The Prince of Wales continued to support the Duke and Duchess of Sussex with a “substantial sum” in the months after they stood down as senior royals.
Prince Harry told Oprah Winfrey his family “cut me off financially” in the first quarter of 2020.
A Clarence House spokesman said Prince Charles continued to fund the Sussexes until that summer.
The Sussexes deny there is a difference in timelines.
A spokesperson for them said Prince Harry was referring in his Oprah interview to the first quarter of the fiscal reporting period – the period from April to the start of July.