If possible, you should obtain a mandate from the taxpayer under enquiry before contacting the third party.
There are two forms of mandate
If you cannot get a mandate from the taxpayer you should first
approach the third party on an informal basis (
IHTM09342). If you need to consider
issuing an information notice (
IHTM32231) under IHTA84/S219 to a bank
or building society you should consult Litigation before taking any
You should make the taxpayer aware that the bank may charge them for the information provided.