If the economic interest in the property expires, terminates, or is abandoned before income has been derived from production (in the case of a lease bonus), or before the royalty has been recouped from production (in the case of an advanced royalty), the taxpayer is required to adjust the capital account by restoring any excess depletion deduction taken under the Engle rule and to include the excess in income in the year the expiration, termination, or abandonment occurs.4
1. IRC § 613A(d)(5).
2. Comm. v. Engle, 84-1 USTC ¶ 9134 (U.S. 1984).
3. Treas. Reg. § 1.613A-3(j)(2).