Estimated Tax

Estimated Tax is the method used to pay income tax and self-employment tax on income that isn’t subject to withholding throughout the year. Rather than paying all taxes owed when filing an annual return, taxpayers with significant income beyond wages make quarterly payments to the IRS to avoid underpayment penalties and large year-end tax bills. This pay-as-you-go system ensures the government receives tax revenue throughout the year from all income sources.

You generally must pay estimated taxes if you expect to owe at least $1,000 in tax after subtracting withholding and refundable credits, and your withholding and refundable credits will be less than 90% of the current year’s tax or 100% of the previous year’s tax (110% if your prior-year adjusted gross income exceeded $150,000). Common situations requiring estimated tax payments include self-employment income, independent contractor earnings, investment income (interest, dividends, capital gains), rental property income, alimony received (for pre-2019 divorces), prizes and awards, and unemployment compensation.

Estimated tax payments are typically due in four installments: April 15, June 15, September 15, and January 15 of the following year. These dates adjust when they fall on weekends or holidays. Each payment should represent approximately 25% of your expected annual tax liability, though you can adjust payments based on actual income received if earnings vary throughout the year.

To calculate estimated taxes, project your expected adjusted gross income, taxable income, taxes, deductions, and credits for the year using Form 1040-ES worksheets or tax software. Include both income tax and self-employment tax in your calculations. Safe harbor rules protect against underpayment penalties if you pay at least 90% of the current year’s tax or 100% of the prior year’s tax (110% for high earners).

Payment methods include IRS Direct Pay, Electronic Federal Tax Payment System (EFTPS), credit or debit card payments, or mailing checks with payment vouchers. Many taxpayers find adjusting withholding from wages easier than making quarterly estimated payments, potentially eliminating the need for estimates altogether by increasing Form W-4 withholding amounts.