Quarterly estimated taxes
If you’re self-employed, a freelancer, or run a small business without an employer withholding taxes from your paycheck, the IRS expects you to pay taxes as you earn — not just once a year in April. That’s where quarterly estimated taxes come in. Missing a deadline, or underpaying, can trigger penalties even if you pay everything you owe by the time you file your return. Here’s a complete, no-nonsense guide to the 2026 deadlines and how to stay on top of them.
What Are Quarterly Estimated Taxes?
Quarterly estimated taxes are periodic payments you make directly to the IRS to cover income tax and self-employment tax on earnings that aren’t subject to withholding — think freelance income, business profits, rental income, interest, dividends, and capital gains. Instead of paying everything at once when you file your annual return, you prepay it in four installments throughout the year.
The name «quarterly» is a bit misleading: the periods the IRS uses aren’t actually equal three-month quarters. As you’ll see below, the payment schedule is uneven, and that trips up a lot of first-time filers.
Who Needs to Pay Quarterly Estimated Taxes?
You generally need to make estimated tax payments if both of these apply to you:
- You expect to owe at least $1,000 in tax for the year, after subtracting withholding and refundable credits.
- Your withholding and credits are expected to cover less than the smaller of 90% of your current year’s tax liability or 100% of your prior year’s tax liability (110% if your prior-year adjusted gross income was over $150,000).
This typically includes:
- Freelancers and independent contractors (1099 income)
- Sole proprietors and single-member LLC owners
- Gig economy workers (rideshare, delivery, task-based platforms)
- Partners in partnerships and S-Corp shareholders receiving distributions
- Anyone with significant non-wage income (investments, rental income, side business)
If you also hold a W-2 job, you can sometimes avoid quarterly payments altogether by asking your employer to withhold extra tax from your paycheck instead — this counts the same as making payments evenly throughout the year in the eyes of the IRS.
The 2026 Quarterly Estimated Tax Deadlines
Here is the full federal schedule for the 2026 tax year:
| Payment | Due Date | Income Period Covered |
|---|---|---|
| Q1 | April 15, 2026 | January 1 – March 31, 2026 |
| Q2 | June 15, 2026 | April 1 – May 31, 2026 |
| Q3 | September 15, 2026 | June 1 – August 31, 2026 |
| Q4 | January 15, 2027 | September 1 – December 31, 2026 |
Notice that Q2 covers only two months of income but is due just two months after Q1, and Q4 covers four months. The IRS doesn’t divide the year into even three-month blocks — each «quarter» corresponds to a fixed income period with its own due date, and those periods are not equal in length.
If a due date falls on a weekend or federal holiday, the deadline automatically shifts to the next business day.
Special Case: Farmers and Fishermen
If more than two-thirds of your gross income comes from farming or fishing, you only need to make one estimated payment for the year, due January 15, 2027. If you file your return and pay your full tax due by March 1, you can skip estimated payments altogether.
How Much Should You Pay Each Quarter?
The simplest approach is to divide your total estimated tax liability for the year into four equal payments — 25% each. To estimate your total liability, you’ll need to project:
- Your expected net self-employment profit for the year
- Your self-employment tax (15.3% on 92.35% of your net profit, up to the annual Social Security wage base)
- Your expected federal income tax based on your total taxable income
- Any state estimated taxes you may also owe, which typically follow a similar (but separate) schedule
The IRS provides Form 1040-ES with worksheets to help you calculate this. Many freelancers find it easier to base their estimate on last year’s tax return and adjust for expected changes in income.
Safe Harbor Rules: How to Avoid Underpayment Penalties
You won’t owe an underpayment penalty if you pay at least one of the following amounts through withholding and estimated payments combined:
- 90% of your current year’s total tax liability, or
- 100% of your prior year’s total tax liability (110% if your prior-year adjusted gross income was above $150,000, or $75,000 if married filing separately)
This second option — known as the «safe harbor» — is popular among freelancers with unpredictable income, since it lets you base your payments on a known number (last year’s tax bill) rather than trying to perfectly predict a year that hasn’t happened yet.
What Happens If You Miss a Deadline or Underpay?
If you don’t pay enough by each due date, the IRS charges an underpayment penalty calculated separately for each quarter, based on the federal short-term interest rate plus 3 percentage points. The penalty accrues from the missed due date until the amount is paid — so the longer you wait, the more it adds up.
Importantly, the IRS treats each quarter independently. Overpaying in Q4 doesn’t erase a penalty from underpaying in Q1 — the shortfall in an earlier quarter still accrues its own penalty for the time it went unpaid, even if your total payments for the year end up correct.
How to Actually Make the Payment
You have several options for submitting quarterly payments:
- IRS Direct Pay — free, pays directly from your bank account, available on IRS.gov
- EFTPS (Electronic Federal Tax Payment System) — free, requires enrollment in advance
- IRS Online Account — lets you view your payment history and schedule payments
- Check or money order — mailed with a payment voucher from Form 1040-ES
- Credit or debit card — through an IRS-approved payment processor (usually involves a processing fee)
Whichever method you choose, keep confirmation records — you’ll want proof of payment dates if a discrepancy ever comes up.
Don’t Forget State Estimated Taxes
Most states with an income tax also require quarterly estimated payments, often on similar (but not always identical) due dates to the federal schedule. If you live in a state with income tax, check your state’s Department of Revenue website for its specific deadlines and thresholds — missing a state payment triggers its own separate penalty, independent of anything owed to the IRS.
A Practical Way to Stay on Track
Many freelancers find it easiest to set aside a percentage of every payment they receive — commonly 25-30% for combined federal income tax and self-employment tax, adjusted up or down based on their tax bracket and state — into a separate savings account earmarked only for taxes. That way, when each quarterly deadline arrives, the money is already set aside rather than competing with other expenses.
Quick Recap
- Quarterly estimated taxes are prepayments toward your annual income tax and self-employment tax, required if you expect to owe $1,000 or more for the year.
- The 2026 deadlines are April 15, June 15, September 15, 2026, and January 15, 2027 — and the periods they cover are not equal in length.
- You can avoid penalties by paying at least 90% of this year’s tax liability or 100% of last year’s (110% for higher earners) — the «safe harbor» rule.
- Each quarter is evaluated separately by the IRS, so an underpayment in one quarter still accrues its own penalty even if you make up for it later.
- Most states with income tax require their own separate quarterly payments.
Frequently Asked Questions
What if I only started freelancing partway through the year? You only owe estimated tax on income earned during the periods you were self-employed. If you didn’t have self-employment income in Q1, for example, you generally don’t owe an estimated payment for that quarter.
Can I pay more than 25% in one quarter and less in another? Yes, as long as your total payments by each due date meet the safe harbor thresholds for that point in the year. Many freelancers with seasonal income adjust their payments to match when they actually earn money, using the annualized income installment method (Schedule AI on Form 2210) rather than four equal payments.
Do I need to make estimated payments if I have a W-2 job too? Only if your combined withholding and estimated payments won’t cover your total expected tax liability. Increasing your W-2 withholding is often a simpler alternative to making separate estimated payments.
What happens if I overpay during the year? You’ll receive the excess back as a refund when you file your annual tax return, just like with regular withholding.
This article is for general informational purposes and reflects federal deadlines and rules for the 2026 tax year. State deadlines and thresholds vary — always confirm current requirements with the IRS, your state’s tax agency, or a qualified tax professional (CPA or Enrolled Agent) before making payments.