Bonus Tax Impact

The Bonus Tax Impact Calculator shows how a bonus is taxed and the common discrepancy between the tax withheld at the time of payment (often at a flat supplemental rate) and the actual tax owed when the bonus is included in your annual income. Enter your regular annual salary, bonus amount, and filing status. The calculator shows the withholding amount (using supplemental income rates), the actual tax on the bonus at your marginal rate, and any refund or additional tax owed at filing time. Bonuses often feel more heavily taxed than regular income because employers may withhold at a flat 22% (US) or aggregate the bonus with regular pay, temporarily pushing you into a higher withholding bracket. This calculator clarifies that bonuses are ultimately taxed at your marginal rate — any over-withholding is refunded when you file.