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By using the site you accept that it is general information, current to the sources read on 17 October 2026.

Information only

The pages describe publicly available federal rules. They are not tax, legal, or accounting advice. They are not a filing position. Official text on IRS.gov controls if a page here disagrees with it. This site is not the IRS.

Estimates

The checker is an estimate. Partnership and S corporation dates for 2027 are labelled expected. Calendar-year Form 1120 dates of 15 April 2027 and 15 October 2027 are expected too. The $260 per-person amount is the Rev. Proc. 2025-32 figure for Form 1065 and Form 1120-S returns filed in 2027. Check the current IRS amount. Whether a Form 7004 extension moves a Schedule K-1 date is not verified. State dates are not provided. You are responsible for what you file.

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