Quick answer
For a calendar-year S corporation election intended to start January 1, 2026, the ordinary Form 2553 timing rule points to the 2-month-and-15-day window in the IRS instructions, with weekend or holiday treatment controlled by IRS rules. Treat the exact filing date as an IRS-source check, not a Tax Paperwork calculation.
Sources and limits
This page is for orientation and not tax, legal, accounting, filing, payment, mailing, faxing, upload, confirmation, or representation advice. IRS.gov and current official instructions control Form 2553 mechanics.
What to check next
Open the current IRS Form 2553 instructions, verify the effective date, tax year, shareholder consent, mailing or fax mechanics, and any weekend or holiday rollover before sending anything.
Tax Paperwork can help organize a narrow browser-local draft preview where supported. You remain responsible for checking official sources, getting professional advice when needed, and keeping customer-controlled submission records.
Common risk
A common mistake is treating a draft, checklist, payment receipt, upload receipt, mailing receipt, or third-party summary as IRS confirmation. Keep records, but verify official channel rules and follow-up through IRS.gov, official correspondence, or qualified professional help.
Official source starting points
Last updated June 24, 2026.