Security Deposit Interest Calculator

Several states require landlords to hold deposits in interest-bearing accounts and pay the tenant the interest earned (often annually or at move-out). Enter the deposit and tenancy dates — this calculator works out the interest owed year by year, with the math shown so both you and the tenant can verify it.

Not legal advice. Statutory rates change; verify your state's current rule before paying out. Preset rates below reflect well-known statutes (e.g., Massachusetts 5% simple annual; Maryland 3% simple annual); states with "actual rate" rules need your bank's real rate.