Okay, real talk for a second. If you’re a small business owner or self-employed and you just found out there’s another tax deadline coming up in September, I get the panic. You’re not alone, and no, the IRS isn’t just inventing new ways to bug you.

Let’s break this down like I would if we were grabbing coffee.

So what even are estimated taxes?

If you’re self-employed, an LLC owner, a freelancer, or basically anyone who doesn’t have taxes automatically withheld from a paycheck, the IRS still wants their cut — just on a schedule. Instead of waiting until April, you’re expected to pay estimated taxes four times a year: April, June, September, and January.

That September 15 deadline? That’s Q3. It covers income you earned from June through August.

Why does this catch so many people off guard?

Honestly, because nobody tells you about it when you start a business. You’re focused on clients, sales, keeping the lights on — and estimated taxes just aren’t top of mind until suddenly there’s a form due and a payment expected.

The other reason people get blindsided is that business picked up. Maybe Q2 was slower and now Q3 is booming. Great news for your bank account, but it also means your tax liability just went up, and if you didn’t adjust your estimate, you could be paying more than you planned — or even facing a penalty for underpaying.

How do you figure out what to pay?

Here’s the simple version:

• Look at your net income (income minus business expenses) for the quarter
• Estimate your tax rate based on your bracket, self-employment tax, and any state obligations
• Pay that amount by the deadline

If your income has been inconsistent this year, don’t just copy last quarter’s payment. Take a real look at what you’ve actually made since June.

What happens if you don’t pay it?

The IRS charges an underpayment penalty, calculated based on how much you owed and how late the payment was. It’s not catastrophic, but it’s an unnecessary cost that’s completely avoidable with a little bit of planning.

If you haven’t looked at your numbers since your last filing, now’s the time. Pull up your books, see what you’ve earned since June, and get a realistic picture before the 15th sneaks up on you.

And if just reading this made your stomach drop a little — that’s usually a sign your bookkeeping needs a second look, not just your taxes. Clean, up-to-date books make this whole process about ten times less stressful, because the numbers are already right there waiting for you instead of buried in three different bank accounts.

If you want a second set of eyes on where you stand before September 15, we’re  happy to help you figure it out before it becomes a scramble.