Labor is preparing to ban businesses from adding hidden fees to online purchases, making it hard for consumers to cancel subscriptions and raising prices at the checkout, as the government tries to win back voters angry about the cost of living.

Prime Minister Anthony Albanese and Treasurer Jim Chalmers will announce on Wednesday the government will consult on banning a wide range of “dodgy” trading practices that can arise when people purchase items such as concert tickets, hotel rooms and gym memberships.