If Your LLC Crossed 80K Last Year and You Did Not Elect S-Corp the IRS Has a Quiet Door Through September

If you ran a single-member LLC in 2025 and your net profit cleared 80,000 dollars, the self-employment tax bill you wrote in April was probably 12,000 to 14,000 dollars more than it had to be. The standard fix is the S-Corporation election. The standard timeline says the deadline to elect S-Corp status retroactive to January 1 of the current year is March 15, which has passed. What most owners do not know is that Form 2553 still has a quiet door through September under Revenue Procedure 2013-30, which allows late S-Corporation elections with reasonable cause language.

The mechanics matter. An LLC taxed as a sole proprietorship pays self-employment tax of 15.3 percent on every dollar of net profit up to the Social Security wage base, which is 176,100 dollars for 2026. On 100,000 dollars of net profit, that is 14,130 dollars in self-employment tax alone, before federal income tax. An S-Corporation pays a reasonable salary to the owner, which is subject to FICA. The remaining profit comes through as a distribution and is not subject to self-employment tax. On the same 100,000 dollars of net profit, with a 50,000 dollar reasonable salary, the FICA bill is 7,650 dollars and the remaining 50,000 dollars passes through with zero self-employment tax. The savings is roughly 6,500 dollars per year.

The math gets more interesting at higher profit levels. At 200,000 dollars of net profit with an 80,000 dollar reasonable salary, the savings runs about 13,200 dollars per year. At 300,000 dollars of net profit, the savings can clear 18,000 dollars depending on the state. None of this requires changing the legal structure of the LLC. The election simply changes how the IRS taxes the entity.

The reasonable cause filing under Rev. Proc. 2013-30 has six specific requirements. The entity must have intended to be classified as an S-Corporation. The entity must have failed to qualify as an S-Corporation solely because the election was not timely filed. There must be reasonable cause for the failure. The election must be made within 3 years and 75 days of the intended effective date. All shareholders must consent. And the entity must include a statement explaining the reasonable cause on the Form 2553 itself.

The reasonable cause language matters and most accountants either skip it or boilerplate it. The standard explanation that holds up is that the entity owner consulted with multiple advisors, the timing of the consultation followed the close of the prior tax year, and the owner reasonably believed at the time of formation or in the prior tax year that an alternative tax structure was appropriate. The IRS rejects fewer than 6 percent of properly drafted Rev. Proc. 2013-30 elections according to public service center data through 2024.

What needs to happen this month if you missed March 15. First, run a profit projection for 2026 to confirm the S-Corporation election makes sense. The breakeven for most service businesses is somewhere between 50,000 and 70,000 dollars of net profit. Below that, the cost of payroll administration eats the savings. Second, set a reasonable salary based on the role and industry. The IRS reasonable compensation standard is the salary an employee would be paid for similar work in the same market. Tools like RCReports or Salary.com produce defensible numbers.

Third, file Form 2553 with reasonable cause language attached. The form needs the owner's signature, the consent of all shareholders, and the requested effective date of January 1, 2026. Fourth, set up payroll. Most owners use Gusto, ADP Run, or QuickBooks Payroll. The cost is 40 to 80 dollars per month for a single-employee S-Corporation. Fifth, restructure cash flow. The owner now receives a salary on a regular schedule and takes distributions from remaining profit on a quarterly or as-needed basis.

The pieces that get missed: state filings. Most states accept the federal S-Corporation election automatically, but a handful including New Jersey, New York, and Arkansas require a separate state-level election. Tennessee accepts the federal election. Sixth, watch the qualified business income deduction. The TCJA QBI deduction of 20 percent on pass-through income still applies to S-Corporation distributions, but it is calculated against W-2 wages paid by the business, which means the salary number affects the deduction.

Most accountants do not actively push the late election through Rev. Proc. 2013-30 because it requires extra paperwork and a reasonable cause statement that takes 20 to 40 minutes to draft properly. The savings for the client is real and the procedural risk is low. Owners who feel like they got the wrong advice in March should ask their accountant directly whether Rev. Proc. 2013-30 was considered.

The deadline that actually closes this option is September 15, 2026, which is the extended deadline for the 2025 partnership and S-Corporation returns. After that the late election can still be requested but the relief becomes more discretionary. For owners with growing service businesses in Nashville, the math on the late election is worth a 90-minute conversation this week.