Quarterly Estimated Taxes: What They Are, Who Owes Them, and How to Avoid Penalties
If you are self-employed or run a business, you likely owe quarterly estimated taxes. Missing payments comes with penalties. Here is how to stay ahead of it.
One of the most common surprises for people who go from a regular job to self-employment is this: the IRS does not wait until April to collect what you owe. They expect payments throughout the year.
Miss those payments, and you will owe penalties, even if you pay everything in full when you file your return.
Here is what you need to know.
How the U.S. Tax System Actually Works
When you work a regular job, your employer withholds income taxes and payroll taxes from every paycheck and sends them to the IRS on your behalf. You never see that money. It goes directly to the government as you earn it.
When you are self-employed, no one does that for you. You receive the full amount from clients, customers, or whoever is paying you. That means you are responsible for setting aside your own taxes and sending them to the IRS on a schedule.
That schedule is quarterly.
Who Needs to Pay Quarterly Estimated Taxes?
You generally need to make quarterly estimated tax payments if you expect to owe at least $1,000 in federal tax for the year after accounting for any withholding and credits.
This typically applies to:
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Freelancers and independent contractors
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Self-employed professionals
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Business owners
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Landlords with rental income
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People with significant investment income, dividends, or capital gains
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Anyone who receives income that is not subject to withholding
If you also have a W-2 job alongside your self-employment income, you may be able to adjust your withholding at your day job to cover the tax on your self-employment income instead of making separate quarterly payments. That is worth looking at on a case-by-case basis.
When Are the Payments Due?
The 2025 quarterly estimated tax deadlines are:
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April 15 (for income earned January through March)
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June 16 (for income earned April through May)
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September 15 (for income earned June through August)
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January 15, 2026 (for income earned September through December)
Notice that the quarters are not even. That third period covers only two months, while others cover three. It is one of those things that trips people up.
How Much Should You Pay?
There are two safe harbor rules that help you avoid the underpayment penalty:
Option 1: Pay at least 90% of the current year’s tax liability throughout the year.
Option 2: Pay 100% of what you owed in taxes the prior year (110% if your prior year adjusted gross income was over $150,000).
If you meet either of those thresholds through your quarterly payments, you will not face an underpayment penalty, even if you still owe something when you file.
For most people starting out, using last year’s tax liability as a baseline is the simpler approach. Pay what you owed last year, divided into four payments, and you are covered.
What Happens If You Miss a Payment?
The IRS charges an underpayment penalty for each quarter you miss or underpay. The penalty is based on the current federal interest rate and compounds from the due date of each missed payment.
It is not always a dramatic amount, but it adds up, and it is entirely avoidable. What makes it frustrating is that the penalty applies quarter by quarter, not just at year end. So even if you pay your full tax bill in April, you can still owe a penalty for the quarters where you were behind.