Where the Welsh Ministers make a calculation under section 84M(2) or by virtue of section 84M(4) that shows an increase in the sum that falls to be paid to a receiving authority, they shall pay the authority a sum equal to the difference.
Payment under subsection (1) shall be at such time, or in instalments of such amounts and at such times, as the Welsh Ministers may determine, subject to subsection (3).
The time for payment under subsection (2) must be after the end of the financial year in which the report under section 84L was made.
Where the Welsh Ministers make a calculation under section 84M(2) or by virtue of section 84M(4) that shows a decrease in the sum that falls to be paid to a receiving authority, the authority shall pay a sum equal to the difference to the Welsh Ministers.
The time for payment under subsection (4) shall be such day after the end of the financial year in which the report under section 84L was made as the Welsh Ministers may specify.