billycalc

401K

Calculate 401K instantly with the exact formula and a worked example.

401K

Annual salary$
Your contribution of salary%
Employer match (share of your contribution)%
Match up to share of salary%
Current balance$
Annual return%
Annual salary growth%
Years to retirementyears
Catch-up contribution (0 — under 50, 1 — 50+, 2 — ages 60–63)
401(k) balance at retirement
975,299$
2026 contribution limit: $24,500 (+$8,000 at 50+, +$11,250 at ages 60–63); the limit is not indexed in this calculationCalculate 401K instantly with the exact formula and a worked example.
First-year contributions (yours + employer)
10400$
Your total contributions
291674$
Total employer contributions
87502$
Investment growth
576123$

More about: 401K

What it calculates

The “401K” calculator computes 401(k) balance at retirement in $ from 9 parameters: annual salary ($), your contribution of salary (%), employer match (share of your contribution) (%), match up to share of salary (%), current balance ($), annual return (%), annual salary growth (%), years to retirement (years), catch-up contribution (0 — under 50, 1 — 50+, 2 — ages 60–63).

Helps estimate your tax burden, check deductions, and plan tax payments.

Example calculation

With parameters Annual salary = 80,000 $, Your contribution of salary = 10 %, Employer match (share of your contribution) = 50 %, Match up to share of salary = 6 %, Current balance = 20,000 $, Annual return = 7 %, Annual salary growth = 3 %, Years to retirement = 25 years, Catch-up contribution (0 — under 50, 1 — 50+, 2 — ages 60–63) = 0 the result is 975,299 $ (2026 contribution limit: $24,500 (+$8,000 at 50+, +$11,250 at ages 60–63); the limit is not indexed in this calculation).

How to use

  1. Enter annual salary, your contribution of salary, employer match (share of your contribution), match up to share of salary, current balance, annual return, annual salary growth, years to retirement and catch-up contribution (0 — under 50, 1 — 50+, 2 — ages 60–63) — each field above is adjustable with a slider.
  2. 401(k) balance at retirement ($) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How does sales tax work in the US?
Sales tax is added to the price of goods at checkout and varies by state and locality. For example: California 7.25%, New York ~8%, Texas 8.25%, Florida 6%. Some states have no statewide sales tax.
How do I add sales tax to a price?
Multiply the pre-tax price by the tax rate to get the tax amount, then add it to the price. Example: $1,000 × 7.25% = $72.50 tax, for a $1,072.50 total.
How do I extract tax from a tax-inclusive total?
Divide the total by (1 + rate). Example: a $1,072.50 total at 7.25% gives a $1,000 pre-tax price, so the tax was $72.50. Use the “tax included” toggle to do this automatically.
What is VAT and how is it different?
VAT (Value Added Tax) is used across the EU and many other countries, typically 17–27%, and is usually shown included in the displayed price. US sales tax is normally added at checkout instead.

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