43 C.F.R. § 2806.25
(a) One-time payment option for existing perpetual grants. If you have a perpetual grant and the land your grant encumbers is being transferred out of Federal ownership, you may choose to make a one-time rental payment. The BLM will determine the one-time payment for a perpetual grant by dividing the current annual rent for the subject property by an overall capitalization rate calculated from market data, where the overall capitalization rate is the difference between a market yield rate and a percent annual rent increase as described in the formula in paragraphs (a)(1), (2), and (3) of this section. The formula for this calculation is: One-time Rental Payment = Annual Rent/ (Y−CR), where:
(1) Annual Rent = Current Annual Rent Applicable to the Subject Property from the Per Acre Rent Schedule; (2) Y = Yield Rate from the Per Acre Rent Schedule (5.27 percent); and (3) CR = Annual Percent Change in Rent as Determined by the Most Recent 10-Year Average of the difference in the IPD-GDP Index from January of one year to January of the following year.
(d) When no acceptable market information is available and no appraisal report has been completed for the land transfer action or when the BLM requests it, you must:
[73 FR 65072, Oct. 31, 2008]