A billing authority may—
reduce any amount a person is liable to pay to it under section 43 or 45 above, or
remit payment of the whole of any amount a person would otherwise be liable to pay to it under section 43 or 45 above.
But an authority may not act under this section unless it is satisfied that—
the ratepayer would sustain hardship if the authority did not do so, and
it is reasonable for the authority to do so, having regard to the interests of persons liable to pay council tax set by it.
The amount as regards which a reduction or remittance may be made under subsection (1) above is the amount the person would be liable to pay (apart from this section) taking account of anything done under section 47 above , the effect of any regulations under section 57A or 58 below, and the effect of any provision of or made under Schedule 7A below.
Where an authority acts under this section, section 43 or 45 above shall be construed accordingly as regards the case concerned.