Leviticus 27:18
18 but if he dedicates his field after the jubilee, then the priest shall ucalculate the price according to the years that remain until the year of jubilee, and a deduction shall be made from the valuation.
Leviticus 27:23
23 athen the priest shall calculate the amount of the valuation for it up to the year of jubilee, and the man shall give the valuation on that day as a holy gift to the Lord.