How Small Businesses Can Reduce Their Income Taxes
Small business owners pay income tax and often self-employment tax on top of it. Here is a plain-language guide to the biggest legal strategies for cutting that bill, from entity structure to retirement plans to year-end timing.
Small business owners control how their income is earned, classified, and timed in ways a W-2 employee cannot. The biggest reductions come from entity structure, retirement plan contributions, equipment expensing, and keeping records good enough to claim every legitimate deduction.
Key takeaways
- The S-corp election can move a portion of business profit out from under self-employment and payroll tax, but only makes financial sense above roughly $50,000 to $60,000 in consistent net profit.
- Section 179 and 100 percent bonus depreciation, permanently restored under the OBBBA, let most businesses write off qualifying equipment fully in the year it is purchased.
- A retirement plan you sponsor as the employer, whether a Solo 401(k), SEP-IRA, or SIMPLE IRA, produces deductions on your personal return and can also be a retention tool for employees.
- The 20 percent QBI deduction is permanent as of 2025 and applies to most pass-through businesses below the income thresholds.
- An accountable plan for reimbursing employees and owners for home office and vehicle use converts what would be personal expenses into deductible business costs with no tax consequence to the recipient.
Major tax-reduction strategies for small businesses
| Strategy | Potential annual saving | Key requirement |
|---|---|---|
| S-corp election | Thousands in payroll tax per year | Net profit consistently above $50k-$60k |
| Section 179 / bonus depreciation | Full cost of qualifying equipment | Placed in service during the tax year |
| Solo 401(k) or SEP-IRA | Up to $72,000 off taxable income in 2026 | Self-employment or earned income |
| QBI deduction | Up to 20 percent of net business income | Income below phase-out thresholds |
| Accountable plan | Varies; avoids payroll tax on reimbursements | Written plan + substantiation |
Running a small business means you control decisions a salary earner cannot: what entity you use, how you pay yourself, when you recognize income, when you buy equipment. Each of those decisions has a tax consequence, and making them with the tax outcome in mind is not a gray area. It is what tax planning is.
The taxes in play for most small business owners are federal income tax at whatever bracket applies, state income tax in most states, and self-employment or payroll tax on earned income. Reducing any of them is fair game as long as the position is accurate and defensible.
Entity structure: the S-corp election
If you operate as a sole proprietor or a single-member LLC treated as a disregarded entity, you pay self-employment tax on every dollar of net profit. That is 15.3 percent up to the Social Security wage base of $184,500 in 2026, then 2.9 percent above it.
An S-corp changes the calculation. As an S-corp owner-employee, you pay yourself a W-2 salary, which is subject to payroll tax. Profit distributions beyond the salary are not. On $120,000 in net profit, a sole proprietor pays self-employment tax on the full amount. An S-corp owner paying themselves an $80,000 reasonable salary pays payroll tax on that amount only. The remaining $40,000 comes out as a distribution, avoiding both the employer and employee sides of FICA.
The break-even is usually around $50,000 to $60,000 in net profit. Below that, the cost of running payroll and filing a corporate return typically offsets the savings. The IRS requires the salary to be reasonable, meaning comparable to what you would pay someone else to do the same work.
Equipment deductions: Section 179 and bonus depreciation
Normally a large equipment purchase is deducted a little at a time over years, following IRS depreciation schedules. Two provisions let you pull that deduction forward to the year you buy the asset.
Section 179 is elective. You can take up to $2,560,000 in total for 2026, with the deduction phasing out dollar-for-dollar once total qualifying property placed in service exceeds $4,090,000. Section 179 cannot exceed your business income for the year; it cannot create a loss. Bonus depreciation under the OBBBA is 100 percent and permanent for qualifying property acquired after January 19, 2025. Unlike Section 179, bonus depreciation can push you into a loss, which then carries forward to offset future taxable income.
Qualifying property generally includes computers, tools, machinery, vehicles used for business, and off-the-shelf software. The key requirement is that the asset is placed in service during the tax year and used more than 50 percent for business.
Retirement plans
A retirement plan lets you move income from this year's tax return into deferred savings. For a small business owner, you can often fund both sides.
A Solo 401(k) allows a $24,500 employee deferral in 2026 plus an employer contribution of up to 25 percent of compensation. The combined limit is $72,000 under 50, $80,000 at 50 to 59, and $83,250 at 60 to 63. A SEP-IRA is simpler and allows contributions up to 25 percent of compensation, capped at $72,000 for 2026. A SIMPLE IRA is an option if you have employees; it costs less to administer but has lower limits.
Every dollar contributed is a deduction against taxable income. If you are in the 24 percent federal bracket, a $20,000 retirement contribution is $4,800 less federal income tax, plus whatever state income tax applies.
The QBI deduction
The qualified business income deduction, made permanent by the OBBBA in July 2025, lets eligible pass-through business owners deduct up to 20 percent of net business income. Pass-through entities include sole proprietorships, single-member LLCs, partnerships, and S-corps.
For most small businesses below the income thresholds, the deduction applies automatically. The income thresholds in 2026 are approximately $201,750 for single filers and $403,500 for joint filers. Above those levels, specified service trade or business owners, which covers professions like law, accounting, consulting, and finance, see the deduction phase out. A 20 percent deduction is substantial: on $100,000 of qualified business income, it is $20,000 removed from the income you pay tax on.
An accountable plan
If you use part of your home for business, drive your personal car for work, or pay out of pocket for business travel, an accountable plan is the mechanism for turning those costs into deductible business expenses without creating a taxable event.
Under an accountable plan, the business reimburses you for documented expenses, and the reimbursement is not wages, not subject to payroll tax, and not reportable as income to you. Without the plan, the same payment would be taxable compensation on both ends. The IRS requires three things: the expense must have a business connection, it must be substantiated with documentation, and any excess must be returned. A written plan is required.
Timing income and expenses
A cash-basis small business recognizes income when it is received and deducts expenses when they are paid. That gives you some ability to shift money across tax years. If this year's income is high, accelerating deductions and deferring income where possible can keep you in a lower bracket. Paying a January bill in December, prepaying a software subscription, making a large equipment purchase, or accelerating a retirement contribution all move deductions into this year.
This does not mean manufacturing transactions to manipulate income. It means making purchases and payments you need to make anyway at the time that helps your tax situation rather than a time that does not.
Tax planning starts with current books
Vuuv keeps your income and expenses categorized as they come in and generates Schedule C and other reports on demand, so you can see your real taxable income before year-end, when there is still time to act.
Start freeHow Vuuv helps
Most of what this guide describes requires knowing your numbers in real time. A surprise deduction you think of in March after the books are closed is harder to act on than one you see in November when you can still do something about it. Vuuv keeps your income and expenses categorized as they come in, generates Schedule C and other reports on demand, and stores receipt images alongside the transactions they belong to.
Frequently asked questions
What is the most effective way for a small business to reduce taxes?
It depends on the structure and income level. For a sole proprietor or single-member LLC earning under $50,000, maximizing retirement contributions and every legitimate business deduction is usually the most direct path. Above that level, the S-corp election and an accountable plan start producing savings worth the added compliance cost.
Does an LLC reduce my taxes?
Not automatically. A single-member LLC is taxed the same as a sole proprietorship by default. The entity type that can reduce taxes is the S-corp, which the LLC can elect to be taxed as. The LLC itself provides liability protection, not a tax reduction.
What is the QBI deduction and which businesses qualify?
The qualified business income deduction lets eligible pass-through business owners deduct up to 20 percent of their net business income. It is permanent as of the OBBBA signed in July 2025. Most small businesses qualify below the income thresholds, which in 2026 are roughly $201,750 for single filers and $403,500 for joint filers. Specified service businesses in law, consulting, finance, and similar fields face phase-outs above those levels.
Can I deduct equipment I bought this year?
Generally, yes. Section 179 lets you deduct the full cost of qualifying equipment placed in service during the year, up to $2,560,000 for 2026 (the deduction phases out above $4,090,000 in total qualifying purchases). Bonus depreciation, restored to 100 percent under the OBBBA for assets acquired after January 19, 2025, covers what is left. Between the two, most small businesses can write off the entire cost of computers, tools, machinery, and off-the-shelf software in the year of purchase.
What is an accountable plan?
A written plan under which a business reimburses employees or owners for legitimate business expenses, car use, home office costs, travel. If the plan meets IRS requirements, the reimbursements are deductible by the business and not taxable income to the recipient. Without an accountable plan, the same reimbursements are wages, subject to payroll tax on both ends.
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This article is general information, not tax advice. Tax rules change and every situation is different. Confirm the details against current IRS guidance or talk to a qualified tax professional before you file.