The temporary reduction in rates, that impacted main rates revenues, also had the impact of skewing more of the residential tax due towards the additional revenue.
Cafodd y gostyngiad dros dro mewn cyfraddau, a gafodd ddylanwad ar refeniw prif gyfraddau, hefyd yr effaith o ysgiwio mwy o'r dreth breswyl oedd yn ddyledus tuag at y refeniw ychwanegol.