401(K) GROWTH CALCULATOR

See How Your 401(k) Could Grow Over Time

Estimate how your current balance, ongoing contributions, employer match and investment returns could build your retirement savings over the years.

Calculate Growth → Understand Compound Growth

ILLUSTRATIVE GROWTH

Time can make a difference

Year 1 Year 10 Year 20 Year 30

Illustrative future balance $—

INTERACTIVE TOOL

Calculate Your Potential 401(k) Growth

Enter your current balance, contributions, employer match, investment return and years to estimate how your account could grow.

Enter Your Information

Current 401(k) Balance

Your approximate current account balance.

Annual Contribution

Your employee contribution per year.

Annual Employer Match

Estimated employer contribution per year.

Years to Grow

Number of years for the projection.

Estimated Annual Return

Used for an illustrative projection only.

Annual Contribution Growth

Optional annual increase in contributions.

ESTIMATED FUTURE 401(K) BALANCE

Starting balance $50,000

Total contributions $0

Employer contributions $0

Investment growth $0

Projection period 30 years

Annual return 7%

Starting contribution $8,000

This projection assumes annual contributions and a constant annual return. Actual market performance and contribution timing can produce very different results.

GROWTH TIMELINE

Watch the Projection Build Year by Year

The chart updates whenever you change the calculator inputs.

Projected 401(k) Balance

Based on your inputs

Start Year 15 Year 30

COMPOUND GROWTH

Why 401(k) Growth Can Accelerate Over Time

A retirement account can potentially grow from both new contributions and returns on money that has already accumulated.

Your Starting Balance

Money already in your account has more time to potentially earn investment returns.

Ongoing Contributions

Regular contributions add new money to the account throughout your working years.

Investment Returns

Investment gains or losses change the value of your account over time.

WHAT AFFECTS GROWTH?

Five Variables Can Change Your Projection

⏱

Time

A longer investment period gives contributions and potential returns more time to compound.

Contributions

Increasing the amount you contribute can increase the amount of money entering your account.

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Investment Return

Higher or lower investment returns can materially change a long-term projection.

＋

Employer Match

Eligible employer contributions can add money to your retirement account.

Fees

Investment and plan-related fees can reduce the amount of money remaining in an account over time.

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Asset Allocation

The investments available through your plan can affect both potential returns and investment risk.

ILLUSTRATIVE EXAMPLE

How Contributions and Returns Work Together

Consider a hypothetical account beginning with $50,000, receiving $8,000 in annual employee contributions and $2,400 in annual employer contributions, with a 7% annual return.

Component	Example Amount	What It Represents
Starting balance	$50,000	Money already saved
Employee contribution	$8,000 / year	Your annual contribution
Employer contribution	$2,400 / year	Illustrative employer match
Investment return	7% / year	Hypothetical constant annual return
Projection period	30 years	Illustrative investment period

401(K) CALCULATOR CLUSTER

Explore More 401(k) Calculators

Continue with tools for contributions, matching, retirement planning and Roth 401(k) scenarios.

All 401(k) Calculators → Browse the complete calculator hub. 401(k) Calculator → Estimate retirement savings using multiple inputs. 401(k) Match Calculator → Estimate your employer matching contribution. Contribution Calculator → Explore different contribution amounts. Retirement Calculator → Connect savings with a retirement projection. Roth 401(k) Calculator → Explore Roth 401(k) contribution scenarios.

LEARN MORE

Build the Bigger 401(k) Picture

Growth is only one part of retirement planning. Learn how contributions, investments, employer matching and fees connect.

401(k) Contributions Learn how employee contributions work. 401(k) Employer Match Understand employer matching contributions. 401(k) Investment Options Explore common investments inside a 401(k). 401(k) Fees Understand investment and plan-related costs. 401(k) Investing Learn about investing within your retirement plan. Retirement Planning Connect your 401(k) with your broader retirement plan.

FAQ

401(k) Growth Calculator FAQs

It combines a starting account balance with recurring contributions, employer contributions and an assumed investment return to produce an illustrative future balance.

There is no guaranteed annual return. You can test multiple assumptions in the calculator rather than relying on a single projection. Historical investment performance does not guarantee future results.

Yes. Enter your estimated annual employer contribution in the employer match field. For a more detailed calculation, use our 401(k) Match Calculator.

No. The return you enter is treated as the annual return assumption for the projection. Actual investment expenses and plan fees can affect your results.

Yes. Real-world investment returns can be positive or negative from year to year. This calculator uses a constant annual return assumption, so it does not model market volatility or sequences of gains and losses.

No. The result is an educational illustration based on the assumptions you enter. Actual account values can differ substantially.

Turn Your Growth Estimate Into a Bigger Retirement Plan

Explore contribution, employer-match and retirement calculators to understand different parts of your 401(k) strategy.

Explore All Calculators → Retirement Calculator

Educational disclaimer: This calculator provides hypothetical estimates for educational purposes only. It does not predict actual investment performance or guarantee a future account balance. Investment returns can fluctuate, contributions may change, fees and taxes can affect results, and actual plan rules vary. This tool is not financial, tax or investment advice.