It is probably inevitable;e that at some point in 2025 the cost of an NBus Day ticket and pass prices will go up. For regular users, the single fare is irrelevant as you're more likely to use a Day Ticket, Travelcard or Concessionary Pass, In any event if you are making a return journey if you buy a single ticket there and back you'd pay £5.80 from the 6th January, a quid more than a NBus Day Ticket which allows you to use any bus in the West Midlands County that day and is better value.
As Simon says though, the fares are not sustainable and if the Mayor warns to keep the lid on any increases the money has got to be found from somewhere. Money from the Council Tax to subsidise bus fares is a hard sell. There is also unlikely to be fumding from Whitehall for that. What funding there is will be for electric and hydrogen buses and will be time limited like the New Bus Grant of the 1970's was {which was used for the conversion to One Person operation).
As Simon says though, the fares are not sustainable and if the Mayor warns to keep the lid on any increases the money has got to be found from somewhere. Money from the Council Tax to subsidise bus fares is a hard sell. There is also unlikely to be fumding from Whitehall for that. What funding there is will be for electric and hydrogen buses and will be time limited like the New Bus Grant of the 1970's was {which was used for the conversion to One Person operation).