Average 401(k) Balance by Age: Are You on Track?
The average 401(k) balance is heavily skewed. Here are the median numbers and what to do if you are behind.
Median 401(k) balance by age (Fidelity 2025 data): Under 25: $7,100. Ages 25-34: $33,000. Ages 35-44: $78,000. Ages 45-54: $142,000. Ages 55-64: $207,000. Ages 65+: $232,000. These are medians — the average balances are 2-3x higher because large accounts skew the mean. The recommended targets are higher: 1x salary by 30, 3x by 40, 6x by 50, 8x by 60.
If You Are Behind
Behind at 30: You have 35 years of compound growth remaining. Contributing $500/month at 10% return from age 30 grows to $1,140,000 by 65. Behind at 40: Increase to $1,000/month for $760,000 by 65. Behind at 50: Max out contributions ($30,500 including catch-up in 2026) and delay Social Security to 70. The later you start, the more you need to save monthly, but catching up is always possible with aggressive saving.
The Power of the Employer Match
If your employer matches 50% up to 6%, that is an instant 50% return on your first 6% of salary. On a $70,000 salary, 6% = $4,200 contribution, employer adds $2,100. That is $2,100 per year of free money. Not contributing enough to get the full match is leaving guaranteed returns on the table — no investment in history consistently matches a 50% instant return.