This section applies if—
To the extent that the liability is attributable as mentioned in subsection (1)(b), it may only be taken into account in determining the value of the person's estate immediately before death so far as permitted by subsection (3).
If the amount of the liability that is attributable as mentioned in subsection (1)(b) exceeds the value of the relevant balance, the excess may be taken into account, but only so far as the excess does not arise for either of the reasons mentioned in subsection (4).
The reasons are—
In subsection (4)(a)—
"arrangements" includes any scheme, transaction or series of transactions, agreement or understanding, whether or not legally enforceable, and any associated operations;
"tax advantage" means—
(a)the avoidance or reduction of a charge to tax, or
(b)the avoidance of a possible determination in respect of tax.