Suggested publish date: August 14, 2026 Slug: back-to-school-back-to-business-getting-ahead-of-the-fall-tax-deadlines Meta title: Fall Tax Deadlines & Extension Filing | Tax Resolution in Lehi, UT Meta description: September and October bring real deadlines. Tax Freedom Fighters, tax experts in Lehi, explain what’s due this fall and how to fix problems before year-end. Primary keywords: Tax Freedom Fighters, tax resolution, tax experts, Lehi
The buses are running again in Alpine School District, the mornings are cooler, and the year suddenly has a shape to it. August is when routines come back — and it’s the last comfortable month before the fall tax calendar gets serious.
Two deadlines are coming, and a third window is closing quietly behind them.
September 15: business returns and Q3 estimates
If your S corporation or partnership filed an extension in March, the extended return is due September 15. So is the third-quarter estimated tax payment for individuals and businesses.
Extended business returns matter more than their filers usually realize, because they feed the personal return. A partner or S-corp shareholder can’t finish a 1040 without a K-1, and a K-1 can’t be issued from books that aren’t closed. If your bookkeeping is three months behind, September 15 is not a deadline you back into — it’s a deadline you plan for in August.
Late filing penalties for partnerships and S corporations are assessed per partner or shareholder, per month. A four-owner business that files two months late is looking at a penalty that’s a genuine line item, and it has nothing to do with how much tax was owed. It’s purely a filing failure.
October 15: the individual extension deadline
An extension to file was never an extension to pay. If you filed for more time back in April and owed a balance, interest has been running since the original deadline and will keep running until it’s paid.
October 15 is the end of the road. After that, the failure-to-file penalty starts applying — and it accrues at roughly ten times the rate of the failure-to-pay penalty. This is the single most important thing our tax experts tell people who are tempted to hold a return back because they can’t pay: file anyway. Filing without paying is a much smaller problem than not filing at all.
If you can’t pay in full, file on time and then let’s talk about the options. Installment agreements, currently-not-collectible status, an offer in compromise for those who qualify — every one of those paths requires that your returns be filed first. Compliance is the entry ticket to every tax resolution program the IRS offers.
The window closing behind them: year-end planning
Here’s the part almost nobody thinks about in August. Most of the moves that actually reduce a tax bill have to happen during the tax year, not after it ends.
Retirement plan contributions and elections. Entity structure decisions. Timing of major equipment purchases. Deferring or accelerating income. Bunching charitable contributions. Reasonable compensation adjustments for S-corp owners. Harvesting losses. Every one of these has a December 31 wall, and most of them take weeks of lead time to execute properly.
By the time you’re sitting across from a preparer in March, the year is closed and the job is documentation, not strategy. Planning is a fall activity. Preparation is a spring one. People who confuse the two spend years wondering why their tax bill never changes.
Fall is also when collection activity picks up
There’s a rhythm to IRS enforcement. Notices generated over the summer mature into next-stage actions in the fall — liens, levies, and wage garnishments that land right as the holidays approach. We field more calls in November about frozen bank accounts than in any other month.
If you have unresolved balances, unfiled years, or a stack of letters you’ve been avoiding, August is the month to open them. Earlier intervention means more options, full stop. A notice of intent to levy has a response window. A federal tax lien can sometimes be prevented but is much harder to withdraw once filed. Timing is most of the leverage in this work.
What to bring us this month
- Any IRS or Utah State Tax Commission correspondence, opened or not
- Your year-to-date profit and loss, and last year’s return
- A list of years you know are unfiled
- Any major changes coming — a sale, a purchase, a new hire, a move
Tax Freedom Fighters has worked out of Lehi since 1992, and we’ve helped hundreds of Utah County individuals and business owners get from “I’m avoiding the mail” to “this is handled.” Our team includes CPAs, Certified Tax Preparers, and QuickBooks ProAdvisors, and we price flat-rate so you know the cost before we start.
We should be clear that outcomes depend on facts — eligibility for settlement programs is determined by the IRS based on your financial situation, not by how hard anyone advocates. What we can guarantee is that you’ll get an honest read on where you stand and experienced people handling the negotiation.
Call (801) 331-8038 or schedule a free consultation. We’re at 55 W Main St in Lehi, and September is closer than it looks.
55 W Main St, Lehi, UT 84043 | (801) 331-8038 | Members of NATP, ASTPS, and CTRS
This article is general information, not individualized tax advice. Your situation deserves a conversation.