Free tools

Four free tools that run in your browser. Nothing you type is sent to us or saved on our server.

  • Maintenance estimator

    Estimate a CMS calculation and see every step of the working, including other children, shared care and collection fees.

  • Deadline calculator

    Choose the letter you have received and the date on it. The calculator shows your deadlines and lets you add them to your calendar.

  • Care nights counter

    Set your usual pattern, mark holidays and changes, and see the total nights in any 12-month period and which shared care band applies.

  • Letter builder

    Choose a letter, fill in the boxes and get a clear letter you can copy, print or download for Word.

Private by design

These tools run entirely in your web browser. They do not send what you type to CMS Hub or anyone else. The letter builder can remember a draft on your own device, but only if you tick the box to allow it.

This is information, not legal advice. It explains how the system generally works in England, Wales and Scotland. Your situation may be different. Check the official guidance on GOV.UK and get free advice from the organisations on our Get help page before making important decisions.