Maximize Your Contributions with Our Easy-to-Use Solo 401(k) Calculator
Planning your retirement savings is crucial, and our Solo 401(k) Plan Contribution Calculator helps you estimate the maximum amount you can contribute to your Solo 401(k) plan based on your income, age, and business type.
Simply fill out the fields below, and our tool will provide an approximation tailored to your unique situation. Once complete, you can generate a convenient PDF summary to save or print for your records.
Please note: The calculated amount is an estimate for informational purposes only. For specific advice or details about our Solo 401(k) services, visit our Solo 401(k) plan page.
Legend for the Calculator Fields
- Name
- What to Enter: Your full legal name.
- Tips: Use the name associated with your Solo 401(k) account or the name used on your tax filings for accuracy.
- Plan Year
- What to Enter: The calendar year for which you are calculating contributions (e.g., 2024).
- Tips: Make sure to select the correct year, as contribution limits and rules can vary annually.
- Business Type
- What to Enter: The structure of your business (e.g., sole proprietorship/LLC, partnership, or corporation).
- Tips: If you’re unsure of your business type, consult your business registration documents or a tax professional.
- Why It Matters: Contribution limits and tax benefits can differ depending on your business type.
- Income
- What to Enter: Your net earnings from self-employment or W-2 wages.
- Tips: Use your most accurate and recent earnings figures. For sole proprietors, calculate net income after deducting business expenses.
- Age
- What to Enter: Your current age in whole years.
- Tips: This field is important because individuals aged 50 or older may qualify for additional “catch-up contributions.”
Solo 401(k) Contribution Calculator FAQ
This tool allows Solo 401(k) plan investors to calculate their maximum contribution based on income, business type, age, etc.
It’s quick and easy to plan your retirement strategy and see how much you can contribute and take advantage of tax benefits afforded by saving inside a 401(k) plan.
No, this is an estimate only. For personalized advice, consult a financial advisor or tax professional.
Different business structures have different rules for calculating contributions. For example, sole proprietors use net earnings, S Corp owners use W-2 wages.
Age matters because individuals age 50 and older can make “catch-up” contributions, which increases their total contribution limit.
Note: Because of the SECURE Act 2.0, savers between the ages of 60 and 63 have an increased catch-up limit of $11,250 for 2025.
Yes! Once you’ve filled out the form, a PDF of your results will be generated. You can save or print this document.
If you enter incorrect info, the results may not be accurate. Check everything before you generate your results. Of course, this tool can be used to calculate different scenarios.
Our Solo 401(k) Plan page has more info on plan benefits, setup and management.
When using this tool, you may choose the current taxable year or the previous year. Contributions are due by the tax filing day plus extensions.
Yes, we respect user privacy. The information you enter is not saved or shared and is used only to generate the PDF.
