Los Angeles: 'Harry Potter' actor Rupert Grint has lost USD 1.3 million following a dispute over his taxes.

A tax tribunal judge rejected the 27-year-old actor's appeal against an HM Revenue and Customs (HMRC) block regarding a change in his accounting dates to shield his earnings¿a total of USD 31.2 million from the Harry Potter franchise¿from a high tax rate, reported E! online.

According to the judge Grint followed advice from tax advisers Clay & Associates to change his accounting date which prevented eight months of income from being taxed.

During the appeal Grint said his knowledge of his financial affairs was "quite limited" and his father, Nigel, and accountant, Dan Clay take care of his tax returns.