Quarterly Estimated Tax Calculator
Find your quarterly estimated tax payment.
Enter your values
ⓘ Live results
Results
- Self-employment tax
- $12,716.60
- Estimated income tax
- $16,200.00
- Total annual tax estimate
- $28,916.60
- Quarterly payment
- $7,229.15
Quick answer
Estimated taxes are typically paid in four installments through the year, based on projected income tax plus self-employment tax on net self-employment earnings.
Quarterly payment = (income tax + SE tax) / 4
How to use the Quarterly Estimated Tax Calculator
- 1Enter your projected annual net self-employment income.
- 2Enter your estimated effective income tax rate and the self-employment tax rate (15.3% covers Social Security and Medicare).
- 3Divide the total by four for each quarterly payment, due on the IRS's quarterly deadlines.
Worked example
Using the values the calculator loads with:
Inputs
- Projected annual net self-employment income90000 $
- Estimated effective income tax rate18 %
- Self-employment tax rate15.3 %
- SE tax deduction adjustment92.35 % of net income subject to SE tax
Results
- Self-employment tax$12,716.60
- Estimated income tax$16,200.00
- Total annual tax estimate$28,916.60
- Quarterly payment$7,229.15
Frequently asked questions
What happens if I underpay?
The IRS can charge an underpayment penalty unless you meet a safe harbor, such as paying 100-110% of last year's total tax.
Can I deduct half of self-employment tax?
Yes — half of SE tax is deductible from income for federal income tax purposes, which this calculator approximates via the adjustment factor.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.