What's Due This Month
Your federal tax and business deadlines month by month, with the four 1040-ES estimated-tax dates built in.
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What the law actually says
- •If you expect to owe $1,000 or more in tax for the year after withholding, the IRS requires you to pay estimated tax in four installments using Form 1040-ES, or face an underpayment penalty under Internal Revenue Code §6654.
- •The estimated-tax due dates for the 2026 tax year are April 15, 2026, June 15, 2026, September 15, 2026, and January 15, 2027.
- •Form 1099-NEC for any contractor you paid $600 or more, and Form W-2 for any employee, must be filed and furnished by January 31.