1099 Tax Calculator
A 1099 tax calculator is a free online tool that estimates the federal tax on your 1099 contractor income, including the 15.3% self-employment tax and federal income tax. It shows your total SE tax, deductible half, after-tax income, and quarterly estimated payment. Free, no sign-up required.
1099 Income & Deductions
Quarterly payment estimate shown (annual tax ÷ 4).
Your 2026 1099 Tax Estimate
Social Security + Medicare
12.4% of net earnings
2.9% of net earnings
After deductible half
SE + income tax
Income minus all taxes
Total burden ÷ income
Per quarter estimate
How to Use This Calculator
- 1Enter your 1099 Income — your expected annual net income from contracting (Schedule C profit), which is your 1099 revenue minus deductible business expenses.
- 2Set your Itemized Deductions. If your itemized deductions are below the standard deduction, the calculator automatically uses the larger standard deduction for the income-tax portion.
- 3Choose your Filing Status (Single or Married Filing Jointly) — this affects your income tax brackets and standard deduction.
- 4Toggle Quarterly Estimated Payments on to see your per-quarter payment estimate (annual tax ÷ 4), with due dates of April 15, June 15, September 15, and January 15.
- 5Review the SE Tax metric card, which shows your total self-employment tax (Social Security + Medicare) — the 15.3% tax unique to 1099 contractors.
- 6Check the Federal Income Tax metric, which is computed after the deductible half of SE tax is subtracted from your income.
- 7Examine the Total Tax Burden metric — your combined SE tax + federal income tax, the bulk of your federal obligation.
- 8Read the Quarterly Payment metric to plan cash flow — set aside this amount each quarter to avoid IRS underpayment penalties.
- 9Review the bar chart to see how your 1099 income splits between Social Security tax, Medicare tax, federal income tax, and after-tax income.
- 10Use the AI insights to understand your combined tax burden, SE-vs-income split, quarterly payment sizing, income tier, and after-tax retention rate.
How It's Calculated
1099 contractor tax (2026):
netEarnings = income1099 × 0.9235
socialSecurityTax = 0.124 × min(netEarnings, $176,100)
medicareTax = 0.029 × netEarnings
totalSETax = socialSecurityTax + medicareTax
deductibleHalf = totalSETax / 2
Federal income tax on remaining income:
grossIncomeForIncomeTax = income1099 − deductibleHalf
deductions = max(standardDeduction, itemizedDeductions)
standardDeduction (2026): $8,350 single, $16,700 married jointly
taxableIncome = max(0, grossIncomeForIncomeTax − deductions)
incomeTax = Σ (min(taxableIncome, b.max) − b.min) × b.rate per bracket
Combined totals:
totalTaxBurden = totalSETax + incomeTax
effectiveRate = totalTaxBurden / income1099
afterTaxIncome = income1099 − totalTaxBurden
quarterlyPayment = totalTaxBurden / 4
2026 single income brackets (projected, post-TCJA sunset):
10% $0 – $12,100
15% $12,100 – $48,550
25% $48,550 – $117,250
28% $117,250 – $224,500
33% $224,500 – $515,800
35% $515,800 – $618,700
39.6% $618,700+
Example: $80,000 1099 income, single, $14,600 itemized deductions.
netEarnings = $80,000 × 0.9235 = $73,880
socialSecurityTax = 12.4% × $73,880 = $9,161.12
medicareTax = 2.9% × $73,880 = $2,142.52
totalSETax = $11,303.64
deductibleHalf = $5,651.82
taxableIncome = $80,000 − $5,651.82 − max($8,350, $14,600) = $59,748.18
incomeTax = 10%×$12,100 + 15%×$36,450 + 25%×$11,198.18 ≈ $9,477.05
totalTaxBurden ≈ $20,780.69
effectiveRate ≈ 25.98%
afterTaxIncome ≈ $59,219.31
quarterlyPayment ≈ $5,195.17 (per quarter)Key Terms
Frequently Asked Questions
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