It’s September: Here’s Why Your Year-End Tax Planning Starts Now

It's easy to think of tax season as a January-through-April thing. But the moves that actually save you money almost always happen before December 31, not after. With a little over three months left in the year, now's the time to start thinking about 2026 instead of waiting for it to become 2025's problem.

Why September (Not December)

Waiting until the last week of December to think about taxes means you're reacting instead of planning. Most of the strategies that actually reduce a tax bill (deferring income, accelerating deductions, adjusting retirement contributions) take time to execute properly. Some require paperwork. Some require a full quarter of income data to even know if they're worth doing. Starting now gives you room to actually use the tools available instead of scrambling to make a decision on December 29.

What to Look at Before Year-End

1. Review your income picture so far.

Pull together what you've earned and what you expect through December. This tells you whether you're tracking toward a higher or lower bracket than expected, which shapes almost every other decision on this list.

2. Revisit your retirement contributions.

If you have a 401(k), SEP IRA, or solo 401(k), check where your contributions stand against the annual limit. Business owners with a SEP IRA in particular have more flexibility here since contributions can often be made up until the filing deadline, but knowing your numbers now avoids a rushed calculation in the spring.

3. Time your income and expenses deliberately.

If you're a cash-basis business, you may have some control over whether income lands in this year or next, and whether expenses get paid now or in January. This is worth a real conversation, not a guess, since it depends heavily on where your income is trending.

4. Check in on estimated tax payments.

If you've been paying quarterly estimates, make sure they're tracking with actual income rather than a stale projection from January. Underpayment penalties are avoidable with a mid-year correction.

5. Consider equipment or asset purchases.

If you've been planning to buy equipment, vehicles, or other business assets, the timing of that purchase can matter for depreciation. Worth reviewing before, not after, you make the purchase.

6. Look at charitable giving strategy.

If charitable giving is part of your financial picture, there are more ways to structure it than just writing a check in December. Bunching donations or using a donor-advised fund are worth understanding before the year closes out.

The Real Reason This Matters

None of these strategies work well as last-minute decisions. Adjusting a retirement contribution, timing a purchase, or shifting income all require enough runway to actually execute, and enough information to know they're the right call in the first place. Waiting until the holidays to think about any of this usually means the window's already closed on the moves that would've made the biggest difference.

Let's Talk Before the Year Gets Away From Us

Year-end planning works best as a conversation, not a checklist you run through alone in December. If you want to walk through where you stand for 2026 and what's worth adjusting before the year ends, now's the time to start that conversation, not November.

Ready to get ahead of year-end? Contact us to schedule a planning check-in.