Quarterly Tax Calculator
Determine your four quarterly estimated tax payment amounts (Form 1040-ES) to satisfy IRS safe harbor rules and avoid penalties.
Business Income & Expenses
Total payments received from clients or platforms before expenses.
Ordinary and necessary expenses: supplies, software, health insurance.
W-2 wages or spouse earnings that push you into higher tax brackets.
Pay every quarter: April 15, June 15, Sept 15, Jan 15
1099 & SECA Tax Breakdown
- Gross 1099 / Business Revenue
- $90,000
- Deductible Business Expenses Mileage, software, equipment, home office
- -$15,000
- Net Taxable Profit (Schedule C) IRS applies SECA to 92.35% of this amount
- $75,000
- Self-Employment Tax (SECA 15.3%) SS: $8,589 • Medicare: $2,009
- -$10,597
- 50% SE Tax Deduction (AGI Benefit) Deducted above-the-line from federal tax
- $5,299
- Estimated Federal Income Tax Standard deduction subtracted
- -$6,504
- Estimated State Income Tax CA state tax estimate
- -$3,220
- Total Estimated Tax Obligation
- -$20,322
- Estimated Net Take-Home Profit
- $54,678
PayCalcly provides estimates for informational purposes only. Tax calculations may vary based on individual circumstances. This site is not affiliated with or endorsed by the IRS.
How It Works
Computes quarterly estimated tax payments (Form 1040-ES) to satisfy IRS safe harbor rules and avoid underpayment interest and penalties for individuals with non-wage income.
Calculation Example
If your projected annual self-employment and income tax liability is $16,000, your recommended safe quarterly voucher payment is $4,000 sent on each IRS deadline.
Frequently Asked Questions
Yes. The IRS offers free electronic payments via IRS Direct Pay (bank account) or the Electronic Federal Tax Payment System (EFTPS).
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