Security Deposit Interest Calculator — Maryland
Calculate the interest you owe a Maryland tenant on their security deposit, using the state's own rule and statute.
This rate is published each year — confirm the current year's figure with the cited source before relying on it.
Interest owed to tenant
$60.86
- Time held
- 2.03 yrs
- Total to return
- $2,060.86
Maryland rule
Deposits of $50 or more earn simple interest at the greater of 1.5% per year or the 1-year U.S. Treasury (Constant Maturity) yield set each January, accruing monthly, payable only if held at least 6 months. The DHCD publishes the rate and a calculator.
When paid: At deposit return; simple interest accrues at monthly intervals.
Last verified June 12, 2026.
Not legal advice. LandlordKit provides general informational tools, not legal advice. Landlord-tenant laws change and vary by city and county. Verify the cited statute and consult a licensed attorney before acting on any result.
How Maryland treats security deposit interest
Deposits of $50 or more earn simple interest at the greater of 1.5% per year or the 1-year U.S. Treasury (Constant Maturity) yield set each January, accruing monthly, payable only if held at least 6 months. The DHCD publishes the rate and a calculator.
When it must be paid: At deposit return; simple interest accrues at monthly intervals.
Worked example
Example: a $1,500.00 deposit held for 2 years at 1.50% per year. Simple interest owed ≈ $45.00, so the landlord returns about $1,545.00 in total. (Rates can change year to year — confirm the current figure.)Last verified June 12, 2026.
Maryland security deposit obligations
Even where interest isn't required, Maryland still regulates the deposit itself: you generally must return it within 45 days of move-out (Md. Code, Real Prop. § 8-203). You must include an itemized statement of any deductions. Up to 3x plus fees for bad faith.
Open the Maryland deposit return tracker to confirm the deadline and build an itemized deductions statement.
Maryland security deposit interest FAQ
Do landlords have to pay interest on security deposits in Maryland?+
Yes. Deposits of $50 or more earn simple interest at the greater of 1.5% per year or the 1-year U.S. Treasury (Constant Maturity) yield set each January, accruing monthly, payable only if held at least 6 months. The DHCD publishes the rate and a calculator. (Md. Code, Real Property § 8-203).
How is security deposit interest calculated in Maryland?+
Interest is simple (non-compounded). Multiply the deposit by the annual rate and by the number of years held. Interest only begins after the deposit has been held 6 months.
When must Maryland landlords pay the interest to the tenant?+
At deposit return; simple interest accrues at monthly intervals.
When must a Maryland landlord return the security deposit?+
Generally within 45 days of move-out (Md. Code, Real Prop. § 8-203). Use the LandlordKit deposit return tracker for the exact rule and an itemized statement.
Is the LandlordKit security deposit interest calculator free?+
Yes — it's completely free, requires no signup, and you can download a PDF interest statement to give your tenant.
Other states
Need the full picture? See the security deposit interest calculator for all states.