Independent guide

401(k) on a pay stub: 401(k) retirement contribution

A 401(k) line normally records a contribution to an employer-sponsored retirement plan. Traditional employee deferrals and designated Roth contributions…

Last updated September 13, 2026

Browse retirement contributions and plan codes.

A 401(k) line normally records a contribution to an employer-sponsored retirement plan. Traditional employee deferrals and designated Roth contributions have different federal income-tax treatment. Employer matching contributions are separate from the employee deduction.

Related spellings covered here: 401K RETIREMENT, 401K RET.

How to read this entry

Use the meaning 401(k) retirement contribution alongside the column heading. An earnings amount, an employee deduction and an employer-cost memo can have different effects even when their labels look similar.

Example on a pay statement

With $2,000 of eligible compensation and a 5% election, the contribution is $100. A $50 employer match belongs in the employer-contribution calculation and is not another $50 deducted from your pay.

Examples illustrate the checking method. They are not a personal tax calculation or a promise of a particular benefit.

What to check with payroll

Check your election, eligible compensation, traditional or Roth designation, and the contribution deposited with the plan provider.

Compare related entries

Read the retirement contributions and plan codes guide to compare the entries in this part of your statement. Use the full pay stub code directory when a second abbreviation is unfamiliar.

Reference and scope

Official guidance on retirement contributions and plan codes provides background on the underlying rules. The actual plan, tax year, jurisdiction and payroll record determine how the rules apply.