GrandChange coupons are a unique code, by entering which, when exchanging, in the appropriate field, the client is given a discount on the exchange. Coupons come in different denominations, but most often 0.05%. The amount of the coupon discount is summed up with the account discount if the user makes an exchange from a registered account (you can read about the cumulative discount system here). There are also coupons that exclude an account discount and summation, this should be clarified with the support service or carefully read the text that the service sends to email along with the coupon.

Only one coupon can be activated in one application. Any active coupon provided by our service can be applied once.