Quick Answer
401K or RET on your pay stub shows your pre-tax retirement plan contribution. If you contribute 6% of a $60,000 salary, this line shows $138.46 per biweekly paycheck ($3,600 annually). This money goes directly to your retirement account before taxes are calculated.
Best Answer
Sarah Chen, Payroll Tax Analyst
Best for anyone with employer-sponsored retirement benefits who wants to understand their pay stub
What 401K or RET means on your pay stub
The 401K, RET, or similar retirement line item on your pay stub represents your pre-tax contribution to your employer's retirement plan. This deduction happens before federal, state, and FICA taxes are calculated, which means you save money on taxes while building retirement savings.
Most employers use abbreviations like:
Example: How retirement contributions appear
Let's say you earn $60,000 annually and contribute 6% to your 401(k). Here's how it shows on your biweekly pay stub:
Without the 401(k) contribution, your federal tax would be about $226 - so you're saving roughly $31 per paycheck in federal taxes alone.
Contribution limits and employer matching
For 2026, you can contribute up to $23,500 to your 401(k) if you're under 50, or $31,000 if you're 50 or older. Many employers offer matching contributions that don't count toward your limit.
How this affects your taxes
Every dollar you contribute to a traditional 401(k) reduces your taxable income dollar-for-dollar. In the 22% federal tax bracket, a $1,000 contribution saves you:
So that $1,000 contribution only costs you about $730 in actual take-home pay.
What you should do
Check your pay stub to verify your contribution amount matches what you intended. If you're not contributing enough to get your full employer match, you're leaving free money on the table. Use our paycheck calculator to see how different contribution levels affect your take-home pay.
[Calculate Your Paycheck →](paystub-explainer)
Key takeaway: 401K or RET on your pay stub shows pre-tax retirement contributions that reduce your taxable income. A 6% contribution on $60,000 salary costs only ~$106 in take-home pay per paycheck due to tax savings, while building $3,600 in annual retirement savings.
*Sources: [IRS Publication 560](https://www.irs.gov/pub/irs-pdf/p560.pdf), [IRC Section 401(k)]*
Key Takeaway: 401K or RET shows pre-tax retirement contributions that reduce your taxable income and cost less than the full amount due to tax savings.
2026 retirement contribution limits by age group
| Age Group | Employee Limit | Catch-up Amount | Total Possible |
|---|---|---|---|
| Under 50 | $23,500 | $0 | $23,500 |
| 50-59 | $23,500 | $7,500 | $31,000 |
| 60-63 | $23,500 | $11,250 | $34,750 |
| 64+ | $23,500 | $7,500 | $31,000 |
More Perspectives
Sarah Chen, Payroll Tax Analyst
Perfect for new employees who are seeing retirement deductions for the first time
Your first encounter with retirement deductions
If this is your first job with benefits, seeing 401K or RET on your pay stub might be confusing. Don't worry - this is a good thing! It means you're already building retirement savings, even if you didn't realize it.
What's happening to your money
When you see a retirement deduction, that money isn't disappearing. It's going into an investment account in your name. You can typically log into your employer's retirement website to see your balance growing.
For a new graduate earning $45,000 starting salary:
Why you should care (even at 22)
Starting early makes a huge difference due to compound growth. If you contribute just $2,000 per year starting at age 22, you could have over $560,000 at retirement. Wait until age 32, and you'd need to contribute about $3,200 per year to reach the same amount.
Getting started checklist
1. Find out your company's match policy - This is free money
2. Start with at least 3% if money is tight
3. Increase by 1% each year until you hit 10-15%
4. Set up online access to track your account
Key takeaway: That retirement deduction is building your future wealth automatically. Even small amounts make a big difference when you start young, and you get tax savings today to make it more affordable.
Key Takeaway: Retirement deductions are building your future wealth automatically, and starting young with even small amounts creates significant long-term value.
Sarah Chen, Payroll Tax Analyst
For employees who see both traditional and Roth options on their pay stub
Traditional vs. Roth retirement deductions
Some employers offer both traditional (pre-tax) and Roth (after-tax) retirement options. You might see separate lines like:
How they appear differently on your pay stub
Let's compare a $2,000 biweekly salary with $200 retirement contributions:
Traditional 401(k):
Roth 401(k):
Which one should you choose?
Traditional makes sense if you expect to be in a lower tax bracket in retirement. Roth makes sense if you expect higher taxes later or want tax-free withdrawals. Many financial advisors suggest splitting contributions between both.
Reading your pay stub correctly
Make sure you understand which type of contribution you're making. If you see both 401K and ROTH lines, you're doing a split strategy. The total of both lines counts toward your annual contribution limit of $23,500 (2026).
Key takeaway: Traditional retirement deductions reduce current taxes, while Roth deductions don't affect current taxes but provide tax-free growth. Both appear on your pay stub but affect your taxable income differently.
Key Takeaway: Traditional retirement deductions reduce current taxes while Roth deductions provide tax-free growth, and both count toward your annual contribution limits.
Sources
- IRS Publication 560 — Retirement Plans for Small Business
- IRC Section 401(k) — Qualified cash or deferred arrangement
Related Questions
Reviewed by Sarah Chen, Payroll Tax Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.