The most effective ways to reduce business taxes combine structural decisions, like how your business is organized and how you pay yourself, with strategic use of deductions and credits throughout the year. Some of these moves save a few hundred dollars; others can cut your tax bill by five figures. The key is knowing which strategies apply to your situation and acting before the tax year ends.
Choose the Right Business Structure
How your business is organized determines how your income gets taxed. If you’re a sole proprietor or single-member LLC, every dollar of profit is subject to self-employment tax at 15.3%, which covers Social Security and Medicare. That rate applies on top of your regular income tax.
Electing S corporation status changes that math significantly. With an S corp, you pay yourself a reasonable salary (which is subject to payroll taxes), and the remaining profit passes through to you as a distribution that avoids self-employment tax entirely. On $150,000 in net profit, for example, you might set your salary at $70,000 and take the other $80,000 as a distribution. That keeps roughly $12,000 in your pocket that would have gone to self-employment tax.
The S corp election generally starts making sense once your business nets more than $100,000. Below that, the added payroll costs and compliance requirements (you’ll need to run payroll, file quarterly payroll tax returns, and potentially pay for accounting help) can eat into or eliminate the savings. You can make the S corp election with either an LLC or a corporation as the underlying entity by filing Form 2553 with the IRS.
Deduct Equipment Immediately With Section 179
When you buy equipment, vehicles, software, or machinery for your business, you don’t have to spread the deduction over several years through depreciation. Section 179 lets you deduct the full purchase price in the year you buy it, up to $2,560,000 for 2026. The deduction begins phasing out once your total equipment purchases exceed $4,090,000, which puts it well within reach for most small and mid-sized businesses.
This applies to tangible property you use in your business more than 50% of the time: computers, office furniture, manufacturing equipment, certain vehicles, and off-the-shelf software all qualify. If you’re planning a major purchase, timing it before year-end lets you take the full deduction on this year’s return rather than waiting. The deduction is limited to your business’s taxable income for the year, so you can’t use it to create a loss.
Maximize Retirement Contributions
Retirement accounts are one of the most powerful tax-reduction tools available to business owners because they reduce your taxable income dollar for dollar. A solo 401(k), designed for self-employed individuals and owner-only businesses, offers especially high limits.
For 2026, you can contribute up to $24,500 as an employee deferral, plus up to 25% of your net self-employment compensation as an employer profit-sharing contribution. Combined, total contributions can reach $72,000 if you’re under 50. If you’re between 50 and 59 or older than 64, you can add $8,000 in catch-up contributions, bringing the total to $80,000. Those aged 60 to 63 get an even higher catch-up of $11,250, for a potential total of $83,250.
The deadline for making contributions is your business’s tax filing deadline, including extensions. So if you file on extension, you may have until October to fund your account and still claim the deduction on the prior year’s return. One important detail: if you want to make employee salary deferrals for a given year, you generally need to make that written election by the end of that business year. The compensation limit the IRS uses to calculate contributions is $360,000 for 2026.
A SEP IRA is a simpler alternative if you don’t need the employee deferral component. It allows employer contributions of up to 25% of compensation, but the total limit is lower than a solo 401(k) for most owners because it lacks the employee deferral side.
Claim the Research and Development Credit
The R&D tax credit isn’t just for pharmaceutical companies or tech giants. Any business that spends money developing new products, improving processes, or designing software may qualify. The credit equals 20% of your qualified research expenses above a base amount, or 14% under a simplified calculation method that compares your current spending to your average over the prior three years.
What makes this especially valuable for small businesses: if your company has $5 million or less in gross receipts and is no more than five years old, you can apply up to $500,000 of the credit directly against your payroll tax liability (the employer share of Social Security and Medicare taxes). That means even if you don’t owe much income tax yet, you can still benefit. The credit first offsets your Social Security tax, then Medicare tax, and any remaining amount carries forward to the next quarter.
Qualifying expenses typically include wages for employees performing research, supplies used in experiments or prototypes, and contract research costs. You’ll need to document what activities you conducted, why they qualify as research, and how much you spent. The IRS provides detailed guidance in the instructions for Form 6765.
Use Health Reimbursement Arrangements
If your business has fewer than 50 full-time employees and you don’t offer a traditional group health plan, a Qualified Small Employer Health Reimbursement Arrangement (QSEHRA) lets you reimburse employees for health insurance premiums and medical expenses tax-free. The reimbursements are deductible to your business and excluded from employees’ taxable income.
For 2026, the maximum annual reimbursement is $6,450 for employees with self-only coverage and $13,100 for employees with family coverage. You must offer the QSEHRA on equal terms to all full-time W-2 employees, and employees need to carry minimum essential coverage (like an individual marketplace plan) to receive reimbursements. Independent contractors don’t qualify.
If you have 50 or more employees, or you want more flexibility in setting different reimbursement amounts for different classes of workers, an Individual Coverage HRA (ICHRA) has no cap on reimbursement amounts and no limit on employer size. Both arrangements let you provide health benefits without the cost and complexity of a group plan, while creating a legitimate business deduction.
Deduct Home Office and Vehicle Expenses
If you use part of your home regularly and exclusively for business, you can deduct a portion of your rent or mortgage interest, utilities, insurance, and repairs. The simplified method allows $5 per square foot up to 300 square feet, giving you a maximum $1,500 deduction with minimal recordkeeping. The regular method requires tracking actual expenses and calculating the percentage of your home used for business, which often yields a larger deduction but demands more documentation.
For vehicles, you can either deduct actual expenses (gas, maintenance, insurance, depreciation) based on the percentage of business use, or use the standard mileage rate. Whichever method you choose, keep a mileage log that records the date, destination, business purpose, and miles driven for each trip. The IRS scrutinizes vehicle deductions closely, and a contemporaneous log is your best defense.
Time Your Income and Expenses Strategically
If your business uses cash-basis accounting, meaning you record income when received and expenses when paid, you have some control over which tax year those items land in. Deferring income into January or accelerating expenses into December can shift taxable income from a high-earning year into a lower one.
Practical ways to do this include prepaying rent, insurance premiums, or supply orders before year-end, and delaying invoicing for late-December work until January. This works best when your income fluctuates year to year. If you expect a significantly higher or lower income next year, timing decisions can move income into the year where it’s taxed at a lower marginal rate.
Be careful not to defer income artificially. The IRS expects you to recognize income you’ve actually received or have unrestricted access to. Holding a check you’ve already received until January doesn’t work: that income is taxable in the year you received it, regardless of when you deposit it.
Separate Personal and Business Expenses Cleanly
Every legitimate business expense you fail to track is a deduction you lose. Use a dedicated business bank account and credit card so that business spending is easy to identify and categorize at tax time. Common deductions that business owners overlook include professional development and training, business-related subscriptions and software, liability insurance premiums, professional association dues, and the employer-paid portion of employee benefits.
Accounting software that connects to your bank accounts and categorizes transactions automatically makes this far easier than sorting through statements once a year. The cost of that software is itself deductible, as are fees you pay to a bookkeeper or accountant to keep your records in order.