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These Common 401(k) Errors Could Cost You Millions

February 8, 2026 · Updated February 10, 2026 · Personal Finance
A happy couple in their 60s enjoying a sunny day in their beautiful garden.
A happy couple laughs while gardening, illustrating the vibrant retirement lifestyle you can protect by utilizing new catch-up windows.

4. Missing the New “Super Catch-Up” Window

For years, “catch-up contributions” were simple: if you were 50 or older, you could put in extra money. But thanks to the SECURE 2.0 Act, the rules have changed, creating a massive opportunity for those near retirement.

For 2025 and 2026, if you are aged 60, 61, 62, or 63, you are eligible for a higher “super catch-up” contribution.

401(k) Contribution Limits (2025–2026)
Category 2025 Limit 2026 Limit
Standard Limit (Under 50) $23,500 $24,500
Standard Catch-Up (Age 50+) +$7,500 +$8,000
Super Catch-Up (Ages 60–63) +$11,250 +$11,250
Total Possible (Ages 60–63) $34,750 $35,750

If you fall into this specific age bracket, failing to utilize this higher limit is a missed opportunity to shelter tens of thousands of dollars from taxes right before you retire.

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