Project your 401(k) balance at retirement. Adjust your monthly contribution, expected return, and time horizon to see the impact of small changes over decades.
$
$500$1,000,000
%
1%30%
Yr
1 Yr40 Yr
Invested Amount$540,000
Est. Returns$1,300,631
Total Value$1,840,631
The Power of Starting Early
Compound growth is the single most important variable in retirement savings — and it rewards time more than amount. Same monthly contribution ($500/month at 7% return):
Starting at 25, ending at 65 (40 years): $1,310,000
Starting at 35, ending at 65 (30 years): $611,000
Starting at 45, ending at 65 (20 years): $260,000
Starting at 55, ending at 65 (10 years): $86,000
Delaying 10 years cuts your retirement balance by more than half. The first $500/month you ever invest is the most valuable money you'll ever have — it has 40+ years to compound. There's no catch-up move that beats time in the market.
Don't Leave the Employer Match on the Table
If your employer matches 50% of contributions up to 6% of salary (a common formula), every dollar you contribute up to that 6% comes back with a 50-cent bonus immediately. That's a guaranteed 50% return — no investment in the world beats this.
On a $80,000 salary, 6% is $4,800/year of your money plus $2,400/year of free employer money = $7,200/year going into retirement. Over 30 years at 7%, that employer match alone grows to $241,000 in tax-deferred wealth — money you got for filling out a benefits form.
Combined employee + employer limit: $70,000 ($77,500 with catch-up)
Highly compensated employees: may face additional limits based on plan's non-discrimination testing
Frequently Asked Questions
How much should I contribute to my 401(k)?
At minimum, contribute enough to capture your full employer match — it's a guaranteed instant return. After that, aim for 15% of gross income total (including employer contributions). If you can't get to 15% today, escalate by 1% each year — most people get there within 5-7 years.
What's the 2026 contribution limit?
$23,500 employee contribution, plus a $7,500 catch-up if you're 50+. The combined employee + employer limit is $70,000 ($77,500 with catch-up).
Traditional vs Roth 401(k)?
Roth makes sense if you expect to be in a higher tax bracket in retirement (younger workers, growing earners). Traditional makes sense if you'll be in a lower bracket later. Many people split — diversifying tax exposure is reasonable hedging.
What return rate should I plan for?
7% per year is a reasonable real (inflation-adjusted) baseline based on long-term S&P 500 history. Some years will be -30%, others +30%. Over 20-30 year horizons, the average lands around 7-10% nominal. Plan around 7%, celebrate if you get more.
Can I take money out early?
Generally not without penalty — withdrawals before age 59½ trigger a 10% penalty plus income tax. Exceptions exist (hardship, first-time home purchase, certain medical), but the math almost never works out in your favor. Loans against your 401(k) are usually a better path if you need cash, but check fees first.