April is here — and if you just filed your taxes and called it a day, I need you to stop. Because right now, in Q2, is exactly when small business owners make the tax mistakes that cost them thousands of dollars at the end of the year. After 20+ years of bookkeeping and working with hundreds of business owners, I’ve seen the same errors play out over and over again. Let’s fix that.
Mistake #1: Skipping Your Q2 Estimated Tax Payment
The IRS requires most self-employed business owners to pay estimated taxes four times a year. Q2’s deadline falls on June 16, 2026. Missing it — or underpaying — means penalties and interest stacked on top of whatever you already owe. Don’t wait until year-end to figure out what you owe. Run a simple profit projection now and set aside at least 25–30% of your net profit for taxes. If your business had a rough Q1, this is your chance to recalibrate before the hole gets deeper.
Mistake #2: Not Knowing About the SALT Deduction Change
Big news for 2026: the state and local tax (SALT) deduction cap increased from $10,000 to $40,000. This affects real estate investors, high-income business owners, and anyone in a high-tax state. If your bookkeeper or accountant hasn’t talked to you about this change, bring it up. The $40,000 cap rises by 1% annually through 2029, so 2026 is the year to make the most of it. Make sure your books are clean and your state tax payments are accurately recorded — that’s the only way you’ll capture this deduction correctly.
Mistake #3: Ignoring the QBI Deduction — Which Is Now Permanent
If your business is structured as a sole proprietorship, partnership, S-corp, or LLC, you may qualify for the Qualified Business Income (QBI) deduction — up to 20% of your qualified business income. In 2026, this deduction became permanent, and there’s now a minimum $400 deduction for anyone with at least $1,000 in QBI. But here’s the catch: you can only take this deduction if your books are accurate and your income is correctly categorized. Messy books = missed deductions. It really is that simple.
Mistake #4: Implementing Nothing After Tax Planning Season
Here’s the one I see constantly: business owners talk to their accountant in March, agree on a strategy, and then… do nothing about it until December. Tax planning fails at the implementation stage almost every time. Q2 is your action window. Revisit those deductions you planned to take — home office, vehicle, equipment, retirement contributions — and make sure they’re being tracked and documented properly month by month. Your bookkeeper should be supporting this, not just reconciling after the fact. If your bookkeeping isn’t connected to your tax strategy, you’re leaving money behind every quarter.
Ready to get your books in order? Work with us at www.balanceoperationsco.com