The adjective voucher comes from verb check : ratify or corroborate something. This verb, to verify, must be taken into account that its etymological origin is in Latin. It is exactly in the verb "prove", which can be translated as "verify" and which is made up of the following components:
-The prefix "con-", which is equivalent to "together".
-The verb "provere", which can be translated as "check" or "test."

Voucher is called what checks .
For example: “When you make the deposit at the bank, don't forget to save the receipt”, "To make the reservation, you must pay 10% of the rate in advance and then send us the receipt by email", "At this moment I don't have any proof to prove that I am the owner of the motorcycle, but I can go to my house to look for the corresponding documentation".
The idea of voucher is usually used to name the document what it serves to confirm a management, a process or a status . Suppose a person buys a car and goes to an office to register the operation and thus process the vehicle documentation in his name. The subject delivers the requested papers, signs various forms and pays the current fee. In the office in question they then give you a receipt detailing the documentation you submitted and the payment for the procedure. A week later, the man can now proceed to remove the documents from his new car: in order for them to deliver them, he has to present the receipt.
In addition to all of the above, we cannot ignore the existence of what is known as financial proof. This is a document that not only accredits but also validates what is the provision of services between two parties or the transfer of goods.
We cannot ignore this type of voucher because it has a series of very significant characteristics such as:
-They derive from what is an economic obligation.
-Come to collect VAT.
-As its own name indicates, it has a marked financial nature.
-In the same must appear a series of fundamental data such as these: the date, the concept of the transaction, the name of the people involved in that or what is the date of satisfaction of the agreement. That without forgetting that the type of financial proof that it is must also be very clear.
No less relevant is to underline that there are essentially three types of financial vouchers. Those are none other than the settlement of purchase, invoices and the so-called receipt of fees.
The merchants, meanwhile, must provide vouchers to their customers to prove the sales made. Such vouchers, such as invoices or tickets , they serve before him State as a record of operations and are used to pay taxes derived from commercial activity.
A purchase order , a I refer , a note of credit and one boarding pass They are also vouchers that are issued and received in different contexts.