Freelancer tax bracket calculator — effective vs marginal rate
Two rates live on your tax return. Know which one applies to your decision.
Your freelance income is taxed at two different rates depending on which slice of income you are looking at. The effective rate tells you what you actually pay overall; the marginal rate tells you what the next dollar will cost.
This calculator shows both, plus your self-employment tax and how deductions can shift you between brackets.
Effective rate versus marginal rate
Two different tax rates live on every freelance tax return, and confusing them is one of the most common errors people make when pricing their work.
The marginal tax rate is the rate applied to your next dollar of taxable income. It is determined by which bracket that dollar falls into, and it is the rate that matters when you are deciding whether to take on an extra project or defer income to next year.
The effective tax rate is the total tax you pay divided by your total gross income. It is always lower than your marginal rate (unless you have no deductions at all), because your income is spread across multiple brackets — the first slice taxed at 10%, the next at 12%, and so on. The effective rate tells you what fraction of every dollar you earn actually goes to tax, averaged across your entire income.
The tax bracket calculator shows both numbers side by side, along with the self-employment tax that freelancers pay on top of income tax.
How the brackets actually work
The US federal income tax system is progressive, which means your income is divided into slices, and each slice is taxed at a different rate. You do not pay the top rate on all your income — you only pay that rate on the slice that falls above the bracket threshold.
For 2025, the single filer brackets are: 10% on income up to $11,000, 12% on income between $11,001 and $44,625, 22% on income between $44,626 and $95,375, 24% on income between $95,376 and $182,100, 32% on income between $182,101 and $231,250, 35% on income between $231,251 and $578,125, and 37% on income above $578,125. Married filing jointly brackets are roughly double at each threshold.
This stacking means that a raise of $10,000 does not reduce your take-home pay by $3,700 (37%) — it reduces it by however much of that $10,000 falls into each bracket. Most of it will be taxed at your marginal rate, but some may spill into the bracket below.
Self-employment tax adds a second layer
Freelancers pay self-employment tax on top of income tax. The SE tax is 15.3% applied to 92.35% of your net earnings from self-employment — the 92.35% accounts for the employer-equivalent portion that is deductible. This means the actual SE tax rate is approximately 14.13% (0.9235 × 0.153).
Unlike income tax, self-employment tax does not have brackets — it applies at the same rate to all net earnings. The combination of income tax and SE tax means your true marginal rate on additional freelance income is typically higher than the income tax bracket alone would suggest.
Why the effective rate matters for pricing
When you set your rate, you need to know what fraction of each dollar you actually keep. If your effective tax rate is 25%, you keep 75 cents of every dollar earned. If you mistakenly use your marginal rate of 32% instead, you would think you keep only 68 cents — which would make you charge more than necessary and potentially price yourself out of the market.
Conversely, if you use only the effective rate when making decisions about whether to take additional work, you might underestimate the tax cost of that work. The marginal rate is the correct number for incremental decisions — whether to take this project, defer income, or accelerate a deduction.
Deductions move you between brackets
Business deductions reduce your taxable income, which can move you into a lower bracket or at least reduce the amount of income taxed at your marginal rate. The standard deduction is automatic — you get it whether you itemize or not. Additional deductions come from legitimate business expenses: home office, supplies, software, professional development, and the self-employed health insurance deduction if you qualify.
The calculator lets you enter estimated deductions so you can see how they affect both your effective and marginal rates. A $10,000 deduction might drop your marginal rate from 22% to 12%, which changes the after-tax value of every additional dollar you earn.
Estimates only. This calculator uses 2025 federal income tax brackets for single filers and approximations for other filing statuses. It does not model state taxes, the qualified business income deduction, itemized deductions, phase-outs, or the alternative minimum tax. Rates and brackets change annually — confirm current figures with the IRS or a tax professional, and see the disclaimer.
Frequently asked questions
What is the difference between effective tax rate and marginal tax rate?
The effective tax rate is your total tax divided by total gross income — it tells you what fraction of everything you earn goes to tax. The marginal tax rate is the rate applied to your next dollar of taxable income — it tells you the tax cost of earning one more dollar. The effective rate is always lower than the marginal rate because income is taxed progressively across brackets.
Does the top tax bracket apply to all my income?
No. The US uses progressive brackets, meaning your income is divided into slices and each slice is taxed at a different rate. Only the portion of income above each bracket threshold is taxed at the higher rate. A 37% marginal rate means the last dollar you earned was taxed at 37%, not that all your income is taxed at 37%.
How much extra tax do I pay on additional freelance income?
Use your marginal rate for income tax and add the self-employment tax of approximately 14.13% (15.3% on 92.35% of net earnings). The combined marginal rate on additional freelance income is typically your income tax bracket rate plus roughly 14 percentage points. Each extra dollar earns you roughly 1 minus that combined rate.
Can deductions move me into a lower tax bracket?
Yes. Business deductions reduce your taxable income, which can shift income out of a higher bracket into a lower one. The standard deduction is automatic; additional deductions come from legitimate business expenses and adjustments like the self-employed health insurance deduction. Even a small deduction can move you across a bracket threshold if you are close to one.
Which rate should I use when setting my freelance rates?
Use your effective rate to understand your overall take-home pay, but use your marginal rate when making incremental decisions — whether to take an extra project, raise your rate, or defer income. The marginal rate is the correct number for deciding whether one more dollar of income is worth the tax cost.
Does this calculator include state taxes?
No. State income tax rules vary significantly by jurisdiction — some states have no income tax, others have flat rates, and most have their own progressive brackets. This calculator models federal income tax and self-employment tax only. Add your state tax separately if it applies.