U.S. Code / Title 26 — Internal Revenue Code / Subtitle F—Procedure and Administration / Chapter 66—LimitationsTitle 26SubchapterSubchapter B—Limitations on Credit or RefundContents§ 6511. Limitations on credit or refund§ 6512. Limitations in case of petition to Tax Court§ 6513. Time return deemed filed and tax considered paid§ 6514. Credits or refunds after period of limitation§ 6515. Cross references