The hospitality industry wants venues to be able to transfer gaming machines between bars and earn a percentage-based commission from their profits.
Hospitality New Zealand says new establishments are finding it hard to get a gaming license when many regions have caps on the number of machines.
Vice president Reg Hennessy says the process for reimbursing operators for the costs of running the machines is complicated and difficult to estimate.
He said a straight commission payment would simplify the system.
But the Problem Gambling Foundation said that could act as an incentive for venues to encourage gamblers to lose even more money. The foundation is trying to reduce the number of gaming machines.