Kathleen Elizabeth Turner is suing her son Maxwell Finlay Turner for almost $85,000.
Court documents lodged in the District Court in Mackay allege Maxwell and his wife Debbie Maree Turner transferred money from Kathleen's account into their own between April 2018 and February 2020.
It's alleged the offending started when the couple moved in with Kathleen in 2015 after she had a fall.
Maxwell Turner denies any knowledge of the alleged misuse of his mother's money
Court documents say he doesn't know how to use internet banking or an ATM
He has denied claims his mother didn't know who cheques were being made out to