In determining the value of a person's estate immediately before death, a liability may be taken into account to the extent that—
Where the whole or any part of a liability is not discharged in accordance with paragraph (a) of subsection (1), the liability or (as the case may be) the part may only be taken into account for the purpose mentioned in that subsection to the extent that—
For the purposes of subsection (2)(a) there is a real commercial reason for a liability, or part of a liability, not being discharged where it is shown that—
Where, by virtue of this section, a liability is not taken into account in determining the value of a person's estate immediately before death, the liability is also not to be taken into account in determining the extent to which the estate of any spouse or civil partner of the person is increased for the purposes of section 18.
In subsection (2)(b) "tax advantage" means—
In subsection (5) "tax" includes income tax and capital gains tax.
Where the liability is discharged as mentioned in subsection (1)(a) only in part—