How this calculator helps
A smaller monthly price is not automatically the best offer. Include any exit fees and one-off credits in your comparison and read the proposed contract carefully.
Before you decide
Always check speeds, service availability, new-customer restrictions, mid-contract rises and whether the existing agreement has a minimum term.
A practical example
A £35 plan compared with a £25 plan over 12 months is a £120 headline difference before fees or incentives.
Frequently asked question
Does this compare internet speeds or coverage?
No. It only compares the amounts you enter.
What next?
Change the figures and see the estimate update instantly. For another practical check, browse our free tools library or try the daily challenge.