The warranty serves as a guarantee to the buyer until the seller can reimburse the buyer and the buyer earns interest in exchange. There are three main types of pensions. By buying these securities, the Central Bank helps to increase the money supply in the economy, which promotes spending and reduces the cost of borrowing. If the Central Bank wants the economy to grow, it first sells the government bonds and then buys them back on an agreed date. In this case, the agreement is called the Reverse Term Repurchase Agreement. A repurchase agreement is a sale of securities for cash, with an obligation to redeem the securities at a predetermined price at a future time – this is the opinion of the borrowing party. A lender, for example.B. a bank, will enter into a pension agreement to buy fixed income securities from a borrowing counterparty, for example. B to a trader, promising to resell the securities within a short period of time.