On the last banking day of each week, Danmarks Nationalbank conducts open market operations, in which the counterparties may raise monetary-policy loans against collateral and make deposits by purchasing certificates of deposit issued by Danmarks Nationalbank. Normally, loans and deposits have a maturity of seven days. The loans and deposits accrue interest at the lending rate and the certificates of deposit rate, respectively.

With effect from 1 February 2017 Danmarks Nationalbank introduced buy-back and sale of certificates of deposit on a daily basis in order to support a smooth exchange of liquidity.