How to Calculate Quarterly Tax

What is Quarterly Tax?

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).

Step-by-Step Guide

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

Worked Examples

Input

$100,000 estimated income

Result

Pay ~$10,000-15,000 quarterly

Avoid penalties with safe harbor

Common Mistakes to Avoid

✕Not verifying results
✕Ignoring jurisdiction

Frequently Asked Questions

What does this calculator do?

Identify calculation need

How do I use this calculator?

Input required values

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