1099 income does not withhold federal income tax or self-employment tax for you. Four times a year the IRS expects a payment that roughly covers what you will owe.
Enter your expected 1099 gross and expenses in the calculator. Add the federal tax and SE tax from the breakdown, divide by four, and you have a starting quarterly number. Bump it up if you also owe state estimates.
Estimate from your 1099 numbers
Then grab the Going 1099 checklist for a simple set-aside system.
FAQ
When are quarterly estimates due?
For most people: mid-April, mid-June, mid-September, and mid-January of the following year. Check IRS Form 1040-ES for the exact dates.
How much should I set aside?
Many freelancers start with 25–35% of net profit. Your real rate depends on filing status, other income, and deductions. Use the calculator’s federal + SE tax lines as a guide.
Do I still need estimates on a side hustle?
If you expect to owe $1,000 or more when you file, estimates (or extra W-2 withholding) are usually required.