Revenue Quebec is bringing in a windfall of money thanks to their tax evasion crackdown in the restaurant industry.

All restaurants must now have an electronic eaves-dropping system installed in their cash registers that tallies up how much each establishment is really making in sales.

Revenue Quebec says it raked-in 160 million in new taxes over a one-year period thanks to the new system. "This is the first year of implementing SRM (sales recording module) so the results are interesting," says Andrée-Anne Steward, a spokesperson for Revenue Quebec.

The system first became mandatory in November 2011.

More inspections

But, the taxman beleives it can still double that money, to $300 million next year. Stewart says inspectors are still sniffing out those who aren't using the devices or giving proper receipts.

"The results will go up again," says Stewart.

Revenue Quebec has also conducted 16 thousand inspections last year, levying more than $1 million in fines.

That includes about 1 thousand visits to Montreal restaurants, who paid $300 thousand in fines.

Revenue Quebec is also declaring its hotline for reporting non-compliant companies a success. It's received more than 2,500 complaints.