Texas Legal Glossary · Family Law

Commingling

Written and reviewed by Shane M. Boasberg, founder of SMB Law, PC · Licensed in Texas since 2003 · Updated October 2026

Definition: Commingling is the mixing of separate property with community property in a Texas marriage, usually in a shared account, so that the separate funds can be confirmed as separate only if their owner traces them by clear and convincing evidence.

Also called: mixed funds, tracing

What commingling means in Texas

Commingling happens when separate property and community property are blended so that they can no longer be told apart on the face of the records. The classic case is an inheritance deposited into the couple’s joint checking account, followed by years of paychecks in and bills out. The Family Code does not define the word, but it supplies the governing rule: under § 3.003, property on hand at divorce is presumed community, and the spouse claiming otherwise must prove separate character by clear and convincing evidence.

Commingling does not destroy separate property by itself. It makes the claim harder to prove. If the separate funds can be traced, they remain separate. If not, the presumption controls and the whole account is treated as community.

How it works in practice

Tracing is an accounting exercise built on statements, deposit slips, and closing documents. Texas courts have accepted several methods. The most common is the community out first approach, which presumes that withdrawals from a mixed account come from community funds first, leaving the separate balance intact as long as the account never dips below the separate amount. If the balance drops below that amount at any point, the separate claim is reduced to the low point.

In larger estates, a forensic accountant prepares the tracing schedule. The spouse resisting the claim attacks gaps in the records. Missing statements from a closed bank often decide the question.

Why it matters in your case

Commingling turns a simple characterization question into an evidence problem. The spouse with the separate claim pays for the tracing work and bears the risk if records are incomplete. Where tracing fails, the separate contribution may still support a reimbursement claim under § 3.402, but reimbursement is discretionary and rarely returns the full amount. We see the issue most often with premarital savings and inheritances.

Example

Marcus had $50,000 in savings before marrying Elena. He moved it into their joint account, where both deposited paychecks for nine years. At divorce the account holds $62,000. Marcus produces every statement showing the balance never fell below $50,000. Under the community out first method, $50,000 is traced as his separate property. Had the balance fallen to $12,000 in year four, his claim would be capped there.

This entry explains Texas law in general terms and is not legal advice for any specific situation. Statutes and case law change; the date above reflects the last review.