The present invention provides a method and system to implement risk management of foreign exchange of currency related to an online transaction. According to the present invention an exchange price and a tolerance parameter can be determined for a foreign currency as the foreign currency relates to a base currency. A computer system can receive a spot price relating to a market price for exchange of a foreign currency and compare the spot price with the tolerance parameter. The system can modify the exchange price if spot price exceeds the tolerance parameter. In addition, the system can receive information including the base currency amount involved in an online transaction and transmit the base currency amount and the foreign currency amount, wherein the foreign currency amount is derived according to the exchange price. If desired, a first tolerance parameter and a second tolerance parameter can be utilized, wherein a rise in the spot price is compared to the first tolerance parameter and a fall in the spot price is compared to the second tolerance parameter. In addition, the magnitude of the first tolerance parameter does not need to be equal to the magnitude of the second tolerance parameter. A rise in the spot price can be compared to the tolerance parameter such that the exchange price is modified if the spot price is higher than the tolerance parameter. Similarly, only a fall of the spot price can be compared to the tolerance parameter such that the exchange price is modified if the spot price is lower than the tolerance parameter. Additionally, a spot price can be determined and compared to the tolerance level at predetermined periods of time. An original tolerance level can be modified to create a new tolerance level, if the spot price exceeds the original tolerance level.