Price risk is on the top of the risks which forward transaction parties want to hedge it. Price fluctuation on the market, is an important risk which sellers and buyers want to protect from it. Price fluctuation is a risk and also source of income for the speculators.

Parties can demand guarantee from each other. But guarantee subject is based on the trust and demand of the parties. If parties trust each other there may not be guarantee. In the event of the collateral, guarantee come into play in determination of price. If the seller gives guarantee to the buyer, there may no need initial deposit. If deposit exists, determining the price is made different way. If the seller gives the deposit to the buyer, the seller stays denided of the interest rate income. If the seller get deposit from the buyer, this amount will be substructed over forward price.