Systems, methods, and computer program products for establishing and using credit limits between counterparties and for managing risk in the trading of financial interests. A trading party may control the amount of future financial exposure that the trading party will incur with any counterparty in one or more future time periods in trades by the trading party during a trading session. Credit limits may be used to permit proposed trades to be completed or not depending upon available credit. Where there is insufficient credit, the trade may be blocked or otherwise prevented from progressing towards completion. If there is insufficient credit and if trading up to available credit is permitted, a partial trade for an amount up to the credit limit may be allowed. During a trading session, the credit remaining of a set credit limit between the trading party and the respective counterparty is changed according to trades executed between the trading party and the counterparty. After the end of the trading session, the remaining credit may be automatically reset to the set credit limit for each counterparty and future time period.