1. entities or natural persons must keep their books and papers for a period of ten (10) years from the date of the last entry, document or voucher
2. it is best to keep these documents properly in a folder or filing cabinet, so that they can be found at any time and quickly. This maxim can be applied to all types of bills, from household bills (gas, electricity, telephony ...) to purchases made (computers, furniture or electrical appliances), to any home repair (plumbing services, cabinetry or electricity). The banking operations carried out are also included, from a transfer to the contracting of a deposit, without forgetting the operations of the Stock Market.