Solo 401k Contribution Calculator

Estimate how much you can contribute to your Solo 401k plan based on your business structure, age, and income. This calculator helps you plan your retirement savings strategy.

Solo 401k Contribution Calculator
Estimate your maximum 2024 Solo 401k contribution based on your business details

Ages 50+ qualify for catch-up contributions

$

Your total business income after expenses but before taxes

Solo 401k Contribution Guide

Understanding how to maximize your retirement savings as a self-employed individual

Overview
How Solo 401k contributions work

As a self-employed individual, you can contribute to a Solo 401k in two ways: as an employee and as an employer. The formula for calculating contributions varies based on your business structure.

Employee Contributions
2024 Limits

You can contribute up to $23,000 as an employee (or 100% of your compensation, whichever is less).

If you're 50 or older, you can make an additional catch-up contribution of $7,500, bringing your total employee contribution limit to $30,500.

Employer Contributions
Based on business structure

Sole Proprietors/Single-Member LLCs:

You can contribute up to 20% of your net self-employment income, which is your business profit minus half of your self-employment tax.

Corporations (S-Corp, C-Corp):

You can contribute up to 25% of your W-2 compensation.

Total Contribution Limits
2024 Maximum allowed contributions

Standard Limit

$69,000

Combined employee & employer

Age 50+ Limit

$76,500

Including catch-up contributions

Important Deadlines

Employee contributions deadline:

December 31, 2024

Employer contributions deadline:

Tax filing deadline (including extensions)