Tax-Saving Strategies for Small Businesses and the Self-Employed (2026)

When you work for yourself, you pay both halves of Social Security and Medicare, you're responsible for your own withholding, and every business decision has a tax angle. The upside is that the tax code gives business owners far more legal ways to reduce taxable income than it gives employees. This guide covers the most useful ones for the 2026 tax year, with the real limits and the rules that keep them legal.

Disclaimer: This article is general information, not tax, legal or accounting advice. Business tax rules are detailed and fact-specific. Before acting, consult a CPA, enrolled agent or tax attorney.

All dollar figures are for the 2026 tax year unless noted.

Tax Avoidance vs. Tax Evasion

Tax avoidance is using the law as written to owe less: deducting real business expenses, funding a retirement plan, choosing an entity structure that fits your business. It's legal and expected.

Tax evasion is illegally escaping tax you owe. For small businesses, that usually looks like skimming cash sales, running personal expenses through the business, paying workers "off the books," or treating employees as contractors to avoid payroll tax. The IRS pursues all of these, and penalties can include fraud penalties of 75% of the underpayment plus possible prosecution.

Every strategy below is avoidance. None of them requires hiding anything.

Understand What You're Up Against: Self-Employment Tax

If you're a sole proprietor, single-member LLC or partner, you owe self-employment (SE) tax on top of income tax.

You can deduct half of your SE tax when figuring income tax. See exactly what you'll owe with the self-employment tax calculator.

1. Deduct Every Ordinary and Necessary Expense

The core rule is simple: you can deduct expenses that are ordinary (common in your industry) and necessary (helpful and appropriate for your business). The expense must be for the business, not your personal life.

Commonly missed deductions:

What you can't deduct: personal groceries, family vacations, clothing you could wear outside work, commuting from home to a regular workplace, or your own time. If an expense is part business and part personal, deduct only the business share and document how you calculated it.

2. Take the Home Office Deduction if You Qualify

If you use part of your home regularly and exclusively for business, and it's your principal place of business (or where you meet clients), you can deduct it.

There are two methods:

The simplified method caps out at $1,500 a year but needs almost no paperwork. The regular method can produce a larger deduction, but depreciation you claim on a home you own may be taxed when you sell.

"Exclusive" is the word that trips people up. A guest room that doubles as an office, or a kitchen table, doesn't qualify.

3. Deduct Vehicle Expenses Correctly

If you use a car for business, you can deduct the business portion using one of two methods:

Either way, you need a mileage log showing the date, destination, business purpose and miles for each trip. Commuting between your home and a regular work location isn't deductible. Vehicle deductions claimed at or near 100% business use are a known IRS scrutiny area, so be realistic and keep records.

4. Fund a Self-Employed Retirement Plan

Retirement contributions are one of the largest deductions available to business owners.

A Solo 401(k) often lets lower- and middle-income owners put away more than a SEP-IRA, because the $24,500 employee deferral is available on top of the profit-sharing piece. A SEP-IRA is simpler and can often be opened and funded right up to your tax filing deadline. Both plans share an overall annual limit, so compare them for your income level.

If you have employees, SEP and profit-sharing contributions generally must be made for eligible employees too. That's a cost to weigh, but it's also a valuable benefit for retaining staff.

5. Deduct Your Health Insurance Premiums

Self-employed people who aren't eligible for an employer-subsidized health plan (through their own or a spouse's job) can generally deduct health, dental and qualifying long-term care insurance premiums for themselves, their spouse and dependents. The deduction is taken on Schedule 1, not as a business expense, and it can't exceed your net self-employment income. It reduces income tax but not SE tax.

If you have a high-deductible health plan, pair it with an HSA: for the 2026 tax year, you can contribute up to $4,400 for self-only coverage or $8,750 for family coverage.

6. Claim the Qualified Business Income (QBI) Deduction

The Section 199A deduction lets many owners of pass-through businesses (sole proprietorships, partnerships, S corporations and most LLCs) deduct up to 20% of their qualified business income. The 2025 tax law made it permanent.

For the 2026 tax year, the simple version of the deduction applies when taxable income is at or below:

Above those thresholds, limits phase in. For specified service trades or businesses (such as health, law, accounting, consulting, financial services and performing arts), the deduction shrinks and eventually disappears. For other businesses, it becomes limited by W-2 wages paid and the cost of qualified property. If you're near the threshold, deductible retirement contributions can pull your taxable income back under it.

7. Consider an S Corporation Election, With Reasonable Pay

Once your business earns a solid, steady profit, electing S corporation status can reduce self-employment tax. Here's how it works:

The catch is reasonable compensation. The IRS requires S corp owner-employees to pay themselves a salary comparable to what the business would pay someone else to do the same work. Paying yourself an unrealistically low salary to avoid payroll tax is one of the most common S corp audit issues, and the IRS can reclassify distributions as wages.

An S corp also adds costs: payroll processing, a separate business tax return, possibly state fees, and more bookkeeping. For many owners, the savings only outweigh those costs once profit is well above what a reasonable salary would be. Compare the numbers for your business with the S corp tax calculator.

8. Expense Equipment Up Front With Section 179

Normally, business equipment is depreciated over several years. Section 179 lets you deduct the full cost of qualifying property (machinery, computers, office furniture, certain vehicles and off-the-shelf software) in the year you place it in service.

The Section 179 deduction can't exceed your business's taxable income for the year (the excess carries forward). The property must be used more than 50% for business. Heavy SUVs have their own lower cap, and passenger cars are subject to annual depreciation limits.

Buying equipment only to get a deduction rarely makes sense: you still spend the money. But if you need the equipment anyway, timing the purchase before year-end can bring the deduction into the current year. Estimate the benefit with the Section 179 calculator.

9. Hire Family Members the Right Way

Paying your children or spouse for real work can shift income to lower brackets and, in some cases, reduce payroll taxes. For example, wages a sole proprietor (or a partnership owned only by the parents) pays to a child under 18 are generally exempt from Social Security and Medicare tax. The child can also use the wages to fund a Roth IRA.

This only works if it's legitimate:

Paying a family member for work they don't do, or overpaying them, is not a deduction. It's a red flag.

10. Pay Quarterly Estimates to Avoid Penalties

There's no employer withholding tax from self-employment income, so you're expected to pay as you go. Estimated tax payments are generally due April 15, June 15, September 15 and January 15 of the following year (shifted when a date falls on a weekend or holiday).

You generally avoid an underpayment penalty if your withholding and estimates cover at least 90% of this year's tax or 100% of last year's tax (110% if last year's adjusted gross income was over $150,000). Missing payments doesn't change what you owe, but it adds penalties.

Work out each payment with the quarterly estimated tax calculator.

11. Keep Records That Would Survive an Audit

Good records are what turn a deduction into a deduction you get to keep.

Areas the IRS Scrutinizes

Small businesses and sole proprietors are audited more often than W-2 employees. Watch these areas closely:

The Bottom Line

The most valuable legal tax savings for small businesses usually come from four places: deducting every legitimate expense, funding a retirement plan, capturing the QBI deduction, and choosing the right entity structure once profits justify it. Add Section 179 for equipment you need anyway, pay estimates on time, and keep clean records.

Start by estimating your SE tax with the self-employment tax calculator, then test an S corp scenario and your quarterly payments.

Disclaimer: This guide is general information, not tax, legal or accounting advice. Rules and eligibility depend on your facts. Consult a CPA, enrolled agent or tax attorney before making decisions for your business.