If you're self-employed, a freelancer, or earn significant investment income, you may owe quarterly payments to the IRS. Miss them and face penalties — here's how to stay on track.
Who Must Pay Estimated Taxes?
W-2 employees have taxes withheld automatically from each paycheck, so they rarely owe estimated taxes. But if you're self-employed, a freelancer, an independent contractor, or a small business owner, no one is withholding on your behalf. You're generally required to make estimated tax payments if you expect to owe $1,000 or more in federal taxes when you file your return.
Sources: IRS: Estimated taxes
The Four Due Dates
The IRS divides the year into four payment periods, each with its own deadline. For 2025: April 15 (January 1 – March 31 income), June 16 (April 1 – May 31), September 15 (June 1 – August 31), and January 15, 2026 (September 1 – December 31). Missing a deadline triggers an underpayment penalty calculated on the amount owed for that period, even if you pay everything in full by April.
Sources: IRS: Estimated taxes · IRS: Form 1040-ES
How to Calculate Your Payment
The safest approach is to use one of the IRS safe harbor rules. Safe Harbor #1: Pay at least 90% of your current year's actual tax liability. Safe Harbor #2: Pay 100% of last year's total tax (or 110% if your prior-year AGI exceeded $150,000). Many self-employed individuals find it easiest to set aside 25–30% of every payment they receive, then make quarterly deposits from that reserve.
Sources: IRS: Estimated taxes · IRS: Form 1040-ES
How to Make Payments
The IRS offers several payment options. IRS Direct Pay (irs.gov/payments) allows free bank account debits for individuals. The Electronic Federal Tax Payment System (EFTPS) is preferred for businesses. You can also mail a check with Form 1040-ES. Most states with income taxes have their own estimated payment system with similar deadlines — check your state's revenue department website.
Sources: IRS: Estimated taxes
Avoiding Common Mistakes
The most common mistake is underestimating income — especially in a strong business year. Recalculate your estimated payment each quarter based on actual year-to-date earnings, not just an annual guess. Also remember that self-employment tax (15.3%) is in addition to income tax, so your effective rate as a self-employed person is typically higher than it would be as an employee at the same income level.
Let Us Handle the Math
Quarterly estimated tax planning is one of the most valuable services CPAcloud9 offers self-employed clients. We help you calculate accurate payments, set up a payment schedule, and avoid year-end surprises. Contact us to set up a consultation.
Primary sources and further reading
Tax rules depend on the tax year and individual circumstances. Confirm the current IRS guidance before filing.