Here's how to pay quarterly estimated taxes: add up the income tax and self-employment tax you expect to owe for the current tax year, divide it into four payments, and send each one to the IRS by its due date using IRS Direct Pay, EFTPS, or a 1040-ES form voucher. If you're self-employed, freelancing, or running a side hustle and you expect to owe $1,000 or more when you file, the IRS wants its money four times a year, not once. Skip the payments and you can owe penalties even if you pay your tax in full at filing time. This guide covers who has to pay, the 2026 due dates, how much to send, and the exact ways to make estimated tax payments. New to working for yourself? Start with our complete beginner guide to freelancing, then come back here.
What are quarterly estimated taxes, and who has to pay them?
Quarterly estimated taxes are prepayments of the income tax and self-employment tax you owe on money that has no withholding. A regular paycheck has taxes pulled out before it hits your bank account. Freelance income, 1099 contract work, side-hustle cash, business profit, investment gains, and rental income usually don't. Both individuals and small businesses that earn this kind of untaxed income make estimated tax payments, because the IRS wants its share as you earn it, spread across four payments through the year.
Most self-employed people owe estimated taxes. The federal rule: you generally have to pay if you expect to owe at least $1,000 in tax for the current tax year after subtracting your withholding and refundable credits, according to the IRS. That threshold catches most full-time freelancers and a lot of side hustlers too. Got a W-2 job and a side gig? You can owe estimated tax on the side income even though your day job withholds plenty on its own.
Skip the payments only if your paycheck withholding will already cover at least 90% of this year's tax or 100% of last year's, which rarely happens once you earn real money outside a W-2. When in doubt, run the numbers on the federal Form 1040-ES or talk to a tax pro about your own situation.
The 2026 quarterly estimated tax due dates
The 2026 tax year splits quarterly taxes into four payment periods, and each one has a hard deadline. Here are the dates straight from IRS Form 1040-ES for the 2026 tax year. Mark all four so you pay estimated taxes on time throughout the year.
| Quarter | Income earned | Payment due date |
|---|---|---|
| Q1 | Jan 1 to Mar 31, 2026 | April 15, 2026 |
| Q2 | Apr 1 to May 31, 2026 | June 15, 2026 |
| Q3 | Jun 1 to Aug 31, 2026 | September 15, 2026 |
| Q4 | Sep 1 to Dec 31, 2026 | January 15, 2027 |
Two things trip people up. The “quarters” aren't even three-month blocks, so Q2 covers only two months and Q3 covers three. And the last payment lands in the next calendar year. You can skip the January 15, 2027 payment if you file your full 2026 return and pay everything you owe by February 1, 2027. If a due date falls on a weekend or legal holiday, it moves to the next business day. All four 2026 dates land on weekdays, so they hold as listed.
How much should you pay each quarter?
Pay enough to hit a safe harbor, and the IRS won't charge you a penalty even if you end up owing more in April. The safe harbor is the smaller of two numbers, per the IRS:
- 90% of this year's total tax, or
- 100% of your prior year total tax (it jumps to 110% if your prior year adjusted gross income was over $150,000, or $75,000 if married filing separately).
The prior year rule is the easy button for quarterly taxes. Take the total tax from your prior year return, divide by four, and pay that amount each quarter. Base your payments on the prior year and you're covered against the penalty no matter how much your income grows this year. The catch: you'll still owe the difference in April if you earn more than the prior year, so set the extra aside throughout the year.
Got steady income? The simpler move is to estimate this year's total tax, split it in four, and make an equal estimated tax payment each time. A lot of freelancers set aside 25% to 30% of every payment they collect into a separate savings account, then pay their estimated tax payments from that account each quarter. That single habit keeps a tax bill from wrecking your cash flow. For the deductions that lower the amount you're estimating, see our guide to deducting small business expenses.
How to pay quarterly estimated taxes, step by step
The fastest way to pay quarterly estimated taxes is online and free, directly to the IRS. These steps work for individuals and businesses alike. Here's the process from start to finish.
- Estimate your tax for the year. Use Form 1040-ES or last year's return to get a number, then divide by four. Include both income tax and self-employment tax.
- Pick how you'll pay. IRS Direct Pay sends money straight from your bank account with no fee and no account to set up. EFTPS (the Electronic Federal Tax Payment System) is free too and keeps a record of every payment, which is handy for an individual running a business. You can also pay by debit or credit card for a processing fee, or mail a paper 1040-ES voucher with a check or money order.
- Choose the right tax year and reason. When you pay, select “estimated tax” and the 2026 tax year. Picking the wrong year is the most common mistake, and it sends your money to the wrong place.
- Pay by the deadline. Send each payment on or before its due date from the table above. Online payments post fast. A mailed check counts as on time by its postmark date.
- Save the confirmation. Keep the confirmation number or canceled check. You'll report your total estimated payments when you file, and the record settles any dispute.
You don't have to split your payments across the four methods. Pick one, set a reminder for each due date, and run the same play every quarter. Most people who pay estimated taxes settle on IRS Direct Pay or EFTPS and never look back, since both make a quarterly tax payment in about two minutes.
How self-employment tax changes your estimate
Self-employment tax is the part most new freelancers forget, and it's why your estimated payments are bigger than you'd guess. When you work for yourself, you pay both the employee and employer halves of Social Security and Medicare. The combined self-employment tax rate is 15.3%, made up of 12.4% for Social Security and 2.9% for Medicare, per IRS Tax Topic 554.
- You apply the rate to 92.35% of your net self-employment earnings, not the full amount.
- The 12.4% Social Security portion applies only up to the wage base, which is $184,500 for 2026, according to the Social Security Administration. Earnings above that aren't hit with the Social Security piece.
- The 2.9% Medicare portion has no cap. It applies to all your net earnings.
- An extra 0.9% Additional Medicare Tax applies to earnings over $200,000 if you're single or $250,000 if you're married filing jointly.
- You can deduct half of your self-employment tax as an adjustment to income, which lowers your income tax.
Add self-employment tax to your regular income tax, and that total is what you're splitting into four estimated payments. This is why setting aside 25% to 30% is a sane starting point for a lot of freelancers. Once you're self-employed, also look at how that income affects your retirement savings options, since a SEP IRA or Solo 401(k) contribution can cut your taxable income.
How to avoid the underpayment penalty
Avoid the underpayment penalty by hitting a safe harbor and paying on time, every quarter. The IRS charges penalties when you pay too little or pay late, calculated like interest on the shortfall for the time it stayed unpaid. Paying everything in April doesn't erase a penalty for missing the earlier estimated tax payments.
A few moves keep you clean. Pay 100% (or 110% for higher earners) of last year's tax to lock in the safe harbor. Earning unevenly? Pay more in the quarters you earn more, since the IRS expects payments to track when you actually made the money. And if you also have a W-2 job, bump up its withholding to cover the side income, because withholding counts as paid evenly through the year even if you boost it late. A few of these basics show up in our tax tips for self-employed people.
Already behind? The IRS lets individuals and businesses set up a payment plan to pay a balance over time, with interest and fees on the amount owed, so falling behind isn't the end of the world. The cleaner path is to make estimated tax payments on schedule so you never carry a balance into the next current tax year. Pay your tax as you earn and you skip the plan, the interest, and the stress.
Frequently asked questions about quarterly estimated taxes
The bottom line
Paying quarterly estimated taxes comes down to a simple loop: estimate what you'll owe, set aside a slice of every payment you collect, and send the IRS its share by April 15, June 15, September 15, and the following January 15. Hit a safe harbor, pay on time, and you'll never sweat a penalty or a surprise April bill. Build the habit once and it runs on autopilot. The numbers here come from the IRS and the Social Security Administration, but your own situation can have wrinkles, so confirm the specifics with a tax pro when it counts.
For more on running your money as your own boss, read our complete beginner guide to freelancing, our take on what to consider before going self-employed, and the rest of the Personal Profitability taxes archive. Want one money win in your inbox each week? Visit the Personal Profitability homepage to subscribe.
