Quick answerNew Hampshire sells tax deeds for unpaid property taxes. Redemption: 2 years from execution of the real estate tax lien — redemption is available at any time before the tax collector gives a tax deed (RSA 80:69, 80:76); if the municipality refuses the deed, redemption can continue indefinitely with interest accruing Sales: No statewide investor sale date; towns/cities sell tax-deeded property after deeding, as authorized, as needed year-round. The older tax-sale procedure (RSA 80:19–80:42) is still on the books in some municipalities Governing law: N.H. RSA Title V, Chapter 80 (esp. §§ 80:58–80:89 for the tax lien procedure; §§ 80:19–80:42 for the older tax sale procedure).