# 26 U.S.C. § 6303: Notice and demand for tax

Source: OLRC release point 119-134 <https://uscode.house.gov/us/usc/119-134/t26/s6303>. Cite pinpoints as 26 U.S.C. § 6303(a)(1).

## § 6303(a) General rule

Where it is not otherwise provided by this title, the Secretary shall, as soon as practicable, and within 60 days, after the making of an assessment of a tax pursuant to section 6203, give notice to each person liable for the unpaid tax, stating the amount and demanding payment thereof. Such notice shall be left at the dwelling or usual place of business of such person, or shall be sent by mail to such person’s last known address.

## § 6303(b) Assessment prior to last date for payment

**§ 6303(b)(1) In general.** Except where the Secretary believes collection would be jeopardized by delay, if any tax is assessed prior to the last date prescribed for payment of such tax, payment of such tax shall not be demanded under subsection (a) until after such date.

**§ 6303(b)(2) Postponement by reason of disaster, significant fire, or terroristic or military actions.** For purposes of paragraph (1), the last date prescribed for payment of any tax shall be determined after taking into account any period disregarded under section 7508A.

## Regulations

- [Treas. Reg. § 301.6303-1](/26/reg/301.6303-1.md): Notice and demand for tax. (interprets § 6303)

## Final rules

- [66 FR 2817](https://www.federalregister.gov/documents/2001/01/12/01-623/definition-of-last-known-address) (2001): Definition of Last Known Address

## Leading cases

- [Kim v. United States, 632 F.3d 713 (D.C. Cir. 2011)](https://www.courtlistener.com/opinion/184066/kim-v-united-states/)
- [Jersey Shore State Bank v. United States, 479 U.S. 442 (1987)](https://www.courtlistener.com/opinion/111791/jersey-shore-state-bank-v-united-states/)
- [In re Resyn Corp., 945 F.2d 1279 (3rd Cir. 1991)](https://www.courtlistener.com/opinion/569201/in-the-matter-of-resyn-corporation-resyn-corporation-v-united-states/)

## Connections

Cites: § 6203 Method of assessment; § 7508A Authority to postpone certain deadlines by reason of Federally declared disaster, significant fire, or terroristic or military actions

Cited by: § 6305 Collection of certain liability; § 6656 Failure to make deposit of taxes

Derived from: 1939 § 3655(a)

## Amendments

- 1954-08-16: [Act Aug. 16, 1954, ch. 736](/26/act/1954-ch736.md), 68A Stat. 775
- 1976-10-04: [Pub. L. 94-455](/26/act/94-455.md), 90 Stat. 1834
- 2025-12-26: [Pub. L. 119-64](/26/act/119-64.md), 139 Stat. 1984