Taxes Calculators
Last updated: October 2026
Business Tax Calculator
Estimate the 2026 federal tax on a small business's profit by entity type β sole proprietorship, partnership, S corporation or C corporation β including self-employment or payroll tax, the owner's income tax and the 20% QBI deduction.
Sales Tax Calculator
Calculate the sales tax owed on an ecommerce purchase given the pre-tax order amount and the applicable tax rate.
Tax Refund Calculator
Estimate your 2026 federal tax refund or balance due from your income tax before credits, withholding, estimated payments, the Child Tax Credit (including its refundable part) and the Earned Income Tax Credit.
Tax Bracket Calculator
Find out exactly how much federal, state, and payroll tax you owe by entering your taxable income and filing status.
IRS Penalty Calculator
Estimate IRS penalties for late filing, late payment, or underpayment of estimated taxes based on the amount owed and how many days past the deadline you are.