Texas Disciplinary Rule of Professional Conduct 1.14 requires client and third-party funds to be held separate from the firm's own money, and complete records of those funds to be maintained and kept for five years after the representation ends. That sounds administrative until a fee dispute, an audit inquiry, or a grievance arrives — at which point the records either exist or they don't.
In practice, compliance comes down to one monthly exercise: the three-way reconciliation. Your trust bank statement balance, your trust register (book) balance, and the sum of all individual client ledger balances must agree. When they agree, you can prove no client's funds were used for another's. When they don't, the gap is the problem — and it usually means one matter is quietly funding another.
Most solo and small-firm attorneys we meet aren't cutting corners. They're carrying a docket, and the trust register drifts because reconciling it properly takes a specific process nobody at the firm owns. That's the piece we take over: the ledgers, the reconciliation, the documentation, and the monthly flag list of anything that needs an attorney decision.