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St. Mary's County, Maryland
Est. 1637
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Office Status: Normal
Employee Status: Normal
Employee Information

Tax Bill Lookup

2026 TAX SALE ONLINE AUCTION MARCH 6, 2026 10:00 AM
https://www.stmaryscountymd.gov/Treasurer/TaxSale/

Last day to pay online February 20, 2026
Cash payments are accepted in our office until March 5, 2026 at 4:30 pm

Tax Sale Timeline
February 1, 2026 -- Additional interest added to 2024 delinquent accounts
February 6, 2026 -- Tax Sale List is published online and in SOMD News
March 1, 2026 -- Additional interest added to 2024 delinquent accounts

Lookup Directly by Account Number

Search by Name or Address

New Owners, Please note the account ownership information is updated on our website annually. We receive our tax file from the State Department of Assessments and Taxation (SDAT) at the start of the tax year on July 1st. It is best to use the address or parcel number to locate your account.

If you need further assistance, please contact the St. Mary’s County Treasurer’s Office at (301) 475-4200 extension 3300.

St. Mary's County Public Water and Sewer bills are managed by St. Mary's County Metropolitan Commission (MetCom). In accordance with Chapter 113-14.H of the code of St. Mary's County, unpaid water and sewer bills, service charges, all penalties and late charges are first liens against the property. For more information visit www.metcom.org or email MetCom customer service at billing@metcom.org

MetCom water and sewer accounts are subject to tax sale based on the following legislation and guidelines. St. Mary's County Treasurer's Office includes these accounts in our annual tax sale.

  1. Maryland Annotated Code Section 14-810
  2. St. Mary's County Code of Public Laws Chapter 113

Additional Links and Resources

Taxes - Real Property

Taxes - Personal Property

Tax Credit Programs and Exemptions

General Information