The tax due on that transaction is now £21,730.77, however, as £15,416.67 has already been paid only £6,314.10 needs to be paid.
Y dreth sy'n ddyledus ar y trafodiad hwnnw bellach yw £21,730.77, fodd bynnag, gan fod £15,416.67 eisoes wedi’i dalu dim ond £6,314.10 sydd angen ei dalu.