No
interest
is added to council tax arrears and court proceedings are only to establish your liability to pay council tax if you should fail to pay any.
The bill will be bigger because the amount owed will grow with time.
I also don't see things getting 'nasty'. Once the council realise that there is someone out there who hasn't paid any tax, they will send a bill and expect you to contact them and work something out.
If you can put some money aside for the inevitable rainy day, you would help yourself.
As much as I hate council tax and the councils 'couldn't care less if you can afford it or not' attitude, and would dearly love to say 'don't volunteer', if and when it does arrive, you might make you life difficult financially in other areas.
I will have to sit on the fence and not actually say one way or the other what to do about it.