Updated April 24, 2026

Managing payroll requires strict attention to which deductions are legally permitted. Even seemingly small mistakes can result in significant legal exposure, including wage claims, penalties, audits, and litigation. Employers must ensure that all payroll deductions comply with federal law and with the specific requirements of each state in which they operate.

The Fair Labor Standards Act (FLSA) establishes baseline rules for wage deductions, but state laws may impose stricter standards, and employee consent does not automatically make a deduction lawful. This overview is not exhaustive, but it outlines the fundamental categories of mandatory, voluntary, and unlawful payroll deductions. Each situation must be evaluated individually, with careful consideration of applicable federal, state, and local regulations.

What are Payroll Deductions?

Before we unpack the differences in payroll deductions, let’s explore what they actually are from an SMB perspective.

Payroll deductions are amounts taken out of an employee’s paycheck before they receive their take‑home pay.

For small businesses, these typically include required deductions like federal and state taxes, as well as optional deductions the employee agrees to, such as health insurance or retirement contributions. While some deductions are mandatory, others are only allowed under specific conditions—and some are not allowed at all.

Federal law, including the Fair Labor Standards Act (FLSA), sets minimum rules to protect employee pay, and many states add stricter requirements. That’s why it’s important for small business owners to understand what can be legally withheld and to apply deductions carefully, since mistakes can lead to penalties, back pay, or employee disputes.

What are Mandatory Deductions?

By law, mandatory deductions are required to be withheld from an employee’s gross earnings:

• FICA Tax – FICA deductions fund both Social Security and Medicare. Although each tax is calculated at different rates, the aggregate monies are collected together via the FICA deduction.
• Federal Income Tax.
• State Income Tax – If applicable.
• Local Tax – If applicable, as directed by county, city or other regional mandates.
• Wage Garnishments – Imposed by federal or state law.

What are Voluntary Deductions?

Voluntary deductions are payroll deductions that may legally be taken but are not required to be deducted from the employee’s gross pay. Voluntary deductions may be initiated by the written request of the employee. With that said, an employee’s written permission doesn’t always legally grant the deduction of monies from a paycheck, such as deducting the balance of monies owed to the employer when receiving a final check due to termination.
Lawful deductions that an employer may withhold include:

• Voluntary contributions to health plans, pension plans, IRA accounts and union dues.
• For exempt employees, sick or personal days, FMLA leave and disciplinary actions.

It is important to note that permissions regarding what is or is not allowed can depend on whether the employee is exempt or non-exempt. An employer may dock the wages of a non-exempt employee in order to reimburse for damaged property or similar expenses for which the employee is directly responsible, but these payroll deductions may not take the employee’s total wages below minimum wage. This is true even if the employer suffers losses due to the employee’s theft of company money or property.

Further, if such deductions are incurred during a week which includes overtime earnings, specific rules apply that require the overtime wage to remain at the original (i.e., not docked) rate.

Exempt vs. Non‑Exempt Employees: Key Deduction Rules

Exempt Employees (Salary Basis Rules)

Employees classified as exempt under the FLSA must generally receive their full predetermined salary for any workweek in which they perform work, regardless of the quantity or quality of that work. Improper payroll deductions may jeopardize the employee’s exempt classification.

Limited deductions from an exempt employee’s salary are permitted only in narrow circumstances defined by federal regulation, including:

• Full‑day absences for personal reasons
• Certain full‑day absences due to illness when a bona fide leave plan exists
• Unpaid disciplinary suspensions for serious misconduct
• Unpaid leave taken under the Family and Medical Leave Act (FMLA)

Partial‑day salary deductions are generally prohibited (outside of FMLA).

Non‑Exempt Employees

Employers may, in some circumstances, deduct wages from non‑exempt employees to recover costs such as damaged property or shortages—but only if the payroll deduction does not reduce the employee’s wages below the applicable minimum wage or cut into required overtime compensation.

This rule applies even when losses are caused by employee error or theft. In addition, several states prohibit such deductions entirely, regardless of wage level.

If a deduction is taken during a workweek that includes overtime, the employer must ensure that the employee still receives overtime pay at the required premium rate.

What are Unlawful Deductions?

Certain payroll deductions are prohibited under federal law and many state statutes, even if an employee consents.

Gratuities

Employers may not keep, share in, or deduct employee tips or gratuities, except as permitted under lawful tip‑pooling arrangements.

Docking Pay for Poor Performance

An employer may not reduce an exempt employee’s salary due to poor performance, reduced productivity, or lack of work, provided the employee performs any work during the week.

Uniforms

Under the FLSA, uniforms are considered a business expense when required by the employer. An employer may not deduct uniform costs if doing so reduces an employee’s wages below minimum wage or required overtime compensation.

Additionally, some states—such as California—require employers to pay all costs associated with required uniforms, including purchase and maintenance, without exception.

Employer‑Benefit Items and Business Expenses

Payroll deductions for items that primarily benefit the employer are generally unlawful. These include, but are not limited to:

• Business cards and company photographs
• Employer‑required medical examinations
• Tools, equipment, or supplies required for the job
• Work‑related travel or business expenses

Not only are federal court decisions interpreted in various ways by the state courts, but many states also have specific statutes detailing what may and may not be deducted from paychecks (even with the employee’s written “consent”). Wandering into murky territory regarding payroll deductions can spell trouble for a company and those involved in authorizing the questionable deductions. Always make sure you are familiar with the specific requirements of your state before you just assume a deduction is lawful.

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This content is not intended to substitute for legal advice. Always consult a legal professional for formal advice.