Calculate federal income tax, self-employment tax, quarterly reserve and take-home income from 1099 revenue and business deductions.
Estimate federal income tax, self-employment tax and a quarterly reserve from 1099 revenue, expenses, W-2 wages and withholding.
Net business profit = 1099 revenue − business expenses. Estimate SE tax, deduct its employer-equivalent half, then apply 2026 federal brackets after the standard deduction.Simplified 2026 federal estimate. State tax and many credits, phaseouts and deductions are not included.
IRS Schedule SE and 2026 federal parameters reviewed August 6, 2026
Start with business receipts
Subtract ordinary and necessary business costs
The planning base for Schedule C income
Multiply profit by 92.35%
Estimate self-employment tax and federal income tax
Subtract withholding and divide the remainder for planning
Net business profit = 1099 revenue − business expenses. Estimate SE tax, deduct its employer-equivalent half, then apply 2026 federal brackets after the standard deduction.
This combines a detailed SE-tax estimate with a simplified federal ordinary-income estimate. It can account for W-2 wages and withholding.
State income tax, most credits, itemized deductions, retirement contributions and exact QBI limitations are outside the default calculation.
Result: The calculator separates profit, SE tax, federal income tax, withholding, and the remaining quarterly reserve so a single percentage does not hide the moving parts.
Tax law depends on facts this tool cannot collect. Do not use the result as the sole basis for filing, withholding or payment decisions.
Self-employment and income tax generally start from net business profit after deductible business expenses, not gross 1099 revenue.
The calculator shows an estimated remaining annual amount and quarterly reserve after entered federal withholding. Your actual safe-harbor payment can depend on prior-year tax.
Each guide answers a different question and links back to the same transparent calculation.
Trace a freelancer estimate from $90,000 of receipts through business profit, self-employment tax, income-tax inputs, and quarterly cash planning.
Read the guide →Unpack the regular Schedule SE base, the Social Security and Medicare pieces, the wage-base interaction, and the employer-equivalent deduction.
Read the guide →Compare business profit with employee wages without ignoring employer payroll tax, benefits, expenses, withholding, or worker-classification rules.
Read the guide →Avoid confusing a cash reserve, an equal quarterly budget, a current-year estimate, and the federal required annual payment.
Read the guide →Calculate 2026 self-employment tax from net profit using the 92.35% base, Social Security limit and Medicare tax.
Estimate the smaller federal safe-harbor target, remaining annual payment and equal quarterly installments.
Calculate federal income tax by filing status, gross income and deductions, then see taxable income, effective rate and marginal bracket.