The opening commission is the amount that is paid when formalizing the mortgage loan, in consideration of the administrative, IT and management expenses that its opening entails. It is paid only once and is usually a percentage of the capital borrowed.
Usually, the best strategy for the client is to agree or negotiate with the financial institution a minimum or zero amount. That is, the expenses of study, management, etc. the client is not imputed. Some financial institutions offer their mortgages without an opening commission.
This commission is included in the calculation of the APR (Annual Equivalent Rate) or effective cost of the loan