Solo 401k Calculator

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.

What you can automate

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.

Start free

Plans

Free

$0/mo

Download without a card and start for free.

Individual

$50/mo

The full personal agent platform for one person.

Enterprise

$200/mo

Multiple workspaces and capacity for larger teams.

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