Estimated Tax Payments

How It Works

The U.S. tax system operates on a pay-as-you-go basis, meaning you must pay taxes throughout the year rather than in one lump sum at filing time. For W-2 employees, employers handle this through paycheck withholding. But if you have significant income without withholding — self-employment income, freelance earnings, investment income, rental income, or retirement distributions — you must make quarterly estimated tax payments. The four quarterly due dates are April 15, June 15, September 15, and January 15 of the following year. You generally must make estimated payments if you expect to owe $1,000 or more in federal tax after subtracting withholding and credits. The IRS offers two safe harbors to avoid underpayment penalties: pay at least 90% of your current year's tax liability, or pay 100% of your prior year's tax liability (110% if your AGI exceeded $150,000). Most taxpayers use the prior-year safe harbor because it provides certainty — you know exactly how much to pay regardless of current-year income fluctuations. Estimated tax payments can be made online through IRS Direct Pay, EFTPS, or by mailing Form 1040-ES vouchers. Many states also require estimated payments with their own due dates. Underpayment penalties are calculated quarterly, so even if you make up a shortfall in Q4, you may owe penalties for the earlier quarters. First-year freelancers often underestimate their tax obligation because they're accustomed to employer withholding. A good rule of thumb is to set aside 25-30% of net self-employment income for federal and state taxes combined.