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Plain-English guides to quarterly estimated tax for freelancers, contractors and the self-employed — tax year 2026, IRS-sourced figures, worked examples. Start with the quarterly estimated tax calculator if you just want your number.

30 October 2026

How much should I pay in quarterly taxes?

The exact formula, two worked single-filer examples ($60,000 and $100,000 of 1099 income), the safe-harbor shortcut, and the 2026 IRS due dates.

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