Security Deposit Interest California: Do Landlords Have to Pay It?

You paid a security deposit of $2,500 three years ago. Your landlord has been holding it the entire time. When you move out, do they owe you interest on that money?

The short answer for most California tenants: state law does not require it, but where you live matters more than you might expect.

What California State Law Says

California Civil Code § 1950.5, the main statute governing residential security deposits, does not require landlords to hold deposits in a separate interest-bearing account or to pay tenants any interest on the deposited funds. The state legislature has not enacted a statewide interest requirement for residential security deposits.

This contrasts with some other states — New York and New Jersey, for example, have statewide rules requiring landlords to deposit security funds in dedicated accounts and pass through at least some interest to tenants. California has no equivalent statewide mandate.

What California law does require is that deposits be returned (minus lawful deductions) within 21 calendar days of move-out, with an itemized accounting for any amounts withheld. The law is comprehensive on timelines, documentation, and deduction rules — but silent on interest accrual.

Cities That Do Require Interest on Security Deposits

Several California municipalities with strong tenant protection frameworks have enacted local ordinances requiring landlords to pay interest on security deposits. These ordinances generally apply to rent-controlled units or to all residential rentals within city limits, depending on the jurisdiction.

San Francisco has one of the more robust local requirements. Under the San Francisco Rent Ordinance, landlords of covered units are required to pay interest on security deposits annually. The applicable interest rate is set each year by the Rent Board — it has historically ranged between zero percent in low-rate environments and several percent in higher-rate years. The interest must be paid either as a direct payment to the tenant or as a credit toward rent, typically on the anniversary of the tenancy.

Los Angeles has also enacted security deposit interest requirements for covered residential units under the Los Angeles Rent Stabilization Ordinance (RSO). Landlords of RSO-covered properties must pay annual interest on deposits, with the rate set by the Housing Department.

Berkeley, Santa Monica, and West Hollywood similarly maintain local rent control ordinances that include security deposit interest requirements.

If you live — or lived — in a rent-controlled unit in any of these cities, check the relevant local rent board's website to verify the current interest rate and the payment schedule. If your landlord has not been paying annual interest as required, the accrued unpaid interest is part of what you are entitled to recover when you move out.

How to Check Whether Your Unit Is Covered

Most local security deposit interest requirements apply specifically to units covered by local rent control — which typically means multi-unit residential buildings built before a certain date (commonly 1979 in Los Angeles, for example) that are not exempt by owner-occupancy or condo conversion rules.

To verify whether your unit qualifies:

• Look up your address in your city's rent stabilization unit registry (most cities publish searchable databases)
• Contact the local Rent Board directly — they handle tenant inquiries
• Check the original terms of your lease for any mention of rent control status

Single-family homes, recently constructed units, and owner-occupied duplexes are frequently exempt from rent control and therefore from local deposit interest requirements, even in cities that have them.

Practical Impact at Move-Out

If local ordinance requires interest payments and your landlord has not paid them annually during your tenancy, that unpaid interest is a legitimate component of your move-out demand. Calculate the accrued amount — most rent boards publish historical rate tables that make this straightforward — and include it in your itemized accounting alongside the deposit principal.

For the majority of California tenants whose units are not covered by a local interest requirement, the more significant financial leverage at move-out lies elsewhere: in the 21-day return deadline, the AB 2801 photo documentation requirements, and the bad-faith penalty under Civil Code § 1950.5(l), which can add up to twice the original deposit amount to a court judgment if the landlord willfully violates the statute.

A landlord who held your $2,500 deposit and refuses to return it is potentially facing a $7,500 judgment — the deposit itself plus twice that amount in bad-faith penalties. That is the more consequential number for most tenants, independent of any interest calculation.

One More Thing to Check: Your Lease

Some leases — particularly in newer, purpose-built apartment complexes — include explicit provisions regarding whether the landlord will or will not pay interest on the deposit. While California state law doesn't require interest payments, a landlord can voluntarily agree to pay them in the lease contract.

If your lease contains such a clause and your landlord did not honor it, that breach of contract is independently enforceable alongside your Civil Code § 1950.5 rights. Include it in any demand letter you send.

If you're in the middle of a deposit dispute — whether over interest, illegal deductions, or a missed 21-day deadline — the California Security Deposit Recovery Guide walks through the complete recovery process, from the first demand letter through small claims court.