As the summer sun blazes on and the third quarter of the year reaches its midpoint, many business owners and self-employed professionals shift their focus to sales, staffing, and operations. But if you want to stay ahead of the IRS — and avoid a painful tax bill come April — now is the perfect time to take action on smart, strategic Q3 tax moves.
At Dynamic Tax and Accounting, we help small business owners, entrepreneurs, and individuals across New York, New Jersey, and nationwide turn Q3 into a strategic window for tax savings, compliance, and financial planning. In this blog, we’ll walk you through the most important moves to make before September 30, so you can reduce your 2025 tax liability while there’s still time.
Q3 (July 1 – September 30) is a critical turning point for tax planning. It’s the last full quarter before year-end financial decisions must be finalized and is the perfect time to:
Proactive planning now ensures you won’t be scrambling when Q4 arrives.
If you’re a sole proprietor, freelancer, S-Corp owner, or independent contractor, the IRS requires you to pay quarterly estimated taxes — and the Q3 payment is due on September 16, 2025.
New York and New Jersey also require estimated state tax payments. Check local filing rules to avoid penalties.
One of the most immediate ways to reduce taxable income is by making strategic business purchases that qualify as tax-deductible expenses.
These purchases, if made before the end of Q3, can be tracked, deducted, and depreciated more effectively.
IRS Section 179 Deduction Guidelines
If you’re currently operating as a sole proprietor or single-member LLC, now is the time to evaluate whether an S-Corporation election could save you in taxes for next year.
To be eligible for 2025, you must act before the March 15, 2026 deadline, but the groundwork should begin now.
Retirement plans offer huge tax advantages — both in reducing current taxable income and building long-term wealth. Q3 is the right time to assess:
| Plan Type | Max 2025 Contribution | Ideal For |
|---|---|---|
| SEP IRA | Up to $69,000 | Self-employed, small businesses |
| Solo 401(k) | Up to $69,000 (plus catch-up) | Solopreneurs with no full-time employees |
| Simple IRA | $16,000 (plus match) | Businesses with <100 employees |
If you’re not yet contributing, opening a retirement plan before year-end ensures you qualify for full-year contributions.
Most small business owners wait until January to review their books — but doing it now puts you in control.
Running a mid-year Profit & Loss Statement with your accountant helps you catch red flags early and make adjustments that can lower your taxable income before year-end.
Paying a spouse or child through your business can unlock tax advantages, including:
Make sure wages are reasonable, documented, and actually earned. Also, consult with your tax advisor to stay compliant with IRS rules.
If you drive for business or work from home, you’re eligible for valuable deductions:
Start or update your mileage logs and take photos of your workspace as documentation in case of audit.
If you’re paying contractors or employees, Q3 is your last chance to:
Misclassification can lead to IRS penalties and fines — don’t wait until December.
Clean books now = fewer headaches later. If you’re behind on reconciliations, Q3 is the time to:
This also helps ensure your year-end tax prep goes smoothly and prevents IRS red flags.
Finally, the most powerful Q3 tax move you can make is to meet with your accountant or tax advisor for a review.
At Dynamic Tax and Accounting, we offer customized Tax Strategy Sessions that include:
A 30-minute meeting could save you thousands in Q4 and beyond.
The third quarter isn’t just a checkpoint in your calendar — it’s a golden opportunity to take control of your taxes, improve your cash flow, and plan ahead with confidence. By acting now on the strategies outlined above, you can avoid costly mistakes, reduce your tax burden, and enter Q4 in a position of strength.
Let’s Get Your Taxes Done Right.
Call us at (646) 295-3811 or email admin@dynamicsrv.com to schedule a consultation with our expert tax team today.
