Self-Employment Tax & 1099 Calculators

Calculate self-employment tax, 1099 obligations, and business deductions.

Most Popular Calculators

State Corporate Income Tax Calculator

Calculate state corporate income tax liability by state. See effective tax rates, tax owed, and income after taxes for all 50 US states.

1099 Contractor Tax Calculator

Estimate your self-employment tax and quarterly payments as a 1099 contractor. See how much to set aside for taxes.

Estimated Tax Payments Calculator

Calculate your federal quarterly estimated tax payments. Includes Schedule C self-employment income, W-2 withholding, safe harbor rules, and quarterly payment schedule.

Federal Income Tax Bracket Calculator

Calculate your federal income tax using 2025 tax brackets. See your marginal rate, effective rate, and tax owed for any filing status.

Franchise Tax Calculator

Calculate state franchise tax liability based on net worth or capital. See franchise tax owed for Delaware, California, Texas, and all 50 US states.

Home Office Deduction Calculator

Calculate your home office tax deduction using the simplified ($5/sq ft) or regular method. See your potential deduction based on office size and expenses.

Self-Employment Tax Calculator

Calculate your self-employment tax (Social Security + Medicare) as a sole proprietor, freelancer, or single-member LLC. Not for S-Corps or C-Corps.

Vehicle Mileage Deduction Calculator

Compare the standard mileage rate (67¢/mile) vs actual expense method to maximize your vehicle tax deduction. See which method saves you more.

Payroll Tax Calculator

Calculate employer payroll taxes including Social Security, Medicare (FICA), and FUTA. See the true cost of employment beyond wages.

Meal Deduction Calculator

Calculate your business meal tax deduction. Business meals are 50% deductible when they have a clear business purpose.

R&D Tax Credit Calculator

Estimate your federal R&D tax credit based on qualified research expenses including wages, supplies, and contractor costs.

S-Corp Compensation Calculator

Plan your S-Corp compensation strategy. See how your salary and distribution split affects your FICA tax obligation.

License These Tax & Accounting Calculators for Your Website

These calculators are fully brandable and can be embedded on your website to engage visitors, demonstrate value, and generate qualified leads. White-label with your branding, colors, and style.

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What Are Tax & Accounting Calculators?

Tax and accounting calculators help businesses, accountants, and tax professionals estimate corporate tax liability, compare tax obligations across jurisdictions, and plan for tax-efficient business structures. Whether you're calculating state corporate income tax, comparing effective tax rates, or planning a business relocation, these tools provide data-driven insights for informed decision-making. Business owners and tax professionals use these calculators to estimate state corporate income tax obligations, compare tax rates across different states, evaluate the tax implications of business decisions, plan for quarterly estimated payments, and identify tax-advantaged business structures.

Licensable & Brandable for Your Website

These calculators are fully licensable and can be branded to match your website's design. Accounting firms, tax advisory practices, CPAs, and financial planning companies embed them to engage clients, demonstrate expertise, and generate qualified leads. Each calculator can be white-labeled with your branding, colors, and style.

Key Concepts

Self-Employment Tax

Self-employment tax is the Social Security and Medicare tax that self-employed individuals pay on their net earnings. The current rate is 15.3%—comprising 12.4% for Social Security (up to the wage base limit) and 2.9% for Medicare. This covers both the employer and employee portions of FICA taxes that W-2 employees split with their employers. Self-employed individuals can deduct the employer-equivalent portion (7.65%) when calculating adjusted gross income, reducing their overall tax burden.

Try our Self-Employment Tax Calculator

1099 Contractor Taxes

1099 contractors receive income without tax withholding and are responsible for paying their own income tax plus self-employment tax. Unlike W-2 employees, contractors must make quarterly estimated tax payments to avoid underpayment penalties. The 1099-NEC form reports non-employee compensation of $600 or more. Contractors can reduce taxable income through business expense deductions including home office, mileage, equipment, and health insurance premiums.

Try our 1099 Contractor Taxes Calculator

Home Office Deduction

The home office deduction allows self-employed individuals to deduct expenses for the portion of their home used exclusively and regularly for business. Two methods exist: the simplified method ($5 per square foot, up to 300 square feet for a maximum $1,500 deduction) or the regular method (actual expenses proportional to office space percentage). The regular method requires tracking utilities, rent/mortgage interest, insurance, repairs, and depreciation.

Try our Home Office Deduction Calculator

Estimated Tax Payments

Estimated tax payments are quarterly payments made by self-employed individuals and those with significant non-wage income to cover income tax and self-employment tax. Due dates are April 15, June 15, September 15, and January 15. Taxpayers must pay at least 90% of current year tax or 100% of prior year tax (110% for high earners) to avoid underpayment penalties. Calculate each payment as 25% of your expected annual tax liability.

Try our Estimated Tax Payments Calculator

Common Use Cases

Compare corporate income tax rates across different states to evaluate the tax implications of business location decisions. Understand how state tax burdens vary from 0% in Texas to over 8% in California and New York.
Analyze how different business structures affect tax liability. Compare C-corp taxation across jurisdictions to inform entity selection and state of incorporation decisions.
Estimate quarterly corporate tax payments based on projected annual income. Avoid underpayment penalties by accurately calculating estimated tax obligations throughout the year.
Accounting firms and tax advisors use these calculators during client consultations to illustrate tax implications and demonstrate the value of strategic tax planning.

Frequently Asked Questions

Corporate income tax is a tax imposed by states and the federal government on the profits of corporations. Each state sets its own corporate tax rate, ranging from 0% in states like Texas and Nevada to over 9% in states like New Jersey and Minnesota. Our Corporate Income Tax Calculator helps businesses estimate their state tax liability.
Several states have no corporate income tax, including Texas, Nevada, Ohio, Washington, and South Dakota. However, some of these states impose other business taxes such as gross receipts taxes or franchise taxes. Texas, for example, has a franchise tax (margin tax) that functions similarly to an income tax.
Corporate income tax is typically calculated by multiplying your taxable income by the applicable state tax rate. Some states have tiered rates based on income levels, while others apply exemptions for the first portion of income. Use our calculator to see the effective rate and actual tax owed for your specific situation.
The statutory tax rate is the official rate set by law, while the effective tax rate is the actual percentage of income paid after accounting for exemptions, deductions, and credits. For example, Florida has a 5.5% statutory rate but exempts the first $50,000 of income, resulting in a lower effective rate for smaller businesses.
Yes! All tax and accounting calculators are fully licensable and can be white-labeled with your branding. Accounting firms, tax advisory services, and financial planning websites embed them to engage clients and demonstrate expertise. Book a meeting to discuss licensing and customization options.

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