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Security Deposit Interest Calculator

Some states require landlords to pay tenants interest on a held security deposit. Enter your deposit, rate, and hold period to estimate what's owed.

Deposit

$
%
mo

Results

Interest owed to tenant
$30.00
Avg. per month
$2.50
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How This Calculator Works

Simple interest is calculated as deposit amount × annual rate × years held — the standard method most state security-deposit-interest statutes specify, rather than compounding.

Not every state requires this. Only some states and cities require landlords to pay interest on held deposits, and the required rate varies — some peg it to a published bank rate that changes annually rather than a fixed percentage.

Check your state's actual requirement before relying on this estimate for a real payout, since the rate you're required to pay (if any) is set by your state or local law, not by this calculator.

Frequently Asked Questions

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Look up your state's actual security deposit rules on the state laws hub.