A Ltd must also make a further return for the first transaction, and pay the tax, less any tax already paid, by 31 August 2020.
Rhaid i A Cyf ddychwelyd ffurflen dreth ychwanegol ar gyfer y trafodiad cyntaf a thalu’r dreth, wedi tynnu unrhyw dreth a dalwyd yn barod, erbyn 31 Awst 2020.