A local precepting authority which has made calculations in accordance with section 49A above in relation to a financial year (originally or by way of substitute) may make calculations in substitution in relation to the year in accordance with that section.
None of the substitute calculations are to have any effect if the amount calculated under section 49A(4) above would exceed that so calculated in the previous calculations.
Subsection (2) above does not apply if the previous calculation under subsection (4) of section 49A above has been quashed because of a failure to comply with that section in making the calculation.