To make successful banking transactions and operations, you need to have some information at hand. And one of the most important is the account's DV, the verification digit.

This numeric code certifies that your account is real and that it will give permission to complete payments, purchases, transfers, etc.

Therefore, it is extremely important to know where to find it on your current or savings account card in question.

And, of course, what to do if there are two digits or a check digit with the letter X. This way, you will have no problem carrying out your routine transactions.

Want to know more about the check digit, how to find it and how it works? Then come with us and continue reading!

The account number is the verification digit. This sequence of numbers is present in some documents, such as CNPJ, RG, CPF and, of course, as we will explain today, in bank accounts.

It is a code used to validate whether or not your account number exists. It consists of one or more real digits, which are generally numbers, positioned at the end of the numerical sequence that identifies your unique account number.

Its main objective is to avoid data transmission or typing errors, preventing fraud or inconsistencies in payment systems or even the use of your data to make purchases and payments illegally.

Therefore, whenever we carry out a banking transaction between accounts, banks require that the DV be informed.

If this information is not provided, the transaction will not be carried out, or, in the event of errors, your account or card may be blocked, your purchase cancelled or not accepted, or the amount will be returned to the original account.

The calculation of the verification digit is done according to the bank. Most traditional banks, such as Caixa Econômica Federal and Banco do Brasil, for example, use only digits. Other banks, such as Citibank or Agiplan, use two digits in the verification digit, and others use the letter X.

The most common way to calculate this check digit is by multiplying all the account identification numbers and dividing them by 11. Then, the remainder of this division is subtracted from 11.

The result of the calculation will be your verification digit. Remember that, from institution to institution, this calculation method may change.

As we mentioned in the previous topic, some banks have two verification digits, which differentiates them from more traditional financial institutions, such as Caixa Econômica Federal or Banco do Brasil, which only have one.

Therefore, anyone who has a card or account that has two digits may have difficulty making payments or transactions or even entering their data into some systems, such as the Federal Revenue Service, which only accepts accounts with one verification digit. 

However, there is nothing to worry about. When faced with this problem, customers of banks that have two security digits should only consider the last number.

For example: if the account number is 144567-09, it will be entered into the system or at the time of a transaction as 144567-9.

Your account's verification digit will be used whenever you receive or send transfers or enter your bank details on a platform, as this is the way to recognize where the amount in question will be transferred to.

Using this data, it is possible to know the location where the account was opened, the branch that manages it and, of course, the information necessary to make your transfers.

Therefore, the check digit's function is to authenticate and validate your data, and also to validate your branch and account numbers in financial transactions.

It is necessary for transfers and banking operations, as mentioned above, to prove that your account is real and valid.

Some banks use the letter X as a verification digit for checking or savings accounts. To solve this problem and enter your details correctly, simply change “x” to the number 0, and your banking transaction and transfer will be successful.

However, it is necessary to make a security addition about the verification digit: this is an extremely important piece of information about your account, as is your personal password.

Therefore, do not share it on websites you do not trust or with anyone. Keep this information safe to avoid fraud in your name, problems with your money or even having your account blocked.

Just as the CVV on a credit card gives the okay for transactions to take place, the DV, depending on the bank transaction or if it is registered as someone's reference account, can be used without your permission.

To find the verification digit for your account, simply locate the card's expiration date, which is usually found next to the numerical sequence of the savings or checking account, right after the hyphen or space.

This number that comes after the hyphen must always be provided when making purchases and making bank transfers. Furthermore, on debit cards issued by banks, on the front, after the account number, you will also find the verification digit, also known as the control digit.

So, did you understand what the account DV is and how to find it?

We hope so! Finally, for more content like this, read our recommended content below.

Until later!