IHT305 and 306 relate to the calculation of the tax rate for
principal and proportionate charges respectively in settlement
cases. You can find guidance about what figures to include in
IHTM42000.
The calculation at the bottom of the IHT306 enables you to
refine the rate charge by inserting the appropriate number of
quarters (
IHTM42116) the distributed asset has
been relevant property since the ten year charge/commencement in
the appropriate box.
The rate calculations lead you to select either IHT309 (IOP)
or IHT310 (NIOP) to continue to raise the assessment.
