There is no single small business tax rate in the United States — what you pay depends almost entirely on your entity type. A C-corporation pays a flat 21% federal corporate income tax on its profit. Every other common structure — sole proprietorship, partnership, LLC, and S-corporation — is a pass-through, meaning the business itself pays no federal income tax and the profit is taxed on the owner's personal return at ordinary rates that run from 10% to 37% depending on total taxable income. On top of that, most self-employed owners and partners owe 15.3% self-employment tax (Social Security and Medicare) on their net earnings, and the Qualified Business Income (QBI) deduction can shave up to 20% off the income that gets taxed. So the honest answer to "what's my rate?" is a blend: your personal bracket, plus payroll or self-employment tax, minus deductions, plus whatever your state charges.
Key takeaways
- There is no single small business tax rate — C-corps pay a flat 21% federal, while pass-throughs (sole prop, partnership, LLC, S-corp) are taxed at the owner's personal rate of 10%-37%.
- Most self-employed owners also owe 15.3% self-employment tax (12.4% Social Security up to the wage base + 2.9% Medicare, with no Medicare cap).
- The Qualified Business Income (QBI) deduction can reduce taxed pass-through income by up to 20% for eligible owners.
- An LLC is not its own tax class — it defaults to sole-prop or partnership treatment but can elect S-corp or C-corp status.
- State taxes vary enormously: some states have no personal income tax, while others levy franchise or gross-receipts taxes you owe even in a loss year.
- An S-corp election can move owner distributions out of the 15.3% payroll layer once profit reliably exceeds a reasonable salary.
- Taxes are calendar-driven cash outflows; on the revenue-based/MCA marketplace channel, approval leans on bank deposits and revenue (FICO 500+, min ~$10,000, 24-48h) rather than credit — never guaranteed.
The short version: your rate depends on your entity
Small business federal taxes fall into two worlds. In the first, the business is a separate taxpayer. In the second — where the large majority of small businesses live — the business is invisible to the IRS as a taxpayer and its profit lands on the owner's individual return.
- C-corporation: Flat 21% federal tax on corporate profit. If the corporation then distributes dividends, owners pay again on those dividends — the classic "double taxation."
- Sole proprietorship (Schedule C): Profit is taxed at your personal ordinary rate (10%-37%), plus self-employment tax.
- Partnership / multi-member LLC: Profit passes through to each partner's personal return, taxed at their bracket, plus self-employment tax on active partners.
- S-corporation: Profit passes through to shareholders at their personal rate, but only the owner's reasonable salary is subject to payroll tax — remaining profit distributed as a shareholder distribution avoids the 15.3% layer.
An LLC is not a tax category of its own. By default a single-member LLC is taxed as a sole proprietorship and a multi-member LLC as a partnership, but an LLC can elect to be taxed as an S-corp or C-corp. That flexibility is exactly why entity choice, not a headline rate, is the real tax lever.
Federal income tax by structure — the numbers that matter
For pass-through owners, the "business tax rate" is really your marginal individual rate applied to business profit that stacks on top of any other household income. The 2026 ordinary brackets remain the seven-tier 10% / 12% / 22% / 24% / 32% / 35% / 37% structure, indexed for inflation. Two federal mechanics move the effective number more than the bracket itself:
- Self-employment (SE) tax: 15.3% on net self-employment earnings — 12.4% Social Security up to the annual wage base, plus 2.9% Medicare with no cap (and an extra 0.9% Medicare surtax on high earners). You deduct half of SE tax when computing income tax, which softens the blow but does not remove it.
- QBI deduction: Eligible pass-through owners can deduct up to 20% of qualified business income, which meaningfully lowers the profit that actually gets taxed. Phase-outs and service-business limits apply above certain income thresholds.
The C-corp's 21% can look low next to a 37% top personal bracket, but remember the second tax on dividends. For many owners who reinvest profit and pay themselves reasonably, a well-run S-corp election is the structure that minimizes the total blended bill — not a switch to C-corp.
Don't forget state and local — the rate you actually feel
Federal is only part of the picture. States tax small business profit in wildly different ways, and this is where two identical businesses can end up with very different effective rates:
- No state income tax: States like Texas, Florida, Nevada, Wyoming, South Dakota, and Tennessee levy no personal income tax, so pass-through profit escapes a state income layer — though some (e.g., Texas) impose a franchise/gross-receipts tax instead.
- Flat corporate rates: Many states add their own corporate income tax on C-corps, commonly in the mid-single digits.
- Franchise, gross-receipts, and privilege taxes: Several states tax revenue or capital regardless of profit — so you can owe even in a loss year.
- Local taxes: Cities and counties may add their own business, payroll, or license taxes on top.
The practical takeaway: your true small business tax rate is federal income tax + SE/payroll tax + state income or franchise tax + local levies, all net of deductions. Owners who plan around only the federal headline number routinely under-reserve.
A realistic example: same profit, different structures
The table below is illustrative only — figures are labeled "for example" and rounded to show direction, not a filing. Assume a single owner, $120,000 of net business profit, and no other household income. Real numbers depend on your state, deductions, QBI eligibility, and reasonable-salary facts, so treat this as a way to see how the layers stack, not a calculator.
| Structure (for example) | Who pays income tax | Payroll / SE tax exposure | Directional total tax burden |
|---|---|---|---|
| Sole prop / single-member LLC | Owner, at personal brackets | 15.3% SE tax on essentially all net profit | Highest of the pass-throughs on this profit level |
| Partnership / multi-member LLC | Each partner, at their brackets | SE tax on active partners' shares | Similar to sole prop, split across partners |
| S-corporation | Shareholder, at personal brackets | Payroll tax on reasonable salary only; distributions exempt from the 15.3% | Often the lowest blended burden here |
| C-corporation | Corporation at flat 21% | Payroll tax on owner's W-2 wages | Competitive if profit is retained; higher if paid out as dividends (second tax) |
Notice what the table is not doing: it is not multiplying a rate by profit to hand you a single dollar figure. That would be misleading, because QBI, the half-SE-tax deduction, state rules, and your salary decisions all move the outcome. The point is the ranking and the mechanics.
Decision framework: which structure fits your tax situation
Entity choice is a cash-flow and risk decision as much as a tax one. Use these signals rather than chasing the lowest headline rate.
A sole prop or single-member LLC works best when: you are early-stage, profit is modest, you want the simplest filing, and the S-corp payroll overhead would cost more than it saves. Avoid staying here when profit climbs into the range where SE tax on all of it becomes a large, avoidable line.
An S-corp election works best when: the business consistently nets well above a reasonable salary for your role, you can run payroll properly, and you want to keep distributions out of the 15.3% payroll layer. Avoid it when profit is thin or erratic — payroll compliance, extra filings, and reasonable-comp scrutiny can outweigh the savings, and paying yourself an artificially low salary invites an IRS challenge.
A C-corp works best when: you plan to retain and reinvest profit, seek outside/venture investment, or want to offer equity broadly. Avoid it when you intend to pull most profit out as the owner — double taxation on dividends erases the 21% advantage.
Across all of them, avoid these traps: under-reserving because you only budgeted for the federal bracket; missing quarterly estimated payments and eating penalties; and treating a growth or equipment-heavy year as if last year's tax reserve still fits.
Where cash flow — not the tax rate — becomes the real constraint
Here is the operator reality: taxes are one of the few large, non-negotiable, calendar-driven cash outflows a small business faces. Quarterly estimates, payroll tax deposits, franchise taxes, and the year-end true-up all hit on fixed dates, regardless of whether a big customer paid late. Profitable businesses get squeezed not because the rate is high, but because the timing collides with payroll, inventory, and receivables.
When a tax obligation lands in the same window as a slow-paying customer or a seasonal dip, owners bridge the gap in different ways. A revenue-based financing or MCA marketplace can be one path when the need is short-term and speed matters, because approval leans on your bank deposits and revenue history rather than your credit score. Typical parameters we see on that channel: minimums around $10,000, FICO 500+, and funding in roughly 24-48 hours. Repayment is structured as a fixed factor against future receivables, not an APR-style loan, which is why the fit is timing gaps and revenue-generating uses — not funding the tax bill itself as a habit. Nothing here is ever guaranteed; a marketplace shops your file to multiple funders and approval depends on your actual deposits.
The disciplined move is to reserve for taxes as they accrue so financing is a bridge for growth and timing, not a patch for an unfunded liability. For the mechanics of qualifying on deposits over credit, see our revenue-based financing guide, and for the broader menu of options, our business funding pillar.
How to actually lower your effective rate
Legitimate rate reduction comes from structure and deductions, not from guessing at a lower number. The highest-leverage moves for most owners:
- Claim the QBI deduction if eligible — up to 20% off qualified business income is one of the largest single levers a pass-through has.
- Evaluate an S-corp election once profit reliably exceeds a reasonable salary, to move distributions out of the 15.3% payroll layer.
- Time deductible purchases — Section 179 and bonus depreciation can accelerate write-offs for equipment and vehicles in the year you need the deduction.
- Fund a retirement plan — a SEP-IRA or solo 401(k) reduces taxable income while building owner wealth.
- Track every ordinary-and-necessary expense — home office, mileage, software, and professional fees add up and directly lower the profit that gets taxed.
- Pay quarterly estimates on time — this doesn't lower the rate, but it kills underpayment penalties that quietly raise your effective cost.
Run these with a CPA against your real numbers. The difference between a poorly chosen structure and a well-planned one is frequently larger than any interest cost you'll ever pay on financing.
Frequently asked questions
What is the small business tax rate in 2026?
There isn't one flat rate. C-corporations pay a flat 21% federal corporate tax. Every other common structure — sole proprietorships, partnerships, LLCs, and S-corps — is a pass-through, so profit is taxed on the owner's personal return at ordinary rates from 10% to 37%, usually plus 15.3% self-employment tax and any state tax.
Do LLCs have their own tax rate?
No. An LLC has no tax rate of its own. By default, a single-member LLC is taxed like a sole proprietorship and a multi-member LLC like a partnership, meaning profit flows to the owners' personal returns. An LLC can also elect to be taxed as an S-corp or C-corp, which changes the mechanics significantly.
What is self-employment tax and why does it matter so much?
Self-employment tax is 15.3% on your net self-employment earnings — 12.4% for Social Security up to the annual wage base plus 2.9% for Medicare with no cap. It matters because it stacks on top of income tax, so a sole proprietor's true burden is often much higher than their income-tax bracket alone suggests. You can deduct half of it when figuring income tax.
Is a C-corp's 21% rate actually cheaper?
Only sometimes. The 21% flat rate is attractive if you retain and reinvest profit. But if the corporation distributes profit as dividends, owners pay a second tax on those dividends — double taxation. For owners who pull most profit out, a pass-through with an S-corp election is frequently cheaper overall.
How does an S-corp election lower taxes?
With an S-corp, only your reasonable salary is subject to payroll tax. Remaining profit taken as a shareholder distribution avoids the 15.3% payroll layer. This works best once profit consistently exceeds a reasonable salary for your role; if you set the salary artificially low, the IRS can challenge it.
What is the QBI deduction?
The Qualified Business Income deduction lets eligible pass-through owners deduct up to 20% of their qualified business income before tax is calculated. It's one of the largest single levers available to small business owners, though phase-outs and limits apply for higher earners and certain service businesses.
How should I set aside money for taxes as a small business owner?
Reserve for taxes as profit accrues rather than at filing time, and account for all layers: federal income tax, self-employment or payroll tax, state income or franchise tax, and local levies — net of deductions. Many owners set aside a percentage of each deposit and pay quarterly estimates to avoid underpayment penalties.
What if a tax bill hits during a cash-flow crunch?
The disciplined answer is to reserve ahead so taxes are funded when due. When a timing gap opens — a tax deadline colliding with slow receivables — some owners bridge it with revenue-based financing or an MCA marketplace, where approval leans on bank deposits and revenue rather than credit (FICO 500+, minimums around $10,000, funding in about 24-48 hours). It's a short-term bridge for timing and growth, never a substitute for reserving, and approval is never guaranteed.
