Guide for freelancers
Quarterly Estimated Taxes for Freelancers: A Step-by-Step Guide
The part nobody warns you about when you start freelancing: the IRS wants its money four times a year, not once. Here's how to calculate it, pay it, and avoid a penalty.
When you're on a W-2, taxes come out before you ever see the money. As a freelancer, nothing gets withheld — which means you're on the hook for sending the IRS a share of your income yourself, on a schedule that has nothing to do with when you actually get paid by clients. This guide covers the deadlines, the safe harbor rule that protects you from guessing wrong, and how to actually send the payment.
Do you need to pay quarterly?
Generally, yes, if you expect to owe $1,000 or more in federal tax for the year after subtracting any withholding and credits. Most freelancers with no W-2 job on the side fall into this category the moment their income is steady enough to matter.
The 2026 due dates (and why they're not real quarters)
The IRS calls these "quarterly" payments, but the periods they cover are uneven. Here are the 2026 deadlines:
- April 15, 2026 — covers income from January through March.
- June 15, 2026 — covers only April and May (a two-month window, not three).
- September 15, 2026 — covers June through August.
- January 15, 2027 — covers September through December.
That mismatched second period catches a lot of first-year freelancers off guard — it feels early because it is. If a due date falls on a weekend or holiday, it moves to the next business day automatically.
The safe harbor rule: how to not overthink this
You don't have to predict your income perfectly. The safe harbor rule protects you from an underpayment penalty as long as you pay the smaller of:
- 90% of this year's total tax, or
- 100% of last year's total tax (110% if your prior-year adjusted gross income was over $150,000, or $75,000 if married filing separately).
The simplest approach: pull up last year's tax return, find your total tax (Form 1040, line 24), multiply by 100% (or 110% if you're a high earner), and divide by four. That's your minimum safe quarterly payment — even if this year turns out to be a much better one.
The tradeoff: if your income grows a lot, safe harbor might mean underpaying compared to what you'll actually owe. That's fine — you won't owe a penalty, just a larger bill in April. What it protects you from is the penalty, not the tax itself.
How to actually calculate the payment
If you'd rather estimate directly instead of using last year's numbers, Form 1040-ES walks through it:
- Estimate your total income for the year from all sources — freelance income, any side income, interest, capital gains.
- Subtract your expected deductions: the standard deduction, half of your self-employment tax, and the QBI deduction if it applies.
- Apply the current tax brackets to get your estimated income tax.
- Add self-employment tax (15.3% on your net earnings, applied the same way it's calculated on Schedule SE).
- Divide the total by four for your quarterly amount.
If your income is uneven throughout the year — a big project lands in Q4, for example — the annualized income installment method (Form 2210, Schedule AI) lets you match each payment to when the income actually arrived, instead of a flat 25% every quarter.
How to pay
You don't file Form 1040-ES with the IRS — it's a worksheet you use to calculate the amount, then you send the payment through one of these:
- IRS Direct Pay — free, from your bank account, no account setup required.
- EFTPS — free, lets you schedule payments up to 365 days in advance.
- IRS2Go app or debit/credit card (usually carries a processing fee).
- Mail — a check with the payment voucher from Form 1040-ES.
Figure out what to charge before you worry about taxes
Self-employment tax, federal tax, and the QBI deduction — already built into the number.
Go to the free calculatorWhat happens if you skip a payment
The penalty is calculated separately for each quarter, based on how much you underpaid and for how long, using the IRS's published interest rate for that period. Paying more in a later quarter doesn't erase an earlier shortfall — each period is judged on its own. The one exception: if you file your full return and pay everything owed by January 31 of the following year, you can skip the January 15 payment entirely without a penalty.
Frequently asked questions
When are quarterly estimated taxes due in 2026?
April 15, June 15, and September 15, 2026, plus January 15, 2027 for the fourth payment. These IRS "quarters" aren't equal calendar quarters — the second period covers only April and May.
What is the safe harbor rule?
You avoid an underpayment penalty if you pay the smaller of 90% of this year's total tax or 100% of last year's total tax (110% if your prior-year AGI was over $150,000, or $75,000 if married filing separately).
Do I have to make quarterly payments?
Generally yes, if you expect to owe at least $1,000 in federal tax for the year after subtracting withholding and credits. Most freelancers with no W-2 withholding fall into this category.
How do I calculate my quarterly payment amount?
The simplest method is the prior-year safe harbor: take your total tax from last year's return, multiply by 100% (or 110% if you're a high earner), and divide by four.
Can I skip the January payment?
Yes, if you file your full return and pay everything you owe by January 31 of the following year, you can skip the January 15 estimated payment without a penalty.
Based on IRC §6654, IRS Form 1040-ES (2026), and Publication 505. This is not tax advice. Talk to a CPA or check irs.gov for your specific situation. State estimated tax rules are separate and vary by state.