S-Corp Late Filing Penalties and the First-Time Abate Fix

Elena Carter

Picture this —it's a chilly, damp Tuesday morning in November, and your client, Mark Davis, the owner of Summit Trail Consulting, Inc., is on the phone. He's not just stressed, he- he is in a complete, total panic. He just opened an envelope from the IRS containing Notice CP162A, and the number staring back at him is seven thousand, one hundred and forty dollars. Mark is practically shouting, "Elena, we are a pass-through S corporation! We don't owe any corporate-level income tax! How is the IRS charging us over seven grand for being late when there is literally zero tax liability?"

Elena Carter

I think- I think almost every practitioner has heard some version of this exact plea. And- and here's the thing: Summit Trail Consulting is a tiny S corporation with just four shareholders. Their 2025 Form 1120-S was due on March 16th, 2026—since the fifteenth was a Sunday—but because of a transition between CPAs, they didn't file a Form 7004 extension. They ended up filing the return on October 15th, 2026, which was exactly seven months late.

Elena Carter

So, where does that seven-thousand-dollar penalty actually come from? Let's, um, let's break down the compounding math under Internal Revenue Code Section 6699. For returns due after December 31st, 2025, the late-filing penalty applies to S corporations that fail to file a timely or complete Form 1120-S, and the rate is a staggering two hundred and fifty-five dollars per shareholder, per month. And- and that is key—it's per shareholder, per month, up to a maximum of twelve months. And the IRS calculates any fraction of a month as a full month. So, for Summit Trail, March 17th to October 15th triggers a full seven months of penalties. If you do the math: two hundred and fifty-five dollars, multiplied by four shareholders, multiplied by seven months, and boom. There's your seven thousand, one hundred and forty dollars.

Elena Carter

Now, when practitioners see this, their first instinct is often to look for an easy way out. And this is where a really, really dangerous trap comes into play. I see so many folks in online tax forums suggesting, "Oh, just write a letter citing Revenue Procedure 84-35! It says if you have fewer than ten partners, you're exempt from late-filing penalties!" Please, do not do this. Let me repeat: do not do this. Revenue Procedure 84-35 applies *strictly* to small partnerships under Section 6698. There is zero, and I mean absolutely zero, statutory or legislative equivalence for S corporations under Section 6699. If you send a protest letter citing 84-35 for an S-corp, the IRS will immediately reject it, and frankly, you've just wasted your client's time and damaged your own credibility.

Elena Carter

So then, what about standard "reasonable cause" arguments? You know, the classic excuses. Mark tells me, "Well, the old CPA promised they filed the extension, but they forgot!" Or, "My accounting manager quit in February, so we were totally short-staffed!" Well, under the supreme court ruling in *United States v. Boyle*, those arguments are going to fall completely flat. The Court made it clear that filing a tax return—or an extension—is a non-delegable duty. You can't blame your CPA. And as for the short-staffed accounting manager? A Form 7004 extension requires no financial records at all to file. It takes two minutes. So, the IRS is going to say a seven-month delay was not reasonable. It- it feels like a dead end, right? But it's not.

Elena Carter

This is where we, as practitioners, have to shift our strategy entirely. Instead of fighting a losing battle on "reasonable cause" under *Boyle*, we need to look at the IRS's own administrative handbook. If you look at the Internal Revenue Manual, specifically IRM Section 20.1.1.3.3.2.1, there is a beautiful little mechanism called the First-Time Abate, or FTA. And yes, despite what some might think, failure to file penalties under Section 6699(a)(1) *are* fully eligible for this administrative waiver.

Elena Carter

This is an incredibly powerful tool because it completely bypasses the need for an excuse. The IRS doesn't care if the dog ate the files or if your CPA went on a cruise. The administrative waiver is based purely on the taxpayer's history of compliance.

Elena Carter

But before you promise your client a clean slate, you have to verify their compliance on the Business Master File, or BMF. For S corporations, this is MFT 02. To qualify for FTA, the S corporation must have a clean three-year lookback period. That means for Summit Trail's 2025 notice, we have to look back at tax years 2022, 2023, and 2024. They must have filed all required returns on time—or with valid extensions—and have no prior late-filing penalties assessed. If they had a penalty in 2023, even if it was abated, they won't qualify for FTA in 2025. Also, the taxpayer must be current on all other filing requirements. And because S corporations generally don't owe corporate-level tax, the usual FTA requirement of having "paid the tax due" is satisfied automatically.

Elena Carter

So, how do we actually execute this for Mark? Here is your step-by-step practitioner action plan. First, secure a Form 2848 Power of Attorney. Make sure you list Form 1120-S and specifically cover the years 2022 through 2025. This satisfies your Circular 230 diligence standards. Second, pull the BMF Account Transcripts for those lookback years. You want to verify that there is no Transaction Code 460—which would show an extension was filed—and confirm there are no TC 240 late-filing penalties on record.

Elena Carter

Once you've confirmed they have a clean three-year record, do not write a long, drawn-out letter. Just pick up the phone. Call the IRS Practitioner Priority Service line. Tell the agent, "I am representing Summit Trail Consulting, and we are requesting a verbal First-Time Abate administrative waiver for the 2025 Form 1120-S late-filing penalty." The agent will run the account through their automated Reasonable Cause Assistant, the RCA. If the lookback is clean, they can approve the abatement right then and there. You'll get verbal confirmation on the spot, followed by IRS Letter 3503C in the mail.

Elena Carter

The universal principle here, and this is mandated right in IRM 20.1.1.3, is that administrative waivers must *always* be considered and applied *before* you even attempt to argue reasonable cause. It's cleaner, it's faster, and it has a near-hundred-percent success rate if the client qualifies.

Elena Carter

So, let's wrap this up with a quick checklist for your next S-corp penalty notice. First, verify the notice number is indeed CP162A. Second, pull the BMF transcripts for the three-year lookback period to confirm eligibility. Third, do not, under any circumstances, cite Revenue Procedure 84-35. Fourth, use the PPS line to get immediate, verbal FTA relief. And finally, work with your client to set up secure, electronic tracking for their Form 7004 filings so they never end up in this situation again. Alright, that is it for today. Let's keep our clients compliant and our representation sharp. Talk to you soon.