How much can a landlord charge for a security deposit in Maryland?

One month's rent (two months only in a narrow utility-assistance case) (Md. Code, Real Property 8-203).

How long does a landlord have to return a security deposit in Maryland?

Within 45 days after the tenancy ends (Md. Code, Real Property 8-203).

Maryland security deposit law

The state rules a landlord in Maryland has to follow for a residential security deposit, from Md. Code, Real Property 8-203.

Maximum deposit: One month's rent (two months only in a narrow utility-assistance case).
Deadline to return it: Within 45 days after the tenancy ends.
Itemized deductions: Written list of damages claimed with an itemized statement of costs, sent by first-class mail within 45 days.
Interest on the deposit: Yes: simple interest at the greater of the 1-year U.S. Treasury rate or 1.5% a year, only if held 6 months or more and the deposit is $50 or more.
Penalty for wrongful withholding: Up to three times the amount withheld plus attorney fees if withheld without a reasonable basis; landlord loses the right to keep any for damages if the list is not sent.

Before you keep any part of a deposit

Compare the unit with the move-in inspection and photos. Normal wear and tear is generally not chargeable.
Keep receipts or written estimates for every deduction.
Send the return or the itemized list within the deadline above, to the tenant's forwarding address, and keep proof of mailing.

Working out the last month's rent? The prorated rent calculator does the partial-month math.

Source

Verification status: verified summary. Research date: November 5, 2026. Statute: Md. Code, Real Property 8-203. Source: mgaleg.maryland.gov.

General information, not legal advice. Cities and counties can add stricter rules, and laws change. Check the current statute or a local attorney before you act.

Other states: Maine · Massachusetts · all states

Last updated November 5, 2026.