Self-Employment and 1099 Tax Calculator (Federal + State)
Estimate your federal taxes, self-employment taxes, and state taxes if you earn income as a freelancer, contractor, creator, or small business owner. This CPA-built calculator also helps determine whether your business income level may benefit from an LLC or S-Corporation structure, and shows where tax-planning opportunities may exist.
Self-Employment Tax Calculator
If you earn 1099 income or run your own business, taxes are usually not automatically withheld. This calculator estimates your federal income tax, self-employment tax, state income tax, and quarterly estimated payments.
Tax brackets, deductions, and Social Security limits change each year.
State income taxes vary widely based on where you live.
Standard deduction for 2026: $16,100
Include W-2 employment, investment income, or other non-business income.
Include freelancing, consulting, contracting, creator revenue, or small business income.
Software, equipment, marketing, office expenses, travel, contractor payments, etc.
Above a certain income, the IRS limits the 20% Qualified Business Income deduction — and removes it entirely for businesses built on the owner's personal expertise. Architects and engineers are specifically excluded from that limit and should choose the first option.
Wages on W-2s your business issued to employees — including yourself, if you're on an S-Corp payroll. Sole proprietors with no employees enter 0. Above the income threshold, the QBI deduction is capped at 50% of this.
Withholding & Estimated Payments Already Made
Enter any taxes already withheld from your paychecks, or estimated payments you've made this year, to see your net amount due.
From W-2 Box 2 or other federal withholding.
From W-2 Box 17 or other state withholding.
Total quarterly estimated tax payments already submitted to the IRS.
Your Estimated Tax Breakdown
Federal Income Tax
$0
0.0% effective rate
Self-Employment Tax
$0
0.0% of SE income
State Income Tax
estimate$0
0.0% effective rate
*A single-rate approximation — actual state tax depends on brackets, deductions and credits this tool doesn't model, so it can be materially off.
Total Estimated Tax
$0
0.0% effective rate
Estimated Quarterly Payments
Combined TotalSelf-employed individuals usually make quarterly estimated tax payments to avoid underpayment penalties. These amounts are combined totals that will be broken down by federal and state accordingly.
Q1
$0
Due: April 15
Q2
$0
Due: June 15
Q3
$0
Due: Sept 15
Q4
$0
Due: Jan 15
Combined total: these amounts represent federal and state taxes together. Your accountant will help you allocate the appropriate portion to federal (IRS Form 1040-ES) and state estimated tax payments. Actual payments may vary as your income changes through the year.
Ready for Personalized Tax Help?
Our CPA team can help you optimize your tax strategy and maximize deductions. Schedule a free consultation to discuss your specific situation.
How Tax Strategy Could Change This Number
Your estimate is based on basic assumptions. Depending on your income and business setup, there may be opportunities to reduce taxes through planning. The ranges below are illustrative — they are not calculated from your situation.
Retirement Contribution Planning
Retirement plans such as a Solo 401(k) or SEP-IRA may reduce taxable income while helping you save for the future.
Illustrative annual tax impact:
$0 – $0
Assumes contributing 15–25% of net profit at a 24–32% marginal rate — not your actual bracket.
Deduction Optimization
More accurate expense tracking and tax-aware bookkeeping can help reduce taxable profit and improve planning.
Illustrative annual tax impact:
$0 – $0
Assumes finding 5–15% more deductible expense at a 24–32% marginal rate.
Important: These are illustrative planning opportunities, not guaranteed savings, and they are not a computed result for your situation. Actual tax savings depend on your specific tax year, state, entity structure, payroll, deductions, and other factors. Consult with a CPA for personalized advice.
What this ceiling assumes
$72,000 is the most the IRS allows into one retirement plan for one person in 2026— your own contributions and your business's, combined. It's a ceiling, not a target, and most owners land well below it.
How much you can actually put in depends on:
- What you pay yourself.W-2 wages if you run an S-corp, net profit if you're a sole proprietor. You can't contribute more than you earn.
- Your age. At 50 or older you can add $8,000 on top of the ceiling, and between 60 and 63 that becomes $11,250 instead — if your plan document allows it.
- Which plan you have. A Solo 401(k), SEP-IRA and SIMPLE all work differently. A SEP-IRA gets no catch-up at all and is separately capped at 25% of compensation.
- Your entity structure. The arithmetic differs between a sole proprietorship, an S-corp and a partnership.
Those are the reasons a number this size rarely applies as-is. Talk to us before you plan around it — working out which ceiling is actually yours takes about fifteen minutes.
Do You Need an LLC or S-Corporation?
Many new businesses assume they need an LLC immediately. In reality, most businesses begin as sole proprietorships, which are often the simplest and most efficient structure early on. Entity structures such as LLCs and S-Corporations often become beneficial later, once a business reaches certain profitability levels.
The gauge below evaluates taxable self-employment income only, because entity structures do not change how W-2 wages or investment income are taxed.
Your Current Income Level
Early Stage
Most new businesses start as sole proprietorships. This is usually the simplest and most tax-efficient structure at this income level.
Early Stage
$0–$40k
Growth Stage
$40k–$70k
Entity Zone
$70k–$150k
Optimization
$150k–$300k
Advanced Planning
$300k+
Business Health Check for Small Business Owners
Taxes are only one part of running a successful business. This quiz evaluates how organized your business is from a bookkeeping, tax planning, and financial management standpoint.
Take the 2-Minute Business Health QuizHow Self-Employment Taxes Work
If you're self-employed, you're responsible for paying both the employee and employer portions of Social Security and Medicare taxes — commonly known as self-employment tax. Unlike W-2 employees, who have taxes automatically withheld from their paychecks, self-employed individuals must estimate and pay their taxes quarterly.
Self-employment tax has two components: Social Security tax at 12.4% on earnings up to the annual wage base, and Medicare tax at 2.9% on all net earnings. Because the wage base is indexed for inflation, it rises most years — the calculator above applies the figure that matches the tax year you select.
Your self-employment income is also subject to federal income tax based on the brackets for your filing status, and — depending on where you live — to state income tax. The calculator estimates all three components to give you a complete picture of your liability.
Estimated Taxes for Freelancers and Independent Contractors
Self-employed individuals are generally required to make quarterly estimated tax payments if they expect to owe $1,000 or more in tax for the year. Those payments are due in April, June, September, and the following January.
Many freelancers and contractors are surprised by their tax bill at year end because they didn't set money aside as they earned it. Making quarterly estimated payments avoids both the large April surprise and potential underpayment penalties.
The key to managing quarterly taxes is estimating your income accurately and setting money aside each quarter. If your income varies through the year, you can adjust each quarterly payment based on what you've actually earned.
When Should a Freelancer Form an LLC or S-Corporation?
Many new business owners assume they need to form an LLC or corporation immediately. In reality, most businesses start as sole proprietorships, which are the simplest structure with the least administrative burden.
An LLC provides liability protection, meaning your personal assets are shielded if the business faces legal issues. On its own, though, an LLC doesn't change how your business income is taxed unless you also elect to be taxed as an S-Corporation.
An S-Corporation election can reduce self-employment taxes for a profitable business. You pay yourself a reasonable salary (subject to employment tax) and take remaining profit as a distribution (not subject to self-employment tax). This typically becomes worth evaluating once net self-employment income exceeds roughly $60,000–$75,000 — but it adds payroll and compliance costs, so there is a real break-even point.
The entity decision depends on your income level, liability concerns, and long-term goals. Most businesses benefit from starting as a sole proprietorship and transitioning as they grow.
Tax Planning Strategies for Self-Employed Business Owners
Beyond basic compliance, there are several strategies self-employed business owners can use to reduce their tax burden.
S-Corporation Planning
Electing S-Corp status can reduce self-employment taxes by splitting income between salary and distributions. It requires payroll setup and additional compliance, but can save meaningful amounts for consistently profitable businesses.
Retirement Contributions
Self-employed individuals can contribute to a Solo 401(k) or SEP IRA, reducing taxable income while building retirement savings. Contribution limits are indexed annually, so confirm the current-year cap before you plan around a specific number.
Deduction Optimization
Many self-employed people leave money on the table by not tracking every eligible deduction. Common ones include home office expenses, equipment, software, marketing, travel, meals, and professional services. Better tracking and categorization directly reduces taxable income.
Bookkeeping and Financial Management
Keeping accurate, organized records year-round makes tax planning easier and more effective. If you track income and expenses consistently, you can spot opportunities to reduce taxes and make better business decisions.
Common Questions
Talk With a CPA About Your Business Taxes
A short consultation can help identify tax savings opportunities, entity structure planning, bookkeeping improvements, quarterly tax planning strategies, and personalized next steps.
Disclaimer: This calculator provides simplified estimates for planning purposes only and does not constitute tax advice, nor does using it create a client relationship. It does not account for tax credits, AMT, NIIT, capital gains rates, the additional standard deduction for age 65+ or blindness, state-specific deductions and credits, or local taxes. The Qualified Business Income (QBI) deduction is modelled in simplified form only — it ignores the value of business property (UBIA), capital gains, REIT and partnership income, multiple businesses, and prior-year loss carryforwards. Verify all figures with a qualified tax professional before relying on them.
Where the numbers come from: federal brackets and standard deductions are taken from the IRS Revenue Procedure for the tax year you select (Rev. Proc. 2023-34 for 2024, 2024-40 for 2025, and 2025-32 for 2026, as amended by the One Big Beautiful Bill Act). Retirement limits come from IRS Notices 2023-75, 2024-80 and 2025-67. Social Security wage bases come from the Social Security Administration. State income tax is exact only for states with no income tax; every other state is modelled with a single rate, and any state where that is an approximation is labelled estimate in the results above.