Amber Mountain Investments 3 (Pty) Ltd (the respondent) was the owner of Erf 8757, Walmer, Port Elizabeth. It sold the property to Joburg Skyscraper (Pty) Ltd and required a rates clearance certificate from the Nelson Mandela Bay Municipality (the appellant) before transfer. The municipality's financial year runs from 1 July to 30 June. The municipality required payment of rates until the end of its financial year (30 June 2010) as a condition for issuing the certificate. The respondent paid R2,281,014.68 under protest to obtain the certificate. At the time of payment, the respondent's actual indebtedness was only R1,214,482.68. The property was transferred on 25 February 2010. The respondent claimed an overpayment of R1,066,532 for the period from the date of transfer until the end of the municipality's financial year.