Solo 401k Calculator

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Solo 401(k) contribution limits depend on your income, age, and business structure, and getting the math wrong means leaving money on the table or over-contributing. Give Neotask your numbers and it runs the calculation through the Solo 401k Calculator, breaking out employee versus employer contributions and any room left for a Mega Backdoor Roth.

• Calculates the actual maximum Solo 401(k) contribution for your specific numbers
• Splits out employee and employer contribution limits separately
• Covers sole proprietorships, LLCs, and S-corps, since the math differs by structure

What you can automate

Solo 401k Calculator

Calculate the maximum Solo 401(k) contribution based on income, age, and business type. Users can see employee and employer contribution limits plus available room for a Mega Backdoor Roth, covering sole proprietorships, LLCs, and S-corps.

Real workflows

Check Mega Backdoor Roth room before year-end

Give Neotask your income, age, and business type, and ask how much Mega Backdoor Roth room is left; it runs the numbers through the Solo 401k Calculator and returns the breakdown.

Frequently asked questions

Does the calculation change based on my business structure?

Yes, sole proprietorships, LLCs, and S-corps have different contribution mechanics, and the calculator accounts for that.

Does it separate what I contribute as employee versus employer?

Yes, the result breaks out employee and employer contribution limits separately.