How to File a Late S Corp Election: Rev. Proc. 2013-30 Gives You 3 Years and 75 Days.

A contractor forms an LLC in January 2026, tells his accountant he wants S corporation treatment, and each of them assumes the other filed the paperwork. By July, payroll is running and quarterly estimates are going in, but there is no CP261 acceptance letter from the IRS anywhere, because Form 2553 never went in. The March deadline is four months gone. Here is how to file a late S corp election under Rev. Proc. 2013-30, keep the January 1 effective date, and pay the IRS nothing for the fix.

Under IRC §1362(b)(1), an S election effective for the current tax year has to be made during the preceding tax year or by the 15th day of the third month of the year it covers. For an existing calendar-year business that means March 15, which fell on a Sunday in 2026, so timely filings ran through Monday, March 16, 2026. A brand-new entity gets 2 months and 15 days from the day its first tax year begins, which is the earliest date it has shareholders, acquires assets, or starts doing business. Miss the date and the statute pushes the election to the following year: the corporation spends the intended year as a C corporation, or the LLC stays under its default classification, unless relief puts the election back where it was supposed to be.

Rev. Proc. 2013-30 is the IRS's standing offer to treat a late election as timely without a ruling request. Four things have to be true. The entity intended to be an S corporation as of the effective date on line E. It fails to qualify solely because Form 2553 was not filed on time, not because of an ineligible shareholder or a second class of stock. There is reasonable cause for the miss, and the entity acted diligently once it was discovered. And the completed form is filed within 3 years and 75 days of that intended effective date, which for a January 1, 2026 election means March 17, 2029.

The mechanics matter as much as the requirements. Complete Form 2553 with the intended effective date on line E and write "FILED PURSUANT TO REV. PROC. 2013-30" across the top of page 1. The reasonable cause explanation goes in item I or on an attached statement. Every person who has been a shareholder at any time since the effective date signs the consent in column K, and for a late election that consent includes the representation, made under penalties of perjury, that they reported their income on all affected returns consistent with S corporation status. Then mail or fax the form to the service center in the instructions; Utah entities file with Ogden. If the corporation has never filed a return, there is a second door: attach the Form 2553 to the first Form 1120-S, write "INCLUDES LATE ELECTION(S) FILED PURSUANT TO REV. PROC. 2013-30" in the top margin, and file within the same 3-year-and-75-day window. Acceptance comes back as a CP261 notice, usually within 60 days. Keep the fax confirmation until it does.

The bar here is lower than in penalty cases. The statement needs two elements: why the election was not filed on time, and what the entity did to fix it once the failure surfaced. The fact patterns the IRS sees constantly are exactly the ones you would expect. The owner did not know an election had to be filed. The accountant or attorney who was supposed to file it did not. The form was prepared and signed but never mailed. Any of these, told plainly with dates, works. What actually sinks filings is the diligence half: discovering the problem in July and filing in December reads badly. File within days of finding the gap and say so in the statement.

An LLC electing S status is technically making two elections: to be classified as an association taxable as a corporation, and then to be an S corporation. Rev. Proc. 2013-30 handles both with the single late Form 2553. Under Treas. Reg. §301.7701-3(c)(1)(v)(C), an eligible entity that elects S status is deemed to have elected corporate classification, so no Form 8832 is required, as long as the LLC meets the small business corporation requirements of IRC §1361(b) as of the effective date. There is also a quiet safety feature in that structure: if the S election fails, the LLC falls back to its default classification as a disregarded entity or partnership rather than getting stranded as a C corporation.

Whether the retroactive date is worth the paperwork is a numbers question, and the numbers are usually not close. The savings engine is the same one behind the S corp Medicare tax planning that drives most elections: profit above a reasonable salary escapes self-employment tax.

Rev. Proc. 2013-30 keeps one exception open with no time limit, and it describes a specific taxpayer: the corporation that has been filing Forms 1120-S all along and never knew the election was missing. The conditions are strict. The entity is a corporation not also seeking late classification relief, the failure is solely the unfiled Form 2553, the corporation and every shareholder reported consistently with S status for the first year and every year since, at least 6 months have passed since the first Form 1120-S was filed, and the IRS did not notify anyone of a problem with the S status within 6 months of that first timely filed return. Fall outside both the 3-year-and-75-day window and that exception, and the only path left is a private letter ruling under IRC §1362(b)(5), where the user fee alone is $43,700 under Rev. Proc. 2026-1. Finding the missing election in year two is a paperwork problem. Finding it in year five can be a five-figure one.

One housekeeping note once the CP261 arrives: a retroactive election means the owner should have been on payroll from the effective date, so a mid-year fix usually involves catching up wages before December 31 and setting up the fringe benefit items that only work for S corporations, like the home office accountable plan reimbursement.