The Western Canadian Wheat Growers is calling for an immediate reduction in Grain Commission user fees paid by farmers.

The association is also calling for a farmer refund of tens of millions of dollars in overcharges.

Wheat Growers president Levi Wood says the federal Grain Commission, which charges for grain inspection and weighing, has piled up a 100 million dollar surplus.

He says grain volumes have been higher in the past few years than first estimated, so the volume of fees has been much higher.