The Land Use Change Tax is 10 percent
RSA 79-A assesses qualifying open space land at its current use value rather than market value, and RSA 79-A:7 charges a land use change tax when the land is changed to a non-qualifying use. The rate is 10 percent of the full and true value of the land subject to the change, determined without regard to current use value and without any municipal or county equalization factor. That is 10 percent of market value, not 10 percent of the tax savings, and it is in addition to the ordinary property tax. It is due when the use changes, and it falls on whoever owns the land at that moment.