obstacle
The reimbursement runs "to the extent the party traces the contributions to a separate property source." Tracing is an evidentiary exercise: statements, closing documents, the paper trail from the separate source into the purchase.
★★ The practical consequence, and it is the most useful thing on this page: the documents that prove it are old. A twenty-year-old closing statement and the account history behind the down payment are exactly the records people no longer have. If you may have a § 2640 claim, start looking for that paperwork now, not when someone asks for it.
★★ Why a lender is telling you this at all
Because the reimbursement comes off the top and the equal division runs on what is left, which changes the size of the buyout, and the buyout is the loan.
★★★ A buyout priced on the assumption that a down payment grew with the house is priced too high, and the loan it implies may not be approvable. We would rather work from the statute's arithmetic at the start than re-price a transaction after an underwriter looks at it. How the loan itself is classified.
★ Our lane
We are a lender. We have quoted § 2640 because the buyout number depends on it. We are not telling you whether you have a claim, what it is worth, whether anything you signed waived it, or how tracing will come out. That is for your attorney. We are not a law firm and we make no attorney referrals.
★ We also publish no Moore/Marsden, Epstein or Watts analysis, case law we did not read at a primary source this pass. The full omissions list.
Mike Certo, NMLS #260555. (480) 296-6513 · mcerto@cfmtg.com.
Frequently asked questions
Does a down payment grow with the house in a California divorce?
No. Family Code section 2640 provides that the amount reimbursed shall be without interest or adjustment for change in monetary values. A separate-property down payment made many years ago is reimbursed at the amount contributed, not at a share of current equity.What payments count as a separate property contribution in California?
Section 2640(a) includes downpayments, payments for improvements and payments that reduce the principal of the loan, and expressly excludes payments of interest on the loan and payments for maintenance, insurance or taxation of the property.Is there a cap on section 2640 reimbursement?
Yes. The reimbursement may not exceed the net value of the property at the time of the division, which matters where a home has fallen in value or is heavily encumbered.Can a section 2640 reimbursement be waived?
Section 2640(b) makes the reimbursement apply unless the party has made a written waiver of the right to reimbursement or has signed a writing that has the effect of a waiver. Whether a particular document had that effect is a legal question for your attorney, not for a lender.Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content about mortgage financing during and after a divorce. Not a loan commitment, and not legal, tax or financial advice. Cornerstone First Mortgage is a lender; it is not a law firm, does not represent any party to a dissolution, does not make attorney referrals, and takes no position on how property should be divided. California property-division rules are set by the Family Code and applied by the courts; the reassessment exclusion in Revenue and Taxation Code section 63 is administered by county assessors. Agency requirements described here are Fannie Mae Selling Guide provisions current as of the date shown and are subject to change and to lender overlays. Housing market figures describe the twelve months to August 2026 and are not a forecast. All loans are subject to borrower, property and program qualification.