California security deposit calculator (AB 12)

Start from the one-month cap

AB 12 caps deposits at 1 month of rent for California residential rentals.

• Furnishing the unit does not raise the cap. AB 12 repealed the old two-month furnished limit.

Check the small-landlord exception

If you own 2 or fewer residential rental properties with 4 or fewer total dwelling units, the cap is 2 months.

• The exception does not apply if the prospective tenant is a service member.

Enter the monthly rent

Multiply the applicable cap (in months) by the monthly rent to get the maximum deposit in dollars.

California AB 12 (2023): Security Deposit Limit

AB 12 reduces the maximum security deposit for most California rentals from two months to one month, whether or not the unit is furnished. The small-landlord exception allows up to two months for landlords who own two or fewer residential rental properties with four or fewer total dwelling units, unless the tenant is a service member. This calculator is for informational purposes only. Consult a licensed attorney to confirm your obligations.

Track deposits and move-out math in one place

LeaseRooster holds the deposit on record, guides the move-out process, and generates an itemized statement tied to the condition report and lease.