Tax Billing

The Town of Andover issues tax bills on a quarterly basis. The billing cycle begins on July 1st each year. Subsequent bills are issued October 1st, January 1st and April 1st. On occasion, tax bills will be issued up to one week prior to these dates. This practice gives you more time to pay the bill and does not change any due dates.

Due Dates


Tax bills are due August 1st, November 1st, February 1st and May 1st. If any of these dates fall on a weekend or a holiday, tax bills are due the next business day.

Preliminary Bills


The July 1st and October 1st bills are considered “preliminary bills.” The amount on each bill is one quarter of the net amount paid in taxes for the previous fiscal year. This net amount would be the original tax less any abatements or exemptions granted in the prior year.

Critical Bill


The January 1st bill is the critical bill in terms of appeal. This bill is based on the new valuations and the new tax rate. Typically the bill is higher than the first two preliminary bills. All property appeals are filed on the basis of this tax bill.