Tools

Practical tools for startup tax decisions.

We build calculators and references for the questions founders actually ask us — free, no email, no signup. Just the answer.

Featured tool

Delaware franchise tax calculator

Estimate Delaware franchise tax using both calculation methods — and understand why the amount on your Delaware notice may be much higher than what you ultimately owe.

Calculate your tax Reference

Startup tax calendar

Every federal and startup deadline that matters, in one place — with a downloadable calendar file for Apple, Google, and Outlook.

Open the calendar

More founder tax tools are coming. Have a calculation you wish existed? Tell us — we build these from real client questions.