The ability to view the balance and transaction history of accounts from several banks in one system, introduced by ING and Millennium, has so far launched several thousand people\n\nAccording to unofficial information 5,000 to 6,000 Polish customers use the service of aggregating bank accounts, which is possible due to the entry into force of the so-called open banking. However, two institutions that already have such an offer, ING and Millennium, avoid providing precise statistics on this topic. The press office of the latter only stated that among its clients several thousand people had so far used the option of accessing data on accounts in other banks via the Millenet website.\r\n\r\nSee also: Ramp Link with KNF permission to access bank data\r\n\r\nLet's remind that account aggregation is a service introduced on the basis of the PSD II Directive and the provisions on the so-called open banking. Thanks to them, the bank with the consent of its client can enable him to use his own transaction system to manage accounts in other institutions. Data transfer takes place via the API interface - in Poland a standard prepared under the auspices of the Polish Bank Association (ZBP) and named Polish API.\r\n\r\nSo far, aggregation of accounts has been made available to a wider group of clients by only two banks, i.e. the above-mentioned ING and Millennium. Currently, clients of both these financial institutions can only check the balance and history of operations on an account in another bank. It is only in the future that other services are to be made available, i.e., for example, the option to order transfers and other transactions.\r\n\r\nSee also: Millennium is the second bank in Poland to introduce account aggregation\r\n\r\nIt is probably the modest functionality of aggregators introduced by ING and Millennium that determines that interest in this solution is currently low. Perhaps that is why other banks are not eager to launch their own aggregators for the time being. From a regulatory point of view, most of the large commercial banks operating in Poland already have such a possibility. So far, native customers have little benefit from introducing open banking.