Bonuses are considered supplemental income and are subject to a flat 22% federal income tax withholding rate, in addition to Social Security and Medicare taxes.
If the total bonus amount exceeds $1 million in a calendar year, the first $1 million is taxed at the 22% flat rate, and any amount over $1 million is taxed at the top marginal rate of 37%.
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Employers have the option to tax bonuses at the employee's regular marginal tax rate instead of the 22% flat rate, which can be beneficial if the employee's regular rate is lower.
Bonuses are reported in Box 1 of the W-2 form, which includes all taxable wages, tips, and other compensation.
Employees generally do not need to take any special action to report their bonuses on their tax returns, as the bonus amount is already included in the W-2.
The 22% flat rate withholding on bonuses is a simplified method used by many employers, as it's easier to administer than calculating the bonus at the employee's regular marginal rate.
Bonuses can affect an employee's eligibility for certain tax credits and deductions, as the additional income may push them over income thresholds.
If an employee receives a non-cash bonus, such as a gift card or vacation, the fair market value of the bonus must still be reported on the W-2.
Bonuses are subject to the same employment taxes (Social Security and Medicare) as regular wages, with the employer and employee each paying a portion of these taxes.
Employees may be able to reduce the tax burden on their bonuses by having their employer withhold at their regular marginal rate rather than the 22% flat rate, but this requires additional paperwork.
Bonuses can be structured in various ways, such as performance-based, retention, or sign-on bonuses, and the tax treatment may vary slightly depending on the type of bonus.
Employers must report bonus payments accurately on the W-2, as the IRS closely monitors bonus income and can impose penalties for incorrect reporting.