401K Calculator

Estimate your 401(k) balance at retirement. Calculate employer matching contributions, salary growth, and tax-deferred investment growth.

Calculator Inputs

$
Gross annual income.
%
Expected yearly wage growth.
%
Percent of salary deferred into 401(k).
%
Commonly 50% (50 cents per dollar).
%
Up to what % of salary employer matches.
yrs
Time horizon.

Calculated Results

Projected 401(k) Balance
$1,894,320
Total Employee Saved $468,000
Free Employer Match $234,000
Investment Growth $1,192,320
Values calculate live as you adjust inputs.

About 401K Calculator

How Employer Matching Affects Your 401(k) Balance

Your 401(k) balance can grow from more than the money deducted from your paycheck. If your employer matches a portion of your contributions, that money adds to your retirement savings without requiring a larger contribution from your salary.

The amount you receive depends on your company’s matching formula. For example, an employer might contribute 50 cents for every dollar you save, up to a specified percentage of your salary. If you contribute less than the amount needed to receive the full match, you could miss out on part of that benefit. Check your plan’s rules, including any vesting schedule, to understand how much of the employer contribution you may keep if you leave the company.

How Salary Growth Affects Your 401(k) Savings

A raise can increase your retirement contributions even if you keep the same contribution percentage. Suppose you earn $60,000 a year and contribute 6% of your salary. Your annual contribution would be $3,600. If your salary rises and you continue contributing 6%, the amount going into your 401(k) rises too.

Over a long working period, these increases can add up. Employer matching contributions may also increase when they are calculated as a percentage of your salary. Use the annual salary raise field to estimate how future pay increases could affect your projected balance. Actual raises may be irregular, so treat this as a planning assumption rather than a promise of future earnings.

Understanding Your 401(k) Calculator Results

The projected balance gives you an estimate of how much your 401(k) could be worth by the time you retire. The other results help explain where that amount comes from:

  • Total Employee Saved: The contributions you make from your salary over the projection period.

  • Free Employer Match: The estimated amount your employer contributes under the matching assumptions entered.

  • Investment Growth: The estimated increase attributed to investment returns over time.

These figures show different parts of the same projection, not separate amounts to add together twice. Investment growth is an estimate, not a guaranteed return. Market performance, fees, changes to your contributions, and your employer’s plan rules can all affect the balance you eventually accumulate.

How Much Should You Contribute to Your 401(k)?

The right contribution rate depends on your income, regular expenses, other financial priorities, and retirement timeline. If your employer offers matching contributions, check how much you need to contribute to qualify for the full match. When your budget allows, receiving the full available match can help build savings faster than relying on your own contributions alone.

You can use this 401(k) calculator to compare different contribution percentages and salary-growth assumptions. Try a few realistic scenarios to see how changing your contribution rate affects the projected balance. Choose an amount you can sustain alongside your other financial commitments, then revisit it when your income or expenses change.

What is 401K Calculator?

A 401(k) calculator projects the growth of your pre-tax retirement savings plan, factoring in your deferral rate, employer match matching incentives, wage inflation, and compounding capital returns.

How to Use This Calculator

  1. Enter current annual salary.
  2. Specify the percentage you contribute each pay period.
  3. Enter your company’s employer matching formula (e.g. 50% match up to 6% of salary).
  4. Set years until retirement to view your balance breakdown.

The Mathematical Formula & Variables

Total Contribution = Employee Contribution + Employer Match; Compounded annually.

Variables Definition

Symbol / Variable Name Description
Match\% Employer Match Min(Your Contribution, Match Limit) * Match Rate.

Step-by-Step Worked Example

Scenario: $85,000 salary, contributing 8% ($6,800/yr) with 50% match up to 6% ($2,550/yr) over 30 years at 7.5% return.

  1. Year 1 employee contribution = $6,800.
  2. Year 1 employer match = 50% of 6% = 3% of $85,000 = $2,550.
  3. Total Year 1 savings = $9,350.
  4. Compounded over 30 years with 2.5% salary growth and 7.5% market returns yields $1,894,320.

Result: Total 401(k) value reaches $1,894,320, of which $234,000 is 100% free employer matching money.

Frequently Asked Questions

What is an employer 401(k) match?

An employer match is money your employer contributes to your retirement account based on your own contributions. It represents an immediate 50% to 100% risk-free return on your savings.

What is the IRS annual 401(k) contribution limit?

For 2024–2026, the IRS employee deferral limit is $24,500 (with an additional $7,500 catch-up contribution for individuals aged 50 and older).

How does salary growth affect my projected 401(k) balance?

When your contributions are calculated as a percentage of salary, future pay increases can raise the amount you contribute each year. Employer matching contributions may rise as well, depending on your plan's rules.

Does the projected 401(k) balance include investment returns?

The calculator's projected balance includes estimated investment growth, alongside employee contributions and employer matching contributions. The actual return may be higher or lower than the assumption used in the projection.

Is the projected 401(k) balance guaranteed?

No. It is an estimate based on the calculator's assumptions, not a promise of a future account value. Investment performance, fees, contribution changes, salary changes, and employer plan terms can all affect your actual balance.