Interest is payable on the amount of any unpaid levy from the day after the date on which the levy must be paid in accordance with section 29(2).

If section 29A applies in relation to a return made under section 26 by a liable person, the total amount of the levy payable in respect of the relevant period to which the return relates is to be treated for the purposes of subsection (1) as if it had been payable in accordance with section 29(2)(b).

If an amount is paid to the relevant local authority in respect of the unpaid levy, the amount on which interest is payable is reduced by that amount.

Interest under this section is calculated at the rate specified in provision made under section 68.