Taxlume

Taxlume helps US self-employed freelancers answer two questions every quarter: "Which retirement plan fits me?" and "How much should I set aside for taxes?"

RETIREMENT PLAN COMPARISON Enter your net self-employment income and age, and Taxlume instantly compares your maximum contribution limits across: • Solo 401(k) — employee deferral + employer profit-sharing • SEP IRA — simple, high-limit employer contribution • SIMPLE IRA — lower limits, easier setup

Includes 2026 catch-up contribution amounts for ages 50-59 and 60-63.

QUARTERLY TAX ESTIMATE Get a rough estimate of what to set aside for self-employment tax and federal income tax before each quarterly deadline, with reminders you can turn on so you never miss a due date.

OTHER FEATURES • Save and revisit past calculations, compare two income scenarios side by side • Share your results as a clean summary card • Built-in guide explaining how each plan type works • No account, no sign-up, no data leaves your device

Taxlume is a free, ad-supported educational calculator — not personalized tax or investment advice. Always confirm your numbers with a licensed CPA or financial advisor before making contributions or filing estimated taxes.