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A quarterly estimated tax calculator determines the required estimated tax payments to avoid IRS underpayment penalties. Self-employed individuals and those with significant investment income must pay quarterly taxes on April 15, June 15, September 15, and January 15. The safe harbor amount is 100% of last year's tax (110% if AGI > $150,000).

Stapsgewijze handleiding

1. 1Estimate annual income
2. 2Divide by 4
3. 3Submit estimated tax payment

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