You must send a LTT return to the WRA and pay the tax within 30 days of the day after completion (or other ‘effective date’ of the transaction).
Rhaid i chi anfon ffurflen TTT at ACC a thalu'r dreth o fewn 30 diwrnod i'r diwrnod ar ôl cwblhau (neu 'ddyddiad dod i rym' arall y trafodiad).