Classic tool
401(k) Calculator
Estimate future 401(k) balance, annual contributions and employer match.
Use this 401(k) calculator to estimate how much an employer-sponsored retirement plan could grow over time. It helps you see how your current balance, employee contribution rate, employer match, expected return and salary growth may influence your long-term retirement savings.
Enter your current age, planned retirement age, existing 401(k) balance, annual salary, contribution percentage, basic employer match rule, expected annual return and salary growth. The result shows a straightforward projection of the balance at retirement, along with the first-year contribution amounts and estimated total contributions from both you and your employer.
This kind of projection is useful for scenario planning, contribution decisions and early retirement conversations. Like any estimate, it does not replace personal financial advice and does not include official contribution limits, plan fees, taxes, career gaps or future employer policy changes.
Use clear inputs to get a more useful result.
How to read the projection
The estimate combines your current balance with new yearly contributions and compound growth. Even modest changes in contribution rate or time horizon can have a noticeable effect on the ending balance.
What this 401(k) calculator leaves out
Use the result as a planning reference, then refine it if your plan or career path includes more variables.
- Official contribution limits and catch-up rules
- Plan fees, taxes and investment allocation changes
- Career breaks, employer changes and vesting details
How to use 401(k) Calculator
Open the tool, fill in the fields with the data you already have and generate the result step by step. If you want to compare scenarios, change one field at a time so it is easier to understand the impact of each value.
When 401(k) Calculator is useful
The goal here is simple: Estimate future 401(k) balance, annual contributions and employer match. It works well for quick checks, planning, study and review before you move to a final decision or document.
What to review before using the result
Check units, labels, numbers, timing and any context that can change the meaning of the output. If the result will be used in a quote, technical task, published page or report, finish with a manual review.
Frequently asked questions
What should I prepare before using the tool?
Keep the key values, labels and units ready before filling in the fields. Cleaner inputs make the final result easier to review and compare.
Can I test different scenarios on the same page?
Yes. The safest approach is to change one field at a time, compare the outputs and note which value actually changes the final answer.
Is the result ready to use without checking it?
It is better to treat it as support. Review the output once more before using it in a quote, document, spreadsheet, technical task or published page.