Security deposits are not your money. They belong to the tenant until you either apply them to unpaid rent and damages or return them at move-out. That distinction drives how you record the funds and how you handle the cash.

On the balance sheet, a security deposit is a liability. When a tenant pays $3,000 at move-in, you debit cash and credit a liability account called Security Deposits Payable or Tenant Security Deposits. Nothing touches the income statement. You haven’t earned anything. You’ve taken custody of money that belongs to someone else.

Track deposits by tenant and by property. If you manage 40 units across 15 buildings, you need to know exactly whose money is sitting where. Sub-accounts or a subsidiary ledger keyed to each tenant makes this manageable. QuickBooks, Yardi, and AppFolio all handle deposit tracking properly when configured for it, and setting it up correctly from day one is part of solid property management accounting.

Keep deposits separate from operating cash. California doesn’t require a formal trust account the way some states do, but commingling creates real risk. If your operating account gets levied or frozen, tenant deposit money should not be exposed. Most professional property managers hold deposits in a dedicated account, and certain jurisdictions have interest rules for specific rental types.

Know the current deposit limits. California changed the rules under AB 12, effective July 2024. Most landlords can now collect a maximum of one month’s rent as a security deposit regardless of whether the unit is furnished. Small landlords who own no more than two residential properties totaling four or fewer units can still collect up to two months’ rent. The older 2x unfurnished and 3x furnished rule no longer applies to most operators, even though many property managers still reference it.

When a tenant moves out, you have 21 calendar days to either return the deposit in full or provide an itemized statement of deductions with the remaining balance. Allowed deductions under Civil Code 1950.5 include unpaid rent, damage beyond normal wear and tear, cleaning needed to return the unit to its move-in condition, and repair of items the tenant is responsible for. Routine wear does not qualify. Repainting a sun-faded wall is different from repainting over scribbled drawings.

The accounting at move-out follows the facts. If you return the full $3,000, you debit Security Deposits Payable and credit cash. The liability clears. If you keep $800 for cleaning and carpet repair, you debit Security Deposits Payable $3,000, credit cash $2,200, and credit the appropriate expense reimbursement or income accounts for the retained amount. The retained portion only becomes income at the point deductions are finalized and documented.

A few mistakes cause most of the pain in this area. Recording deposits as rental income inflates revenue, creates tax problems, and produces false operating results. Mixing deposits with operating funds makes reconciliation messy and creates legal exposure. Failing to track by tenant means you can’t answer basic questions at move-out. Missing the 21-day deadline can entitle the tenant to the full deposit back plus up to twice the amount in statutory damages if a court finds bad faith.

If you’re managing properties across the San Gabriel Valley and want this handled correctly at the ledger level, our bookkeeping services in Pasadena are built around exactly this kind of real estate accounting. Dennis’s background is in property management and development accounting, so the liability tracking, tenant ledgers, and move-out entries get done the way auditors and owners expect to see them.