Roth Catch-Up Rule 2026: Over $150K? Pay $1,920 More Tax Now

Описание: Roth catch-up rule 2026: earned over $150,000 last year? Your $8,000 catch-up must go in as Roth, about $1,920 more federal tax now.
Who the new rule hits, the W-2 box 3 test that decides it, and the $11,250 catch-up at ages 60–63.

The 2026 Roth catch-up rule: if your prior-year wages from your employer topped $150,000, your 401(k) catch-up must be Roth. Who it hits, the W-2 box that decides it, and the ugly math.

For 2026 the 401(k) catch-up for ages 50+ is $8,000 ($11,250 if you turn 60–63). Starting in 2026, if your prior-year wages from the plan sponsor exceeded $150,000 (the Social Security wages in box 3 of your W-2, which pre-tax 401(k) contributions don't reduce), catch-ups must go in as Roth. Plans without a Roth option aren't required to add one and may block catch-ups for people over the line. Teaching example (52, single, $160,000 salary): the $8,000 catch-up now adds about $1,920 of federal tax this year (24% bracket). Per Video 5's math, that's a prepayment, not a loss, if your tax rate later is the same.

Do this week (50+): check box 3 on last year's W-2 from this employer; find out whether your plan offers Roth and how it's handling your catch-up (automatic Roth or stopped); write down your catch-up number ($8,000, or $11,250 at 60–63), then check your next pay stub.

Chapters
0:00 Same catch-up, $1,920 more tax
0:44 2026 catch-up limits: $8,000 and $11,250
1:20 The new Roth catch-up rule (and the W-2 box that decides it)
2:18 "It's a penalty for earning more"
2:35 Roth catch-up tax math at $160K
3:37 Why the $1,920 isn't gone
4:05 Roth upsides, new jobs, and automatic Roth
4:44 Do this week: check box 3
5:20 Next: Social Security at 62

Watch the series (playlist):    • 401(k) & Retirement Math, Start Here  
1. How a 401(k) Match Actually Works:    • How a 401K Match Actually Works  
2. The Fund Fee That Quietly Costs You Six Figures:    • The Fund Fee That Quietly Costs You Six Fi...  
3. Bonds Now Pay 5%. So Why Did Bond Investors Just Get Poorer?:    • Bonds Now Pay 5%. So Why Did Bond Investor...  
4. Target-Date Funds: Set It and Forget It, or Set It and Overpay?:    • Target Date Fund Fees: $80 vs $680 a Year ...  
5. Roth vs Traditional 401(k): The Tax Bet on Every Paycheck:    • Roth vs Traditional 401(k): The Tax Bet on...  
6. 401(k) Vesting: The Match on Your Statement That Isn't Yours Yet:    • 401(k) Vesting: The Match on Your Statemen...  
7. 401(k) Rollover vs Cash Out: Why the Check Shows Up 20% Short:    • 401(k) Rollover vs Cash Out: Why the Check...  
8. 401(k) Loan When You Leave a Job: $3,200 Tax Bill, No Check:    • 401(k) Loan When You Leave a Job: $3,200 T...  
9. 401(k) Hardship Withdrawal: Why $10,000 of Help Costs $14,700:    • 401(k) Hardship Withdrawal: Why $10,000 of...  
10. HSA: Swipe It or Invest It? Only One Grows to $415K:    • HSA: Swipe It or Invest It? Only One Grows...  
11. Maxing Out Your 401(k) Early Can Cost You $1,800 of Match:    • Maxing Out Your 401(k) Early Can Cost You ...  

Sources
IRS: Retirement topics – Catch-up contributions
IRS: Notice 2025-67 (2026 limits; $150,000 threshold)
IRS: IR-2025-91 (final Roth catch-up regulations)
Treasury/IRS: Final regulations, Catch-Up Contributions, 90 FR 44527
26 U.S.C. §414(v)(7)
IRS: Topic 424
IRS: Retirement topics – Required minimum distributions
IRS: IR-2025-103 (2026 brackets)
SSA: Starting your retirement benefits early (V13 tease)

Educational only. Not tax, legal, or investment advice. Dollar examples use teaching rulers (a 52-year-old single person on a $160,000 salary, the 24% bracket, and Video 5's tax-rate comparison), not forecasts. State taxes, exceptions, and plan rules differ. Your plan documents win when they disagree with a video.

Ugly Math Money: the ugly math banks skip.

#401k #rothcatchup #retirement