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Quarterly taxes for freelancers: what you owe and when

1. The four dates that matter

Estimated taxes are due roughly mid-April, mid-June, mid-September, and mid-January — the IRS collects as you earn, four times a year. See the exact 2026 deadlines and set reminders here. Miss one and the year doesn't end; you just catch up next quarter. But miss the pattern and the penalty notices start.

2. How to estimate what you owe

The honest method: project this year's freelance profit (income minus expenses), run it through last year's tax math, and divide by four. New freelancer with no history? Start with the set-aside rule — 25–30% of each payment into a separate account — and pay a quarter of that each deadline. Rough beats late: the penalty is for underpaying, and paying close is far better than paying nothing.

3. The safe-harbor rule (your get-out-of-penalty card)

The IRS waives the underpayment penalty if you pay at least 100% of last year's total tax (110% if your income was over $150k), split across the four quarters. First-year freelancer with no "last year"? You're in the one situation where there's no safe harbor — which is exactly why the set-aside habit matters most in year one.

4. What happens if you skip

Nothing dramatic at first. Then: an underpayment penalty (interest-rate-based, applied per quarter you underpaid) plus a large April bill you already spent. The penalty isn't ruinous — the April surprise is. The freelancers on IRS payment plans are almost always people who skipped quarterlies, not people who underpaid slightly.

5. Make it automatic

The system that survives: separate tax account, 25–30% moved on every payment, calendar reminders on the four dates, and the IRS Direct Pay bookmark ready. Ten minutes per quarter once the habit exists. Estimate your bill, then mark the dates.