U.S. Code / Title 26 — Internal Revenue Code / Subtitle A—Income Taxes / Chapter 1—Normal Taxes and Surtaxes / Subchapter G—Corporations Used to Avoid Income…Title 26PartPart I—Corporations Improperly Accumulating SurplusContents§ 531. Imposition of accumulated earnings tax§ 532. Corporations subject to accumulated earnings tax§ 533. Evidence of purpose to avoid income tax§ 534. Burden of proof§ 535. Accumulated taxable income§ 536. Income not placed on annual basis§ 537. Reasonable needs of the business