hi guys, i´m hearing some contrasting stories about road tax, does anyone know what i´d pay on a 2004 st220 if i was to tax it as of now?

i´m hearing stuff about it being low tax band or the law not chaging yet..........ect but from what i can see, i´m looking at over 400 quid which is a complete piss take! its the same as my fully comp insurance!!!