the taxpayer must complete the reimbursement (including any interest paid in relation the amount being reimbursed) to the relevant person(s) within 90 days of the WRA making the repayment
rhaid i'r trethdalwr gwblhau’r ad-daliad (gan gynnwys unrhyw log a dalwyd mewn perthynas ag ad-dalu’r swm hwnnw) i’r unigolyn/unigolion perthnasol cyn pen 90 diwrnod i ad-daliad ACC