Title 26 › Subtitle Subtitle F— - Procedure and Administration › Chapter CHAPTER 63— - ASSESSMENT › Subchapter Subchapter C— - Treatment of Partnerships › Part PART III— - PROCEDURE › § 6235
Adjustments to a partnership’s tax return must usually be made within set time limits. The deadline is the later of: three years after the latest of when the return was filed, the return’s due date, or when the partnership filed an administrative adjustment request (AAR); 270 days (plus any agreed extension) after everything needed for an imputed underpayment is sent in (per section 6225(c)); or 330 days (plus any agreed extension) after a notice of proposed partnership adjustment (per section 6231(a)(2)). The partnership and the IRS can agree in writing to extend the deadline before it ends. Exceptions: there is no time limit for false or fraudulent returns made to evade tax or for returns not filed at all; if the partnership omits certain income amounts the period is six years instead of three; returns the IRS signs for the partnership under section 6020(b) aren’t treated as the partnership’s return; special timing rules apply when the partnership must report information under sections 6501(c)(8) or 6501(c)(10).
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Internal Revenue Code — Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 6235
Title 26 — Internal Revenue Code
Last Updated
Apr 6, 2026
Release point: 119-73