The first Australian version of the musical Hamilton has sold more than 1.3 million tickets, producer Michael Cassel says, one of the biggest local box offices ever for a single musical production.

Ahead of its closure at Sydney Lyric theatre on January 25 – the run-up to which could see sales exceed 1.4 million – Cassel has also released an estimate of the economic impact of Hamilton, which took in a COVID-shortened Sydney run from March 2021, then Melbourne and Brisbane seasons before a Sydney return last July.