The transaction effecting the acquisition of a dwelling acquired between the sale of the old main residence and the acquisition of the new main residence is called an ‘intermediate transaction’.
Bydd y trafodiad sy'n rhoi effaith i gaffael annedd a gaffaelir rhwng gwerthu'r hen brif breswylfa a chaffael y brif breswylfa newydd yn cael ei alw'n 'rhyng-drafodiad'.