Individual 401(k) Savings Calculator
Use this calculator to see the benefits of an Individual 401(k) for the self-employed.
How the individual 401(k) savings calculator works
It compounds your current solo 401(k) balance plus annual contributions — which combine your employee deferral and employer profit-sharing — at your expected return to your retirement date.
Worked example: with current balance of $30,000, annual contribution (employee + employer) of $25,000 and years to retirement of 25, the individual 401(k) savings calculator shows solo 401(k) in 25 years of $1,854,735.
- Total contributions
- $655,000
- Investment growth
- $1,199,735
- Projected balance
- $1,854,735
- Annual contribution
- $25,000
The formula
Each year: balance = (balance + annual contribution) × (1 + return), summed to retirement.
Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender, plan administrator or advisor.
Questions about the individual 401(k) savings calculator
What is a solo or individual 401(k)?
A 401(k) for self-employed people with no employees (other than a spouse). You contribute as both employee and employer, allowing larger contributions than most other plans.
How much can I contribute to a solo 401(k)?
The employee elective deferral plus an employer contribution of up to 25% of compensation, subject to an overall annual limit — often well above what an IRA or SEP allows.
Can my spouse participate?
Yes — a spouse earning income from the business can also contribute, effectively doubling the household’s solo 401(k) savings capacity.
Is the Individual 401(k) Savings Calculator free to use?
Yes. Every calculator on FinCalculators is completely free, with no sign-up, login or paywall. You can run as many scenarios as you like.