How Trustees Characterize and Trace Assets After Death
Tracing is the process of proving where an asset’s funds actually came from, so a trustee can determine whether it’s separate or community property. Most people who agree to serve as trustee expect to pay bills, file paperwork, and write checks to beneficiaries. Few expect to become an amateur forensic accountant, tracing thirty-year-old bank deposits to figure out whether a stock account is community property or one spouse’s separate inheritance. But that’s often exactly the job, and it has to happen before a single distribution goes out.
Start with the presumption, then look for the exception
California Family Code section 760 sets the default: property acquired during marriage is community property. That’s the starting presumption a trustee works from for nearly everything in a decedent’s estate, and it’s a strong one. A judge doesn’t need to be convinced an asset is community property. It already is, unless someone proves otherwise.
The exceptions are separate property under Family Code section 770: anything owned before marriage, anything received by gift or inheritance during marriage, and anything bought entirely with separate property funds. If someone wants to claim an asset falls into one of these exceptions rather than the default, they carry the burden of proving it. That someone is usually a surviving spouse trying to keep an asset out of the trust’s distributable estate, or a beneficiary trying to argue the opposite, that an asset the surviving spouse claims as separate is actually community property they’re entitled to share in.
Tracing: following the money back to its source
Tracing is the actual work of proving separate property status. If a beneficiary claims a brokerage account is separate property because it grew from an inheritance received in 1998, the trustee needs documentation connecting the dots: the original inheritance (a probate distribution, an estate closing statement, a gift letter), the deposit into the account, and an unbroken paper trail showing that account was never mixed with community property funds in the twenty-plus years since.
California courts recognize two main tracing methods. Direct tracing shows that specific separate funds were used for a specific purchase, supported by records like bank statements and deposit slips. Say a spouse inherited $80,000 in 2005, deposited it into a standalone account the same week, and used that exact account six months later to buy a $75,000 stock position with no other deposits in between. That’s a clean, direct trace. The family expenditures method presumes community funds were used to pay ordinary living expenses, which can help show that separate funds sitting in a mixed account were preserved rather than spent down, because the household’s day-to-day bills were being paid from the community income, not the inheritance. Family Code section 2640 addresses reimbursement for separate property contributions to community assets, which comes up constantly with down payments on a home: if one spouse used $60,000 of separate inheritance money as a down payment on a house titled to both spouses, section 2640 can entitle that spouse’s estate to reimbursement of the $60,000 (without interest or appreciation) before the rest of the equity is split as community property.
The problem trustees run into constantly: the records don’t exist anymore, or the account has been touched too many times to trace cleanly. A separate inheritance deposited into a joint checking account that also received both spouses’ paychecks for fifteen years is, in most cases, hopelessly commingled, meaning no one can reliably pull the separate dollars back out. We cover what happens in that scenario in our companion post on commingled assets in trust administration.
Who actually carries the burden of proof
This matters practically, not just academically. If a beneficiary asserts an asset is separate property and wants it treated differently than the community estate, that beneficiary needs to bring the documentation. A trustee isn’t obligated to accept a bare assertion, an “I just know it was Mom’s money” isn’t evidence. At the same time, a trustee who ignores credible evidence of separate property status and distributes assets incorrectly anyway can face a breach of fiduciary duty claim later, from the very people the trustee was trying to keep things moving for.
This puts trustees in an uncomfortable middle position: not an advocate for any one beneficiary’s characterization theory, but not free to guess either. When the evidence is genuinely ambiguous, that’s when trustees should get counsel involved before finalizing distributions, not after a beneficiary has already cashed a check and spent it.
Practical issues that come up again and again
A few patterns show up in nearly every trust administration involving a long marriage.
The house
Bought before marriage by one spouse, then the mortgage got paid down for twenty years with community income. That’s a classic mixed-character asset requiring a Family Code section 2640 reimbursement calculation, not a simple separate-or-community label. The house itself may stay that spouse’s separate property, but the community estate (and by extension, the other spouse’s heirs) may be owed reimbursement for the mortgage principal paid down with community funds, and possibly a share of the appreciation attributable to that paydown depending on the facts.
Retirement accounts
An IRA that existed before the marriage, then received contributions during the marriage. Each contribution has its own character, which means the account itself is often part separate and part community, and the trustee may need a year-by-year contribution history from the plan administrator to sort it out rather than treating the account as a single asset with a single label.
Businesses
A separate property business that grew substantially through one spouse’s labor during the marriage can create a community property interest in that growth, even though the underlying business stays separate. This calculation, using either the Pereira or Van Camp approach depending on the facts, is genuinely complicated and usually needs an expert, typically a forensic accountant familiar with California community property law, not just a general business appraiser.
Gifted or inherited funds deposited into joint accounts
The most common commingling problem, and often the hardest to unwind years later, especially when the couple has moved money between several accounts over the decades and the original bank no longer has records going back that far.
What a trustee should actually do
Pull every document available before assuming anything: deeds, account statements going back to account opening where possible, the marriage date, and any prior estate planning documents that might reference separate property, such as an old will or a schedule attached to an earlier trust. Where the record is incomplete, get professional help rather than making a unilateral call that a beneficiary could challenge later. And document the reasoning behind every characterization decision in the trust file, because “I assumed” is not a defense in a later accounting dispute. If a dispute does arise, the trustee’s contemporaneous notes showing what was reviewed and why a particular call was made are often what separates a defensible decision from an expensive one.
The honest caveat
Sometimes the records simply don’t exist, and no amount of diligence recreates them. A trustee can do everything right, hire a forensic accountant, request forty-year-old bank records that the bank no longer has, and still end up with a genuinely ambiguous answer. In that situation the community property presumption usually controls by default, because the burden was on the person claiming separate property, and an inability to meet that burden isn’t the trustee’s failure, it’s just how the evidence came out. That can feel unsatisfying to a beneficiary who’s confident about family history they can’t document, but “I remember it that way” doesn’t move the burden of proof.
Talk to a real California estate attorney
If you’re facing a trust with mixed or unclear property history, don’t guess your way through it. I’ll help you figure out what’s actually traceable, what isn’t, and how to document the decisions you make so the administration holds up if anyone asks questions later.
Talk to Eric Ridley is a free 60-minute consultation by phone or Zoom, anywhere in California. Or call (805) 244-5291. You’ll leave knowing where you stand, whether or not you hire me.
Related reading: Community property vs. separate property in trust administration · Commingled assets in trust administration · Spousal rights in California inheritance
Frequently asked questions
What does it mean to “trace” an asset in trust administration?
Tracing is the process of proving where an asset’s funds actually came from, to establish whether it’s separate or community property. It means connecting an original source, such as an inheritance, to a deposit, and then showing an unbroken paper trail proving the funds were never mixed with community property along the way.
Who has the burden of proving an asset is separate property?
California presumes property acquired during marriage is community property under Family Code section 760. Whoever claims an asset should be treated as separate property, usually a beneficiary or the surviving spouse, carries the burden of proving it with documentation. A trustee isn’t obligated to accept a bare assertion without evidence.
What are the two main tracing methods California courts recognize?
Direct tracing shows that specific separate funds were used for a specific purchase, supported by records like bank statements and deposit slips. The family expenditures method presumes community funds paid ordinary living expenses, which can help show that separate funds deposited into a joint account were preserved rather than spent down.
What happens when an asset is too commingled to trace?
If separate funds were mixed into a joint account that also received both spouses’ paychecks for years, the account is often treated as hopelessly commingled and community property, because no one can reliably reconstruct which dollars are which. Once tracing fails, the community property presumption generally controls the whole account.
What should a trustee do when the characterization evidence is genuinely unclear?
Pull every available document, including deeds, account statements, the marriage date, and prior estate planning records, before assuming anything. Where the record is incomplete, get counsel involved before finalizing distributions rather than after. Document the reasoning behind every characterization decision, because “I assumed” is not a defense in a later accounting dispute.
This is general information about California law, not legal advice for your situation.
Want a straight read on where you stand?
Talk to Eric. A free 30-minute call, no pitch. He’ll tell you where you’re exposed, what it would cost to fix, and what you can skip.
Talk to Eric