Patreon's sale tax? (Patreon)

I don't know what it is or what it will effect...but the law will be applied on 1st June 2020

but patreon told me to inform you guys that some of you may be charged a bit more for the monthly pledge...which honestly I don't know how much...

Sorry for can't inform you more about it...I don't know anything about tax...You may have to contact Patreon's team directly for more information.