Solo 401(k) Calculator

Project a Solo 401(k) — the retirement plan for the self-employed with no employees — in today's dollars.

Your details

Current ageRetirement ageCurrent balance$Monthly contribution$Solo 401(k)s allow high combined employee + employer contributions.Annual return%Inflation rate%

Balance at retirement

$1,386,870.09

In today's dollars: $748,064.67
Total contributions: $480,000.00
Investment growth: $906,870.09

Contributions vs growth

Contributions: $480,000.0035%
Growth: $906,870.0965%

Balance at retirement$1,386,870.09

Formula

Future value = current balance compounded monthly plus the future value of monthly contributions, deflated by inflation.

Sources & methodology

Constant return with monthly compounding plus inflation adjustment; excludes contribution limits and taxes.

•U.S. SEC — retirement — SEC

Last updated: 2026-07-20

Related calculators

More Retirement →

SEP-IRA Calculator Self-Employment Tax Calculator (US 2025)

Embed this calculator⌄

Paste this into your page — it works with no key and computes in the visitor's browser.

<iframe src="https://numveo.com/embed/solo-401k-calculator" width="100%" height="640" style="border:0" loading="lazy" title="Solo 401(k) Calculator"></iframe>