Merko generally discloses information only about contracts already entered into in order to protect business secrets, which, among other things, include information on offers, the content of such offers, and the course of negotiations etc. However, this procedure does not preclude public disclosure of information, in particularly in the case of public procurements, if material information on tenders is disclosed by the contracting entity prior to entering into the contract.
Merko avaldab üldjuhul teavet ainult sõlmitud lepingute kohta seepärast, et kaitsta ärisaladust, milleks on muuhulgas informatsioon pakkumiste esitamise, nende sisu, läbirääkimiste pidamise jms kohta. Samas ei välista antud kord teabe avalikustamist, eriti just riigihangete puhul, kui pakkumuste olulised andmed avaldatakse tellija poolt enne lepingu sõlmimist.