End-of-Year Tax Planning Tips for Business Owners
Tax Team
October 30, 2025
As a business owner, you manage many responsibilities at once. With so much happening, tax planning often moves down the priority list. However, thoughtful year-end tax strategies can significantly improve both your business and personal financial outlook.
This year, planning is especially important. The One Big Beautiful Bill Act (OBBBA) introduced several tax changes that may affect how you approach year-end decisions.
This guide highlights 10 key strategies to consider before 2025 ends!
Individual Tax Strategies for Business Owners
1. Maximize Retirement Contributions
Increasing contributions to retirement accounts such as a 401(k), SEP IRA, Solo 401(k), or Traditional IRA allows you to reduce taxable income while building long-term savings.
For 2025, contribution limits have increased across several retirement plans. Review your contributions to ensure you are taking advantage of the higher limits.
2. Consider Tax-Loss Harvesting
Tax-loss harvesting involves selling investments that have declined in value to offset capital gains elsewhere in your portfolio. This can help reduce taxable income, but the strategy must be coordinated with your financial and tax advisors to avoid wash-sale issues and maintain investment alignment.
3. Use a Health Savings Account (HSA)
If you are covered by a High-Deductible Health Plan, contributing to an HSA offers:
- Tax-deductible contributions
- Tax-deferred growth
- Tax-free withdrawals for qualified medical expenses
Funds roll over year to year, making HSAs useful for both current and long-term medical planning.
4. Incorporate Charitable Giving
Charitable contributions may reduce taxable income if you itemize. If you are already taking Required Minimum Distributions (RMDs), consider directing them to a charity through a Qualified Charitable Distribution (QCD). This can lower your taxable income and support causes you care about.
5. Review Withholdings and Estimated Payments
If you receive a W-2 from your business, review withholding levels to avoid penalties or unexpected tax bills. Adjustments made before year-end help keep cash flow predictable.
Business Tax Strategies to Implement Before Year-End
1. Maximize Deductions and Credits
Ensure all deductible business expenses are tracked and recorded, such as:
- Employee wages and benefits
- Travel and meals
- Software and equipment purchases
- Vehicle and mileage expenses
- Home office costs (if applicable)
Also review eligibility for credits, including:
- Research and Development (R&D) Tax Credit
- Energy efficiency incentives
- Work Opportunity Tax Credit (WOTC)
- Newly expanded credits under OBBBA
2. Reevaluate Opportunities for Research & Development (R&D) Tax Benefits
If your business works on improving products, processes, operations, or technology, you may qualify for the R&D Tax Credit, even if you do not operate in a traditional research environment.
Under previous law, domestic R&D expenses had to be amortized over five years, increasing taxable income for many businesses. OBBBA reversed this requirement.
Under OBBBA:
- Domestic R&D expenses can be deducted in the year they occur
- The change applies starting this tax year
- Startups may continue using the credit to offset payroll taxes
This restores a valuable deduction and improves cash flow for companies investing in innovation and development.
3. Evaluate Your Inventory Method
Inventory valuation methods such as FIFO, LIFO, or Average Cost can affect taxable income. In periods of price fluctuation, reviewing your method may reveal opportunities to better manage tax liability.
4. Reassess Your Business Structure
Your business entity type influences how income is taxed and how profits are distributed. For example:
- S-Corporations may allow payroll tax savings
- Partnerships and LLCs offer flexibility in profit allocations
- C-Corporations may benefit from flat corporate tax rates
Changes under OBBBA may enhance or reduce benefits depending on your structure. Reviewing your entity type now may lead to tax savings.
5. Utilize Bonus Depreciation and Section 179
OBBBA introduced permanent updates to Section 179 expensing rules, providing more predictability for business owners planning capital investments.
Under current Section 179 rules, you can:
- Deduct the full cost of qualifying equipment, machinery, technology, and vehicles in the year purchased
- Apply the deduction to certain building improvements, such as HVAC systems, lighting, and security upgrades
- Benefit from higher annual expensing limits that adjust for inflation
OBBBA also reinstated and extended 100% bonus depreciation, allowing businesses to fully deduct the cost of eligible new and used property placed in service during the year.
This supports cash flow by allowing the full deduction up front rather than spreading it over several years.
Questions About Implementing End-of-Year Tax Strategies?
At DSB Rock Island, we help business owners plan ahead and make informed decisions. Our team is actively helping clients take full advantage of new opportunities introduced through the One Big Beautiful Bill Act and other recent legislation.
If you’d like guidance on how these strategies apply to your business, we’re here to help.
