According to this video, £2.60 are saved per person because of the royal family. This is not to discredit anybody’s argument, just thought it’d be interesting to share.
Some would rather everyone’s (sixty million people?) annual contribution go to more worthy causes than a multi-millionaire tax dodger (a voluntary contributory agreement on her behalf - yet the Sovereign Grant income is not taxed) relying on Govt funding whilst increasing her personal fortune throughout - and that’s before the multi-million handouts for maintenance of properties she lives in and is already responsible for, as well as subsidies for other properties and lands.
Though that’s just part of a modernisation process - not the abolition of the Monarchy itself.