RSA 80:75 — Payment of Subsequent Tax. –

I. For purposes of this section, "subsequent tax" shall mean any tax assessed upon the real estate subsequent to that for which it was liened by a municipality, a county or the state. The municipality, county, or state as holder of the tax lien may pay to the collector any subsequent tax after the final installment of said tax for that year is delinquent, and the collector shall, within 30 days after such payment of subsequent tax, notify the register of deeds of the payment, giving the date and the amount of such payment and the name of the municipality, county, or state so paying, together with the date of the tax lien, the name of the person taxed, and a description of the property subject to tax lien as shown in the report recorded in the registry of deeds. The collector of taxes shall receive $2 for such notice to the register of deeds of the subsequent payment plus $2 to be paid to the register of deeds.
II. The municipality, county or state as holder of the tax lien, within 30 days of payment of the subsequent tax, shall notify the current owner, if known, or the person as shown in the report of tax lien by certified mail. At the same time, the holder of the tax lien shall personally, or by certified mail, notify any mortgagee who was previously notified relative to the execution of the tax lien of his payment of the subsequent tax. The lienholder paying the subsequent tax shall receive $10 for each notice to the current owner, if known, or the person as shown in the report of tax lien, together with expenses for sending the notice by certified mail, and a $10 fee for each notice sent or given to a mortgagee, together with expenses for sending the notice by certified mail.
III. When a municipality is the lienholder and the municipality pays a subsequent tax and the selectmen direct the collector of taxes, as agent of the municipality, to give such notice of said payment to any owner and to any mortgagee as provided above, the collector of taxes shall receive the same fees provided for the lienholder for his service. The amount of subsequent taxes paid, together with interest on such taxes at the rate of 14 percent per annum from the date of payment shall, in addition to the tax lien amount at the time of execution with interest and costs, be paid by the person making redemption.