When property taxes are due in Prince George's County, MD — plus the official payment portal and what happens if you're late.
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…until 2nd semiannual — December 31, 2026
Double-check this with Prince George's County before you pay.
We checked these dates against the county's own schedule on October 18, 2026, and we try to keep them current — but counties do change dates, and we can fall behind.
If this page and the county disagree, the county is right: check the official schedule, then tell us so we can fix it.
Instalment
Due date
Notes
Annual or 1st semiannual
September 30, 2026
Full-year payment or first half for principal residences.
2nd semiannual
December 31, 2026
Second half for principal-residence accounts only.
On a $400,000 purchase in Prince George's County, MD, property tax comes to about $4,456 a year — roughly $371 a month — at this county's effective rate of 1.11%.
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Effective rate 1.11% = this county's median owner-occupied tax bill ($4,510, ACS 2022 5-year estimate) divided by the typical home value at the time ($404,828, Zillow, 2022-12-31). Exemptions the seller holds — homestead, senior, veteran — usually do not transfer with the deed, so a new purchase can run above this figure. The county assessor sets the assessed value; this is an estimate, not a quote.
If you pay late
Interest and penalty accrue at 1.67% per month from October 1 (or January 1 for the second half), and unpaid liens are sold at the May tax sale.
Tax year July 1 to June 30, paid annually or in two equal semiannual installments for principal residences. If a due date lands on a weekend or public holiday, most counties move it to the next business day — check the county's own notice before relying on the shift.
By post: mail a cheque to the treasurer's office; the postmark date usually counts, not the arrival date.
In person: the treasurer's office during business hours; bring your bill or parcel number.
Mortgage escrow: if your taxes are escrowed, the servicer pays — you still owe the difference if your escrow is short.
Common questions
When are property taxes due in Prince George's County, MD?
Annual or 1st semiannual: September 30, 2026. 2nd semiannual: December 31, 2026.
What happens if I pay late in Prince George's County?
Interest and penalty accrue at 1.67% per month from October 1 (or January 1 for the second half), and unpaid liens are sold at the May tax sale.
How do I pay Prince George's County property tax?
Pay online through taxinquiry.princegeorgescountymd.gov, the county's own payment portal, or by post or in person at the treasurer's office.
Is the Prince George's County deadline the same every year?
Tax year July 1 to June 30, paid annually or in two equal semiannual installments for principal residences. Counties shift dates when billing is delayed, so confirm against the county source linked on this page.
How much is property tax on a $400,000 house in Prince George's County, MD?
About $4,456 a year, or $371 a month, at this county's effective rate of 1.11%. That rate is the county's median owner-occupied tax bill ($4,510) divided by the typical home value ($404,828). A seller's homestead or senior exemption usually does not transfer, so a new purchase can cost more.
What if I can't pay in full?
Most counties offer instalment plans or partial payment — ask the treasurer before the due date, not after. Once the bill is delinquent the options shrink and the fees start.
Does a late payment affect my mortgage?
Unpaid property tax is a lien on the property in most states, which your servicer may pay and then bill you for, with fees. It does not disappear.
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We try to keep every date current — but please double-check it with your county before you rely on it. CountyTaxDates is an independent reference, not a government agency. Each page shows the date we last checked it against the county's own schedule, and counties move deadlines, add instalments and grant extensions we may not have caught yet. If this page and your county disagree, your county is right. Confirm on the official site linked on every page before you pay or budget around a date, and tell us if something is out of date. Nothing here is tax, legal or financial advice.