US tax calculators for accounting firms
Quick estimates for common federal, state and small-business questions. These tools support conversations; they do not replace professional advice or filing software.
Sales Tax Calculator
Add or back out state and local sales tax at any combined rate in one step.
Open calculator →Self-Employment Tax Calculator
Estimate Social Security and Medicare tax on Schedule C net profit.
Open calculator →Federal Income Tax Calculator
Estimate federal income tax, effective rate and take-home pay from gross income.
Open calculator →Quarterly Estimated Tax Calculator
Work out safe-harbor quarterly payments so clients avoid an underpayment penalty.
Open calculator →Capital Gains Tax Calculator
Compare short-term and long-term federal capital gains on a disposal.
Open calculator →Employer Payroll Tax Calculator
See the employer cost of FICA and FUTA on top of an employee's wages.
Open calculator →S-Corp Salary vs Distribution Calculator
Compare self-employment tax on a Schedule C with a reasonable S-corp salary split.
Open calculator →Mileage Deduction Calculator
Value business mileage at the standard statutory rate for the year.
Open calculator →Home Office Deduction Calculator
Compare the simplified $5 per square foot method with the actual expense method.
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