If you earn money that doesn't come with an employer withholding taxes, the IRS expects a payment four times a year.
The next one lands on June 16, and plenty of freelancers, gig drivers, and small business owners miss it every single time.
When you work a regular job, taxes come out of each paycheck automatically.
When you drive for a rideshare app, sell on Etsy, or do contract work, nobody withholds a dime.
That means the full tax bill shows up later, often with a penalty attached.
The rule is simpler than most people think.
You owe estimated taxes if you expect to owe at least $1,000 for the year.
You can also avoid trouble by paying at least 90% of this year's tax or 100% of last year's, whichever is smaller.
Hit either target and the underpayment penalty usually goes away.
The penalty itself isn't dramatic, but it's real.
It's essentially interest on the money you should have paid earlier, and it grows the longer you wait.
The IRS calculates it based on how late and how much you owe, so skipping June means a bigger number in April.
A common shortcut is to take your total expected tax bill, divide it by four, and pay that each quarter.
If your income is uneven, you can use the annualized method, which lets you pay more in the quarters when you actually made more money.
You can use IRS Direct Pay straight from a bank account, or set up an account at EFTPS.gov.
Credit card payments work too, but the processor tacks on a fee, usually around 2%.
One move that saves a headache: set aside a percentage of every payment you receive.
Many self-employed workers park 25% to 30% in a separate savings account the moment a client pays.
When the deadline arrives, the money is already there.
If you missed earlier deadlines this year, you're not stuck.
You can catch up now by making a larger payment, and the IRS offers a way to estimate what you owe using Form 1040-ES.
Sending something is almost always better than sending nothing.
Then September 15 and January 15 after that.
Four dates, four payments, and no surprise bill in the spring.
The bottom line: estimated taxes feel like a hassle until you compare them to a penalty plus a lump-sum bill you didn't plan for.
Treating each payment like a regular bill, not a crisis, keeps your budget steady all year.
Final Thoughts
Set the money aside as it comes in, and tax season stops being a shock.