Of course I know. But there is too high a rate. Frankly speaking, the maximum discount we can make is 6%.

我当然知道。但是税率太高了。坦白说，我们能给您的最大折扣是6%。

youdao

Suppose that you want to ensure that the maximum discount that your store can give is capped by an upper limit.

假定希望保证商店可以给出的最大折扣有一个最大限度。

youdao

The discount scheme, which was introduced in March, gives motorists a maximum 5p per litre reduction in duty.

BBC: Fuel discount could be raised to 7.5p says isles MP