Many business owners assume that once the calendar turns to a new year, their tax bill is already set in stone.
While it’s true that most tax planning needs to happen before December 31, there are still a few opportunities to reduce your tax liability before you file your return for 2025.
If you haven’t filed yet, here are three smart moves worth considering.
(As always, talk with your Accountant or tax professional before making final decisions.)
1. Contribute to a Retirement Account
One of the most effective ways to reduce your taxable income is by contributing to a retirement account.
If you’re self-employed or run a small business, you may have a couple options available, such as:
- SEP-IRA
- Solo 401(k)
Many of these contributions can still be made up until the tax filing deadline, and they may be deductible against your 2025 income.
For example, if your business had a strong year and you’re facing a higher tax bill than expected, a retirement contribution could help lower your taxable income while also investing in your future.
It’s one of the few ways to both reduce taxes today and build long-term financial security.
2. Make a Health Savings Account (HSA) Contribution
If you have a qualifying high-deductible health plan, contributing to a Health Savings Account (HSA) can provide a valuable tax benefit.
HSA contributions are:
- Tax-deductible
- Grow tax-free
- Can be withdrawn tax-free for qualified medical expenses
Even better, contributions for the 2025 tax year can typically be made until the tax filing deadline in April.
For many business owners, medical expenses are unavoidable. An HSA allows you to pay for those costs with pre-tax dollars, which can reduce your overall tax burden.
3. Review Your Books for Missed Deductions
This is where accurate bookkeeping really matters.
When books are rushed or incomplete, it’s surprisingly easy to miss legitimate business deductions.
Before filing your return, review your financials carefully for things like:
- Business mileage that wasn’t recorded
- Software subscriptions
- Professional services
- Home office expenses
- Small equipment purchases
- Bank or merchant processing fees
Even small deductions add up.
Clean, organized books make it much easier for your Accountant/CPA to identify legitimate expenses and ensure nothing is overlooked. In fact, many business owners are surprised how often messy records lead to missed deductions or extra CPA fees.
If you’re curious about the most common problems accountants see, you might also want to read Hidden Bookkeeping Costs That Hurt Small Businesses in 2025.
Why Getting Your Books Ready Early Matters
Many business owners don’t realize these opportunities exist until it’s too late.
When bookkeeping is delayed or incomplete, tax preparation becomes rushed. That often means fewer conversations about strategy and more focus on simply getting the return filed.
Clean, up-to-date books give you and your Accountant the ability to:
- Identify deductions
- Evaluate tax strategies
- Make informed decisions before filing
In other words, better books lead to better tax outcomes.
Quick Checklist Before You File
Before you finalize your 2025 tax return, consider asking:
- Have I contributed to a retirement account for the year?
- Am I eligible to make an HSA contribution?
- Are my books clean and up-to-date?
- Did I review expenses to make sure nothing was missed?
These small steps can sometimes make a meaningful difference in your final tax bill.
Final Thoughts
Taxes are rarely anyone’s favorite topic, but taking a little time to review your options before filing can pay off.
The key is giving yourself — and your Accountant— enough time to look at the numbers before the return is finalized.
That starts with having clean, organized books.
Not Sure If Your Books Are Ready for Tax Filing?
If you’re unsure whether your books are complete or if you might be missing deductions, now is the perfect time to review your numbers before filing.
I work with service-based business owners to make sure their books are clean, organized, and tax-ready so there are no surprises at tax time.
If you’d like a second set of eyes on your financials, schedule a quick call and we can talk through it.
Are you ready to move to the next step?
Many business owners try to handle bookkeeping themselves in the early stages of their business. But as the business grows, the opportunity cost increases. You can read more about that in When to Move from DIY Bookkeeping to Professional Support.
