Connecticut Bonus Tax Calculator:

Yes. Connecticut considers bonuses to be taxable wages and requires state income tax withholding on bonus and other supplemental wage payments.

When a bonus is paid separately from regular wages, Connecticut withholding is generally calculated using the employee’s CT-W4 withholding code and the state’s annualized withholding method, rather than a simple flat percentage. You can use the calculator above, powered by Beyond, to estimate Connecticut withholding and take-home pay for bonus payments.

How to Calculate Bonus Tax in Connecticut

Supplemental wages—including bonuses, commissions, overtime pay, back pay, and certain additional wage payments—are generally treated as wages for withholding purposes.

If supplemental wages are processed:

– Paid separately from regular wages: Connecticut withholding is generally determined by comparing the tax on the employee’s regular wages alone with the tax on regular wages plus the bonus, using the state’s annualized withholding rules and CT-W4 code.
– If Connecticut income tax was not withheld from regular wages: the employer may calculate withholding based on the combined amount.

For federal withholding:

– 22% applies to most supplemental wages
– 37% applies to supplemental wages above $1 million in a calendar year

Key Information on Connecticut Bonuses

How Are Bonuses Paid in Connecticut?

Employers may issue bonuses through:

– Check
– Direct deposit
– Pay card

How Do Bonuses Work?

Bonuses are treated as taxable compensation. They are generally subject to:

– Federal income tax withholding
– Connecticut state income tax withholding
– Social Security tax
– Medicare tax

They are reported on the employee’s Form W-2 at the end of the year.

What Is the Connecticut Bonus Tax Rate?

Connecticut does not generally use a flat percentage withholding rate for wage bonuses. Instead, withholding is based on:

– The employee’s CT-W4 withholding code
– The employee’s wage level
– The employer’s pay frequency
– The state’s annualized withholding tables and calculation rules

The calculator on this page uses this Connecticut annualized withholding approach.

Are Bonuses Taxed Differently Than Standard Pay?

They can be. At the federal level, separately paid bonuses may use the supplemental wage method (22%). In Connecticut, withholding on a separately paid bonus is generally determined using the state’s withholding tables and annualized method rather than a flat bonus rate.

How Much Tax Is Taken Out of a Bonus?

For most bonus payments in Connecticut, estimated withholding may include:

– Connecticut state income tax withholding based on CT-W4 code and annualized wages
– 22% federal supplemental withholding
– FICA taxes (Social Security and Medicare)

Because Connecticut withholding depends on the employee’s withholding code, wage level, and payroll setup, the exact amount taken from a bonus can vary significantly from one employee to another.

Important:

This calculator is provided for informational and estimation purposes only. Actual payroll tax withholdings may vary based on an employee’s tax elections, payroll setup, and other factors. Employers should consult a qualified tax, legal, or payroll professional for official calculations. If you need assistance with payroll processing or tax compliance, the Beyond team is available to help.