There are two bills issued per year; the first bill is an estimate based on one half of the previous year's tax. This bill is mailed out near the end of May and is usually due July 1st every year. The State of New Hampshire Department of Revenue Administration sets the tax rate for the year in the fall. The final bill is calculated using the new tax rate multiplied by your property's assessed value as of April 1st, less any payments made on the first bill. The second bill is mailed by the end of October and is usually due December 1st each year. Partial payments on property tax accounts are always accepted.
It is the property owner's responsibility to forward the tax bill to their bank or mortgage company for payment if their taxes are held in escrow.