How to Use This Calculator
- Enter your annual freelance income
- Add your business expenses and deductions
- Include retirement contributions
- Select your state and filing status
- Add any other income and withholding
- Include previous quarterly payments
- View detailed tax breakdown and quarterly estimates
Income Calculation
1. Adjusted Gross Income (AGI) =
• Annual Freelance Income
• + Other Income
• - Business Expenses
• - Retirement Contributions
• - Other Deductions
2. Net Self-Employment Income = AGI - Business Expenses
Tax Calculations
1. Self-Employment Tax = Net Self-Employment Income × 15.3%
• 12.4% for Social Security
• 2.9% for Medicare
• 50% of SE tax is deductible
2. Federal Income Tax:
• Calculated using 2024 tax brackets
• Progressive rates from 10% to 37%
• Based on taxable income after deductions
3. State Income Tax = Taxable Income × State Tax Rate
• Rate varies by state (0% to 11%)
• Some states have no income tax
Quarterly Estimated Payments
1. Total Tax Due = Federal Tax + State Tax + Self-Employment Tax
2. Remaining Tax = Total Tax - Other Income Withholding - Previous Payments
3. Quarterly Payment = Remaining Tax ÷ 4
Payment Due Dates:
• Q1: April 15
• Q2: June 15
• Q3: September 15
• Q4: January 15 (next year)
Important Notes:
- This is an estimate based on 2024 tax rates and brackets
- Actual tax liability may vary based on specific circumstances
- Consult a tax professional for personalized advice
- Keep records of all income and expenses for tax filing
- Consider additional deductions and credits that may apply