Idaho Code § 63-1703
For the purposes of appraisal, assessment and taxation under the provisions of this chapter, all forest lands in parcels of five (5) or more acres but less than five thousand (5,000), whether contiguous or not, as long as such parcels are held in common ownership, must be designated by the forest landowner to be subject to the provisions of either subsection (a) or (b) of this section. A forest landowner cannot have parcels designated under the provisions of both subsections (a) and (b) of this section at one time. If the forest landowner fails to make a designation, his forest lands shall be subject to appraisal, assessment and taxation under the provisions of section 63-1702, Idaho Code. Once a designation is made by the forest landowner, such designation must remain in effect until the designation period expires, unless the forest lands are transferred to another owner using a different taxing category; in such case, the taxing category of the transferred forest lands shall be the same as that maintained by the new owner.
A forest landowner may change the designation of all forest lands in common ownership at the end of any designation period, subject to the recapture of any deferred taxes due as a result of such change. After January 1 and by December 31 of the tenth year of each designation period, the forest landowner must notify the county assessor of any change in forest land designation. Failure to notify the county assessor will result in the continuation of the landowner's present designation until the end of the next designation period.
Any substantial change in the use of forest lands not conforming with the definition of "forest land" in section 63-1701, Idaho Code, during such ten (10) year period under the designations made in subsection (a) or (b) of this section shall be reported by the landowner to the county assessor within thirty (30) days of the change in use. Upon notification of the change in use or a determination by the assessor that the land no longer meets the definition of "forest land" in section 63-1701, Idaho Code, the assessor shall appraise, assess and tax those acres as provided by applicable laws and rules. Failure to notify the assessor of the change in use when forest lands have been designated as subject to the provisions of subsection (a) or (b) of this section shall cause forfeiture of such designation and cause that property to be appraised, assessed and taxed as provided in section 63-1702, Idaho Code. If there are deferred taxes subject to recapture as a result of loss of forest land designation, the assessor shall take no action to supply deferred tax amounts to the county treasurer before the taxpayer has been notified and provided an opportunity to appeal the decision of the assessor to the county board of equalization. Said appeal shall be considered timely if filed with the county clerk within thirty (30) days of receipt of the notification of the decision of the assessor. Upon the filing of a timely appeal, the taxpayer shall be given at least ten (10) days' notice of the date and location of the next meeting of the county board of equalization at which the appeal shall be considered. Once the appeal is considered, the county board of equalization shall notify the appellant of the decision, which is further appealable pursuant to section 63-511, Idaho Code.
Forest lands designated for assessment pursuant to the provisions of section 63-1706, Idaho Code, shall be subject to the recapture of deferred taxes upon removal of such designation, a substantial change in use, or ownership transfer, except that there shall be no recapture initiated upon ownership transfer of forest lands designated as subject to the provisions of section 63-1706, Idaho Code, to a landowner with forest lands already designated as subject to the provisions of section 63-1706, Idaho Code, prior to the transfer, or who so designates his lands to be subject to the provisions of section 63-1706, Idaho Code. In the event payment is offered or made, it shall be accepted by the county treasurer and applied in the manner of payment of other property tax.
The dollar amount of deferred taxes subject to recapture shall be determined by the county assessor by applying current tax levies against the current values that would have been in effect if the lands were subject to appraisal and assessment during the current year under the provisions of section 63-1705, Idaho Code, if there has been a change in ownership or a removal of designation, or section 63-1702, Idaho Code, if there has been a change in use with no change in ownership, which amount shall be multiplied by the number of years that the lands have been subject to the designation under section 63-1706, Idaho Code. The amount of the deferred tax shall accrue through designation periods, up to a maximum of ten (10) years, and shall apply to the most recent ten (10) years in which the parcel has been designated under the provisions of section 63-1706, Idaho Code. A credit shall be allowed for taxes actually paid under the provisions of section 63-1706, Idaho Code, for an identical ten (10) year period, up to the total amount of the deferred taxes. All deferred amounts shall be a lien against the land. Deferred tax amounts shall be calculated by the county assessor on forms prescribed by the state tax commission. Deferred tax amounts shall be supplied by the county assessor to the county treasurer by May 15 of the year following conveyance or within thirty (30) days of the lapsing or conclusion of the appeals procedure provided in this section with regard to the removal of the forest land designation, or of learning of a change in use. All deferred tax amounts shall be due and payable to the county treasurer on demand and shall become delinquent if not paid by the demand due date specified by the county treasurer on the forms prescribed by the state tax commission. If the deferred tax is not paid as provided in this section, the payment becomes delinquent and subject to late charges and interest in the amounts provided in sections 63-201(12) and 63-1001, Idaho Code, and subject to collection in the manner as set forth in chapter 10, title 63, Idaho Code. Estimated deferred tax amounts may be held by the county treasurer in a tax anticipation account from the date of conveyance until June 1 of the year following conveyance.
The county treasurer shall cause the deferred taxes and any penalty and interest paid pursuant to the provisions of this section to be apportioned to the various taxing authorities within which the property subject to the tax is located in the same manner as property taxes.
Idaho Code § 63-1703