how-to
How to Understand What Taxes a Small Business Pays
Last Updated: November 15, 2026
Quick Summary
A small business can owe four main types of small business taxes: federal and state income tax on taxable income, self-employment tax of 15.3% on net earnings for sole proprietors and partners, payroll taxes such as FICA and FUTA if you have employees, and sales and use tax on taxable goods and services. Your entity structure decides which of these apply and which forms you file.
- Sole proprietors report profit on Schedule C and pay the full 15.3% self-employment tax on net earnings.
- The 21% corporate rate only applies to C corporations, not pass-through businesses.
- Employers pay 7.65% FICA and withhold the same amount from each employee.
- Estimated tax payments are generally due January 15, April 15, June 15, and September 15.
- You generally avoid the underpayment penalty by paying 90% of current-year tax or 100% of last year's tax.
Table of Contents
- The Four Main Tax Categories Every Small Business Faces
- Small Business Taxes for Beginners: Match Your Business Structure to Your Obligations
- The Small Business Tax Rate for Sole Proprietors and Pass-Through Owners
- Small Business Payroll Taxes for Employers: FICA, FUTA, and Withholding
- Small Business Estimated Quarterly Taxes: A Payment Calendar That Works
- Get a Free Consultation on Your Small Business Tax Plan
- Frequently Asked Questions
The Four Main Tax Categories Every Small Business Faces
Most owners ask what taxes does a small business pay and expect one number. There isn't one. According to the IRS self-employment tax guidance, the self-employment tax rate alone is 15.3%, and that's before income tax, payroll tax, or sales tax enter the picture.
At DM Tax Professionals, we see this confusion constantly. Owners budget for one tax and get hit with four.
Here's the short version. A small business can owe:
- Income tax at the federal and state level
- Self-employment tax on net earnings
- Payroll taxes if you have employees
If you want help organizing these obligations, our tax planning service maps each category to your situation.
Federal Income Tax and State Income Tax
Federal income tax is a tax on your business's taxable income, calculated after deductions. Pass-through owners report it on their personal return.
Federal income tax uses a graduated rate schedule. Your marginal rate depends on your taxable income and filing status.
State income tax varies widely. Some states charge none. Others layer a flat or graduated rate on top of the federal bill.
Self-Employment Tax, Payroll Taxes, and Sales Tax
Self-employment tax covers Social Security and Medicare for owners who work for themselves. For 2026, the first $184,500 of combined wages and net earnings is subject to the Social Security portion, per the IRS.
Payroll taxes apply once you hire. Sales tax applies when you sell taxable goods or services in a state that requires collection.
| Tax Type | Who Pays | Trigger |
|---|---|---|
| Income tax | All profitable businesses | Taxable income |
| Self-employment tax | Sole proprietors, partners | Net earnings |
| Payroll taxes | Employers | Employees on payroll |
| Sales and use tax | Sellers of taxable goods | Taxable sales |
Small Business Taxes for Beginners: Match Your Business Structure to Your Obligations
Small business taxes for beginners start with one decision: your entity type. Structure decides which forms you file, which taxes apply, and how much self-employment tax you expose yourself to.
| Structure | Federal income tax form | Who pays income tax | Self-employment tax | Payroll tax on owner pay | Key trade-off |
|---|---|---|---|---|---|
| Sole proprietorship | Schedule C (Form 1040) | Owner | Yes, on net profit | No W-2 required for owner | Simplest, but full SE tax on all profit |
| Partnership | Form 1065 plus Schedule K-1 | Partners | Yes, on distributive share | No W-2 required for partners | Flexible allocation, but SE tax on active partners' shares |
| LLC (single-member) | Schedule C by default | Owner | Yes, on net profit | No W-2 required for owner | Liability protection without a separate tax return by default |
| LLC (multi-member) | Form 1065 by default | Members | Yes, on distributive share | No W-2 required for members | Partnership taxation with liability protection |
| S corporation | Form 1120-S plus Schedule K-1 | Shareholders | Only on reasonable salary | Yes, on reasonable salary | Payroll tax savings possible, but payroll and reasonable-comp rules apply |
| C corporation | Form 1120 | Corporation, then shareholders on dividends | No | Yes, on wages | 21% corporate rate, but double taxation on distributions |
A few mechanics matter more than the labels:
- Sole proprietorship: The owner reports profit on Schedule C and pays income tax plus the full 15.3% self-employment tax on net earnings. There is no separate business return, so the personal return carries everything.
- Partnership: The partnership files Form 1065 and issues Schedule K-1 to each partner. Partners report their distributive share on their personal returns and generally owe self-employment tax on active trade or business income.
- S corporation: The S corporation files Form 1120-S and issues Schedule K-1. Shareholders must take a reasonable salary subject to payroll tax; remaining profit passes through without self-employment tax. The IRS scrutinizes whether salary is reasonable, so underpaying it is a common audit trigger.
- C corporation: The corporation pays the 21% federal corporate rate on profit, and shareholders pay tax again on dividends. That double taxation is the main reason small firms often avoid C status unless they need it for investors or benefits.
Watch out: An LLC is a legal entity, not a tax classification.
If you're still choosing, our business formation service helps you pick an entity that fits your tax picture.
The Small Business Tax Rate for Sole Proprietors and Pass-Through Owners
There is no single small business tax rate for sole proprietors. Your rate depends on your taxable income and bracket.
A sole proprietor's profit flows to their personal return.
A common mistake is assuming the corporate rate applies to everyone. It doesn't.
What most guides miss is the stacking effect. Self-employment tax and income tax both hit the same profit.
Small Business Payroll Taxes for Employers: FICA, FUTA, and Withholding
Small business payroll taxes for employers break into three buckets: FICA, FUTA, and income tax withholding.
FICA splits into Social Security and Medicare. The employer pays 7.65% and withholds the same from the employee.
FUTA is the federal unemployment tax, paid only by the employer. Withholding is the employee's income tax, which you collect and remit but never fund yourself.
Missing a deposit deadline can lead to penalties.
Small Business Estimated Quarterly Taxes: A Payment Calendar That Works
Small business estimated quarterly taxes are payments you make four times a year to cover income tax and self-employment tax when you don't have enough withholding. Miss them and the IRS can assess an underpayment penalty, which accrues like interest until you pay. The penalty is calculated on the underpayment amount for the period it was unpaid, so the cost grows the longer you wait.
Estimated tax payments generally fall on these dates:
- January 15: Q4 payment for the prior year
- April 15: Q1 payment plus the annual return
- June 15: Q2 payment
When a due date falls on a weekend or federal holiday, the deadline moves to the next business day.
How the safe harbor actually works
The safe harbor is the rule that lets you avoid the penalty even if you underpay relative to your actual tax.
If your income is uneven through the year, the annualized income installment method lets you match each payment to the income actually earned in that period. It requires more recordkeeping but can reduce or eliminate a penalty for owners with seasonal revenue.
A payment workflow that holds up
- Project the year. Estimate net profit and self-employment tax before the first payment is due, then divide by four as a starting point.
- Choose a safe harbor. Decide whether to target 90% of current-year tax or the prior-year percentage, and document the choice.
- Schedule the dates. Put all four due dates on the calendar with a reminder two weeks ahead so cash is available.
- Pay electronically. Use IRS Direct Pay or the Electronic Federal Tax Payment System and keep the confirmation for each payment.
- Reconcile each quarter. Compare actual profit to the projection and adjust the next payment rather than waiting until April.
Watch out: Withholding is treated as paid evenly through the year, but estimated payments are credited on the date received. If you back-load payments to December, you can still owe a penalty for the earlier quarters even though the total paid is correct.
Our tax preparation team can set up a schedule that keeps you compliant.
Get a Free Consultation on Your Small Business Tax Plan
The real challenge isn't knowing the categories. It's applying them to your numbers without overpaying or missing a deadline.
That's where we come in. DM Tax Professionals offers specialized tax planning for professionals, reasonable service bundles, and tax debt relief support.
Get started with DM Tax Professionals and turn a confusing tax picture into a clear, organized plan. Our strategic tax planning for small business consultation is free, and it starts with your numbers, not a sales pitch.
Tax rules shift, and so does your business. The owners who stay ahead are the ones who review their obligations before the deadline, not after.
Frequently Asked Questions
What taxes does a small business have to pay?
Most small businesses owe federal income tax on profits, state and local income tax where applicable, and self-employment tax if the owner is a sole proprietor or partner. If you have employees, you also handle payroll taxes, including the employer and employee shares of Social Security and Medicare plus federal unemployment tax. Businesses selling taxable goods or services collect sales tax. The exact mix depends on your business structure, location, and whether you hire staff.
How much should a small business set aside for taxes?
A common starting point is 25% to 30% of net earnings, though the right figure depends on your bracket, state rate, and self-employment tax. A sole proprietor earning $80,000 in net profit faces a 15.3% self-employment tax on most of that amount, plus federal income tax at their marginal rate. Work with a tax professional to calculate a set-aside percentage based on your actual numbers rather than a generic rule.
Do small businesses pay taxes monthly or quarterly?
Income and self-employment taxes are generally paid quarterly through estimated tax payments, not monthly. Payroll taxes follow a different schedule: depending on your total payroll, deposits may be monthly or semiweekly. Sales tax remittance schedules vary by state. Set up a calendar that tracks each obligation separately so a quarterly deadline does not get confused with a payroll deposit date.
Does an LLC pay taxes differently from a sole proprietorship?
A single-member LLC is taxed like a sole proprietorship by default, so the owner reports business income on Schedule C and pays self-employment tax on profits. A multi-member LLC defaults to partnership taxation. Neither structure pays corporate income tax unless the LLC elects S corporation or C corporation status. The 21% federal corporate rate applies only to C corporations, so an LLC election changes both the tax and the filing requirements.
