1099 Quarterly Tax Estimator
Estimate your self-employment and federal income taxes from your 1099 income, business expenses, and filing status — and see what to set aside each quarter.
Net profit
$0
Self-employment tax
15.3% on 92.35% of net profit (SS capped at wage base)
$0
½ SE-tax deduction
−$0
Standard deduction
Single
−$15,000
QBI deduction (20%)
Simplified; phase-outs not modeled
−$0
Taxable income
$0
Federal income tax
$0
Total annual estimated tax
$0
Estimated quarterly payment
$0
2025 quarterly due dates
Q1
Jan 1 – Mar 31
April 15, 2025
Q2
Apr 1 – May 31
June 16, 2025
Q3
Jun 1 – Aug 31
September 15, 2025
Q4
Sep 1 – Dec 31
January 15, 2026
Want to lower this tax bill?
Every $100 in tracked expenses saves you roughly $15 in taxes. Start tracking automatically with ReceiptSync — scan a receipt and the data syncs straight to your spreadsheet, so no deduction slips through.
How quarterly estimated taxes work
When you earn 1099 or self-employment income, no employer withholds taxes for you — so the IRS expects you to pay as you go, four times a year. If you'll owe $1,000 or more, paying quarterly keeps you out of underpayment penalties.
Your bill has two parts: self-employment tax (15.3% covering Social Security and Medicare) and federal income tax on your profit after the standard deduction, half your SE tax, and the QBI deduction. This estimator combines both and divides by four. For the full walkthrough, see our guide to quarterly estimated taxes for the self-employed, the best expense trackers for 1099 contractors, and the complete Schedule C expense categories guide.
The single biggest lever on this number is your deductions: every dollar of legitimate business expense you track lowers both taxes. That's why keeping every receipt matters.
This calculator is general information, not tax advice. Verify current figures and your specific situation with the IRS or a qualified tax professional.
Frequently asked questions
Who has to pay quarterly estimated taxes?
If you're self-employed or earn 1099 income and expect to owe $1,000 or more in tax for the year, the IRS generally expects you to pay estimated taxes four times a year — otherwise you can face an underpayment penalty.
How much should I set aside for 1099 taxes?
A common rule of thumb is 25–30% of your net profit, but it depends on your income and filing status. This tool gives a more precise estimate by combining self-employment tax with a simplified federal income tax based on your filing status.
How is self-employment tax calculated?
Self-employment tax is 15.3% (12.4% Social Security + 2.9% Medicare) applied to 92.35% of your net profit. The Social Security portion only applies up to the annual wage base; the Medicare portion has no cap. You also get to deduct half of your SE tax when figuring income tax.
Does this estimate include the QBI deduction?
Yes — it applies a simplified 20% Qualified Business Income deduction, which most sub-threshold Schedule C filers qualify for. It does not model the higher-income phase-outs or specified-service-business limits, so treat it as an estimate.
When are quarterly taxes due?
For a calendar year they're generally due April 15, June 15, September 15, and January 15 of the next year (shifting to the next business day on weekends/holidays). Check IRS Form 1040-ES for the exact dates.
Is this calculator free, and is it tax advice?
It's completely free with no signup. It's an estimate for planning only, not tax advice — verify with the IRS or a tax professional before making payments.