2026 fiscal calendar
Know the tax date before it becomes a penalty date.
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The verified record below separates published figures from dates that require confirmation with Maryland State Department of Assessments and Taxation — Harford County Assessments; Harford County Revenue Collections.
Effective rate
FY2025–2026 published county rate $0.9779 + Maryland state rate $0.1120 = $1.0899 per $100 assessed value; FY2026–2027 rate was not separately verified in the reviewed official source, and municipal differentials apply.
Statement mailing
July 1, 2026; Harford County states property-tax bills are mailed July 1 each year.
Payment deadline
2026 tax year: property owners have until September 30, 2026 to pay without additional costs; unpaid properties are prepared for the county tax sale after April 1, 2027.
Valuation protest
Within 45 days of the date on the Maryland SDAT Notice of Assessment; Harford County states assessment appeals go to the Property Tax Assessment Appeals Board.
Critical payment warning
Do not assume a grace period.
The verified county record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat the published payment deadline as a hard operational date and retain your receipt or confirmation number.
Read the calendar in order
From assessment to collection
1. Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
2. Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
3. Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.