when the trade is closed the trader realizes a profit or loss based on the original transaction price and the price at which the trade was closed the rollover credits or debits could either add to this gain or detract from it 
since the forex market is closed on saturday and sunday the interest rate credit or debit from these days is applied on wednesday therefore holding a position at 5 p m on wednesday will result in being credited or debited triple the usual amount any forex transaction that settles for a date later than spot is considered a forward the price is calculated by adjusting the spot rate to account for the difference in interest rates between the two currencies the amount of adjustment is called forward points the forward points reflect only the interest rate differential between two markets they are not a forecast of how the spot market will trade at a date in the future a forward is a tailor made contract it can be for any amount of money and can settle on any date that s not a weekend or holiday as in a spot transaction funds are exchanged on the settlement date a forex or currency futures contract is an agreement between two parties to deliver a set amount of currency at a set date called the expiry in the future futures contracts are traded on an exchange for set values of currency and with set expiry dates unlike a forward the terms of a futures contract are non negotiable a profit is made on the difference between the prices the contract was bought and sold at most speculators don t hold futures contracts until expiration as that would require they deliver settle the currency the contract represents instead speculators buy and sell the contracts prior to expiration realizing their profits or losses on their transactions 