Quarterly tax payments are advance payments you send to the IRS four times a year if you owe more than a small amount in taxes and don't have an employer withholding from your paycheck

If you're self-employed, a freelancer, or earn income that isn't subject to withholding, the IRS expects you to pay taxes throughout the year rather than in one lump sum on April 15. These payments are called estimated tax payments, and they're due on specific dates: April 15, June 15, September 15, and January 15 of the following year. Missing these payments can result in penalties and interest, even if you ultimately owe nothing when you file your return.

The core reason for quarterly payments is that the tax system is designed to collect money as income is earned, not after the fact. When you work for an employer, they withhold taxes from each paycheck. When you work for yourself, you have to do that withholding yourself by sending in estimated payments on schedule.

Key Takeaways

  • Estimated tax payments are due on April 15, June 15, September 15, and January 15, and you can pay them online through IRS Direct Pay, the Electronic Federal Tax Payment System (EFTPS), or by credit card through an approved payment processor.
  • You calculate what you owe by estimating your total income for the year, subtracting deductions, and dividing the resulting tax by four — or you can use IRS Form 1040-ES to walk through the calculation step by step.
  • If you underpay or skip payments, the IRS will charge you penalties and interest when you file your return, even if you ultimately owe no tax or are owed a refund.
  • You don't have to make quarterly payments if your expected tax liability is under $1,000 for the year, or if you had no tax liability the prior year and are a U.S. citizen or resident alien.
  • Your first payment covers January through March income, your second covers April through June, your third covers July through September, and your fourth covers October through December.

When you have to make quarterly payments

You must make estimated tax payments if you expect to owe $1,000 or more in federal income tax for the year after subtracting any withholding and refundable credits. This threshold applies to most self-employed people, independent contractors, and anyone with significant investment income, rental income, or other sources not subject to withholding.

There is one exception: if you had zero tax liability in the prior year and you are a U.S. citizen or resident alien, you do not have to make estimated payments for the current year. This exception is useful for people starting a business or transitioning to self-employment, but it only applies once — if you owed tax last year, you must pay this year even if you expect to owe less.

If you're unsure whether you cross the $1,000 threshold, the safest approach is to calculate your estimated tax using Form 1040-ES and make the payment. The penalty for overpaying is zero; the penalty for underpaying can be substantial.

How to calculate your estimated tax payment

The IRS provides Form 1040-ES, a worksheet that walks you through the calculation. You estimate your total income for the year, subtract deductions you expect to claim, multiply the result by your expected tax rate, and divide by four. The form includes worksheets for different types of income and helps you account for credits like the Earned Income Tax Credit or Child Tax Credit.

If you're new to self-employment, estimate conservatively. Use your actual income from the first quarter if you have it, or project based on contracts you've signed or historical rates if you're repeating work. If you're unsure, overestimate slightly — you'll get the overage back as a refund when you file your return in April.

For people with highly variable income, the IRS allows you to pay different amounts each quarter based on actual income earned in that quarter, rather than dividing the year's total evenly. This is called the annualized installment method and is calculated on Form 2210. It can lower your payments in slow quarters and raise them in busy ones, which is more accurate if your income is uneven.

If you made a mistake in your estimate, you can adjust your remaining quarterly payments. There's no penalty for changing your estimate mid-year — the IRS only penalizes underpayment, not recalculation.

How to submit your quarterly payment

You have three main ways to pay: IRS Direct Pay (free, online, at irs.gov), EFTPS (Electronic Federal Tax Payment System, also free, requires enrollment), or a credit or debit card through an approved payment processor (charges a fee, typically 1.87% to 2% of the payment). Direct Pay is the fastest and cheapest option if you have a bank account and can pay online.

When you pay, you'll need your Social Security number or Employer Identification Number (EIN), your filing status, and the tax year you're paying for. The system will ask you which form you're paying under — for estimated tax, you're paying under Form 1040 (individual income tax), not Form 1120 (business tax) or any other form.

You can pay up to 120 days before the due date, which means you can pay your Q2 payment as early as March 15 if you want to. Paying early doesn't hurt, and it can be useful if you're worried about missing the important date or want to spread your cash flow differently.

Keep a record of your confirmation number and payment date. The IRS will credit the payment to your account, but having proof is useful if there's ever a discrepancy.

What happens if you miss a payment or pay late

If you don't pay by the due date, the IRS charges you underpayment penalties and interest. The penalty is calculated quarterly and compounds, so missing multiple payments costs more than missing one. The interest rate changes each quarter and is currently in the range of 8% annually, though this varies.

You are not penalized if you underpay by a small amount — specifically, if your total payments for the year are at least 90% of your current year's tax liability, or 100% of your prior year's liability (110% if your prior year adjusted gross income was over $150,000), you avoid the penalty. This is called the safe harbor rule. It means you can estimate conservatively and still avoid penalties as long as you're reasonably close.

If you discover you've underpaid after the fact, you can still file your return and pay the full amount owed. The IRS will calculate the penalty based on how much you underpaid and for how long. Paying as soon as you realize the mistake minimizes the interest that accrues.

Adjusting payments if your income changes

If your income is higher or lower than you estimated, you can adjust your remaining quarterly payments. There's no penalty for changing your estimate, and the IRS expects you to do this if circumstances change significantly.

For example, if you estimated $60,000 in income but by June you've only earned $20,000, you can lower your Q3 and Q4 payments. Conversely, if you've earned $50,000 by June and expected only $60,000 for the year, you should raise your remaining payments. Recalculate using Form 1040-ES and pay the new amount for your next due date.

This flexibility is especially important for people with seasonal income or variable work. You're not locked into your first estimate — you can adjust as the year unfolds and you have better information.

Quarterly payment important date and what to do if a important date falls on a weekend

The four due dates are April 15, June 15, September 15, and January 15. If a due date falls on a weekend or federal holiday, the important date moves to the next business day. For example, if April 15 falls on a Saturday, your payment is due on Monday, April 17.

The IRS publishes the adjusted important date each year on irs.gov. If you're paying by mail, the postmark date is what counts, so mail your payment a few days early. If you're paying online through Direct Pay or EFTPS, the payment must be submitted by 11:59 p.m. Eastern Time on the due date.

Mark all four dates on your calendar or set phone reminders. Missing even one payment triggers penalties, and the longer you wait to catch up, the more interest accrues.

Frequently Asked Questions

Do I have to make quarterly payments if I'm incorporated as an S-corp or LLC?

It depends on how your business is taxed. If your LLC or S-corp is taxed as a sole proprietorship or partnership, you make estimated payments on Form 1040 as a self-employed person. If it's taxed as a C-corporation, you make estimated payments on Form 1120-W instead. Check your business structure and tax classification with your accountant or the IRS to know which form applies.

What if I have a job and also do freelance work on the side?

Your employer withholds taxes from your W-2 wages, but not from your freelance income. You can adjust your W-4 to increase withholding from your job, or you can make estimated payments on the freelance income, or both. Many people increase their W-4 withholding because it's simpler than making four separate payments, but estimated payments are also valid.

Can I pay all four quarters at once instead of making four separate payments?

Yes. You can pay your entire estimated tax for the year in one lump sum on April 15, or split it however you want across the four due dates. The IRS doesn't require you to divide it evenly. However, if you pay late for any quarter, you'll owe penalties on that quarter's underpayment, so paying on time for each due date is safer than catching up later.

What if I overpay my estimated taxes?

Any overpayment is refunded to you when you file your tax return in April. You can also request a refund of overpayment from a prior year by filing Form 1040-X (amended return) or by explore the overpayment to your current year's estimated taxes. Most people let the overpayment sit and claim it as a refund on their return.

Do I need to file a separate form to make estimated payments, or do I just send the money?

You just send the money. There's no form to file with the payment itself. When you pay through Direct Pay or EFTPS, the system records which quarter and which tax year you're paying for. When you file your annual return in April, you'll report all four payments you made, and the IRS will match them to your account automatically.