H.R. 1246 would allow Indian tribes to lease their land held in trust for a term of up to 99 years with approval of the Department of the Interior (DOI). Under current law, the tribes cannot lease their trust land for more than 25 years, with an option to renew the lease once for another 25 years. Any proceeds from leases would accrue to the tribes. Using information from DOI, CBO estimates that the cost to implement H.R. 1246 would be insignificant; any spending would be subject to the availability of appropriated funds.