Resources

Free tools for founders.

Six calculators and checklists for the business operations side of your startup: cash, hiring, taxes and the monthly close. Free to use, with results on screen and no sign-up.

Pick a tool and get an answer in minutes.

Runway calculator

Months of runway, the month cash runs out, and a chart of cash over time, with planned hires built in.

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True cost of a hire

Salary plus payroll taxes, benefits, software, equipment and recruiting fees. Uses 2026 figures.

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Contractor or employee?

A quick check against the IRS tests and the stricter ABC test used in MA, CA and NJ. Low, medium or high risk.

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LLC vs. S-corp savings

Self-employment tax compared with payroll tax on a reasonable salary, after the S-corp’s extra yearly costs.

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Month-end close checklist

A close checklist for QuickBooks Online, Xero or NetSuite, built around what your company actually has.

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Bank statement converter

Turn PDF bank statements into QuickBooks, Xero or NetSuite import files. Runs in your browser; nothing is uploaded.

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Free to use

Every tool is free. Your results show on screen right away, with no sign-up.

Email for the extras

Enter your email to download a report or spreadsheet. We’ll send the occasional founder note; unsubscribe anytime.

Your numbers stay with you

The tools run in your browser. What you type isn’t sent to Mangosteen, and bank statements are never uploaded.

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