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Updated on January 16, 2024
Pre-tax deductions are specific amounts withheld from an employee’s gross pay before payroll taxes are calculated. These deductions are typically allocated for various voluntary benefits that the employee opts into, such as group health insurance and flexible spending accounts. Calculating taxes before these withholdings effectively reduces the employee’s gross pay, subsequently increasing their take-home (or net) pay.
To fully understand pre-tax deductions, it helps to compare them with after-tax deductions, also known as “post-tax deductions.” After-tax deductions are subtracted from an employee’s pay following the computation of taxes.
Simply put, pre-tax deductions increase take-home pay, whereas after-tax deductions reduce it. Moreover, if a benefit is neither pre-tax nor tax-advantaged, then it qualifies as an after-tax benefit that is subject to taxation.
While the formula for pre-tax deductions is straightforward, the process can become complex due to the different types of pre-tax deductions and the specific taxes they are exempt from.
The term “pre-tax” is often linked with cafeteria plans, which are required to meet Section 125 of the Internal Revenue Code (IRC) to qualify as pre-tax.
Cafeteria plans commonly include:
Employers may also offer additional pre-tax benefits outside of cafeteria plans, as long as they comply with the respective IRC criteria. These can include:
Tax-favored retirement plans, such as a traditional 401(k), are tax-deferred rather than pre-tax. This means that tax payments on contributions and earnings are postponed until the participant withdraws the funds. This deferral allows the employee to benefit from the “pre-tax effect,” effectively boosting their take-home pay.
Employers should not exclude all pre-tax deductions from all payroll taxes automatically. Instead, it’s important to determine which taxes are exempt for the benefit in question. From there, an employer deducts the benefit from the employee’s gross pay to arrive at their taxable wages and then withholds payroll taxes.
Pre-tax deductions should not be included in an employee’s W-2 gross wages. However, employers may need to report certain details about pre-tax deductions in other areas of the W-2.
A best practice is to provide a breakdown of pre-tax deductions on each pay stub, helping employees understand the calculation of their net pay. The final pay stub of the year should reconcile with the information on the employee’s W-2.
“I earn around $1,800 biweekly and pay $120 in pre-tax deductions each pay period. This decreases my taxable wages to $1,680, which in turn increases my take-home pay.”
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