If you work for yourself, no one is withholding taxes from your income the way an employer would. The IRS still expects to be paid throughout the year, which is why freelancers, gig workers, and other self-employed people generally have to make quarterly estimated tax payments. Here’s how the system actually works and how to stay ahead of it.
Who Needs to Pay Quarterly Estimated Taxes
As a general rule, if you expect to owe $1,000 or more in federal tax for the year after subtracting withholding and credits, the IRS expects you to pay estimated taxes quarterly rather than in one lump sum the following April. This applies to most freelancers, independent contractors, and gig workers who receive 1099 income with no taxes withheld.
How the System Actually Works
Employees have income tax, Social Security, and Medicare withheld from every paycheck. When you’re self-employed, that withholding doesn’t happen automatically, so the IRS has you estimate your tax liability for the year and pay it in four installments using Form 1040-ES. Each payment covers income tax on your net profit plus self-employment tax, which is currently 15.3% (12.4% for Social Security up to the annual wage base, plus 2.9% for Medicare with no cap). Because you’re both the “employer” and the “employee” when self-employed, you owe both halves of that tax.
When Payments Are Due
The IRS splits the year into four payment periods, with due dates that generally fall around April 15, June 15, September 15, and January 15 of the following year. When one of those dates lands on a weekend or federal holiday, the deadline shifts to the next business day, so it’s worth double-checking the exact dates on IRS.gov each year rather than assuming they’re identical to the year before.
How to Calculate What You Owe
The most common approach is to estimate your total income, subtract business expenses to get net profit, and then apply both income tax and self-employment tax to that number. To simplify the self-employment tax calculation, the IRS has you multiply net profit by 92.35% before applying the 15.3% rate, which accounts for the fact that the employer-equivalent half of the tax is itself deductible.
If doing this from scratch feels overwhelming, there’s a simpler safe-harbor rule: if you pay at least 100% of what you owed in taxes last year (110% if your adjusted gross income was above $150,000), spread evenly across the four due dates, you generally won’t be hit with an underpayment penalty even if you end up owing more when you file. Many freelancers use last year’s tax bill divided by four as a starting estimate, then adjust as the year goes on.
How to Actually Pay
The IRS accepts estimated payments through its online IRS Direct Pay system, the Electronic Federal Tax Payment System (EFTPS), by debit or credit card through an approved processor, or by mailing a check with a completed Form 1040-ES voucher. Direct Pay is generally the simplest option for most freelancers since it requires no separate enrollment.
What Happens If You Miss a Payment
Missing or underpaying a quarterly installment doesn’t mean you’re in legal trouble, but it usually means an underpayment penalty calculated as a kind of interest charge on the amount you should have paid, from the due date until you actually pay it. The penalty is generally modest compared to the tax itself, but it adds up the longer the balance goes unpaid, so it’s almost always better to send in a late payment as soon as you can rather than waiting until the following April.
A Simple System to Stay on Top of It
A method that works well for a lot of freelancers: open a separate savings account for taxes, and every time you get paid, move a fixed percentage of that payment (many freelancers use somewhere between 25% and 30%, depending on their state and tax bracket) into that account immediately. By the time a due date arrives, the money is already set aside, and paying is just a matter of transferring what you’ve saved rather than scrambling to find it.
This article is for general educational purposes and isn’t personalized tax advice. Tax rules and specific dollar thresholds change from year to year, so confirm the current figures on IRS.gov or with a tax professional before making decisions based on your own situation.