Late S-Corp Election for a Consulting Firm: What's Still Possible

The S-corp election deadline is March 15 for an existing calendar-year entity — or within 75 days of formation for a new one. If you form your consulting LLC or corporation and want the S-corp tax treatment for the current year, you must file Form 2553 by that deadline.

Miss the window, and you’re a disregarded LLC or C-corp for that tax year, paying SE tax on all of your consulting income with no salary/distribution split.

But “missed the deadline” isn’t always the end of the story. The IRS has established relief procedures for late S-corp elections, and they’re granted more routinely than most people expect.

What Is the Normal S-Corp Election Deadline?

For an existing entity (calendar year): Form 2553 must be filed by March 15 to be effective for the current year.

For a new entity: Form 2553 must be filed within 75 days of the date the entity was formed (or within 75 days of the first day of the tax year you want the election to take effect).

Example: You form an LLC on September 15, 2024. You want S-corp treatment for all of 2024. You need to file Form 2553 by November 29, 2024 (75 days after September 15). You also need the entity to have met S-corp eligibility requirements since formation (not more than 100 shareholders, only U.S. residents, one class of stock).

Miss that window, and your September-formed LLC is taxed as a disregarded entity through December 31, 2024, paying SE tax on all net income.

What IRS Relief Procedures Exist for a Late S-Corp Election?

The IRS provides two paths to get a retroactive S-corp election granted after the deadline passes.

Revenue Procedure 2013-30 (Late Relief)

This is the primary mechanism for late S-corp elections. Under Rev. Proc. 2013-30, the IRS will grant relief and treat the election as timely if:

1. The entity has reasonable cause for missing the deadline. This can be: unawareness of the deadline, reliance on an advisor who failed to file, administrative oversight, or other reasonable grounds. The standard is not strict.

2. The entity has not filed a return inconsistent with S-corp status. If you’ve already filed a partnership return (Form 1065) or C-corp return (Form 1120) for the year in question, relief is generally not available through this procedure.

3. All shareholders have reported income consistently with S-corp status. If you’ve been reporting income as if you had an S-corp (no SE tax, salary + distribution structure) and just forgot to file the form, this criterion is met. If you’ve been operating as a sole proprietor filing Schedule C with full SE tax, it’s not met.

4. The request is made within 3 years and 75 days of the intended effective date.

How to request: Attach a completed Form 2553 to the first Form 1120-S you file, with a statement explaining the reasonable cause. The IRS reviews the request and, in most cases with clear reasonable cause, accepts the late election.

What this costs: Your CPA’s time to prepare the relief request and first S-corp return — typically $500–$2,000 in additional professional fees.

Private Letter Ruling (PLR)

For situations that don’t clearly qualify for Rev. Proc. 2013-30 relief — typically because returns were filed inconsistently — a Private Letter Ruling is the alternative. You file a formal request with the IRS National Office, pay a user fee ($6,900–$38,000 depending on the situation), and receive a binding IRS determination.

PLRs take 3–6 months and are expensive. For most solo consulting firm owners, this is not the right path. Rev. Proc. 2013-30 relief covers the vast majority of missed elections.

When Does Late S-Corp Election Relief Make Economic Sense?

The late S-corp election saves you SE tax — but only for the year(s) where you lacked the election. Whether pursuing relief is worth the cost depends on how much you save.

The payroll tax savings for a consulting firm with $200,000 in net income, $80,000 salary:

• SE tax as sole proprietor: ~$26,000
• Payroll taxes with S-corp: ~$12,240
• Annual savings: ~$13,760

If you missed the election for the current year, the retroactive election may save you $13,760 in SE tax. The cost to pursue Rev. Proc. 2013-30 relief is typically $1,000–$2,500. It’s worth it.

If you’re in a low-income year ($60,000–$70,000 net), the SE tax savings are $5,000–$7,000. The break-even calculation is tighter, and you need to weigh whether the S-corp structure will continue to save money going forward.

What Do You Need to Do for the Year You Missed the Election?

Even if you successfully obtain a retroactive S-corp election, you’ll need to:

1. Set up payroll retroactively. The IRS requires you to have paid yourself a reasonable salary from the effective date. Running retroactive payroll typically means running a large lump-sum payroll payment to catch up on the missed salary payments, with all required FICA taxes.

2. File an amended or late S-corp return (Form 1120-S). The S-corp needs to file its own return for the year, with K-1s flowing to your personal return.

3. Amend your personal return. If you already filed a personal return reporting the income as SE income (Schedule C), you’ll need to amend it to reflect K-1 income instead.

This is a meaningful administrative undertaking — but if the SE tax savings are $10,000+, the cost is justified.

How Can You Avoid Missing the S-Corp Election Next Time?

The two most common reasons consulting firm owners miss the S-corp election:

1. They form the entity in year one and don’t know the election exists. The LLC formation process doesn’t prompt you to consider S-corp election — you have to know to ask.

2. They know about the election but miss the March 15 deadline. Tax season distracts everyone, and the election form isn’t tied to the return filing deadline.

The fix: When forming a consulting LLC, ask your CPA in the same conversation whether the S-corp election makes sense and if so, file Form 2553 at the same time you file the formation documents.

If you’re already an existing LLC without S-corp status and you expect to exceed $80,000 in net consulting income this year, review the S-corp election analysis and file the election before March 15.

This article is educational and reflects general tax principles. Consult a licensed CPA for advice specific to your situation.