Free Tool
No employer withholding your taxes means it's on you, four times a year. Figure out what to send the IRS each quarter so April doesn't come with a penalty attached.
Net, after business expenses — what actually shows up as profit.
If you know it, we can use whichever safe-harbor rule saves you more.
Est. Total Tax
$18,830
income tax + SE tax
Safe Harbor Target
$16,947
pay this much, penalty-free
Pay Each Quarter
$4,237
This is an educational estimate, not tax advice. It uses the federal safe-harbor rule (pay the smaller of 90% of this year's tax or 100%/110% of last year's) so you avoid the underpayment penalty — it doesn't guarantee you won't owe more at filing time if your actual income comes in higher than estimated. It covers federal tax only, not state estimated payments, and assumes a single source of self-employment income. Consult with a tax professional before setting your actual payment amounts.