Calculators and checklists

Every tool here runs in your browser. Nothing you type is sent anywhere, stored, or logged — reload the page and it is gone.

They are estimators, not quotes. Each one shows the arithmetic it used so you can check it against your own paperwork rather than trusting a number.

• Late Payment Interest Calculator

  What a late invoice has actually accrued in interest and fees, and what it adds per day from here.

• Is Small Claims Court Worth It? Calculator

  Weigh a claim's expected recovery against filing fees, your own hours, and the odds of actually collecting.