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The layouts of sub-fields before and after the change are summarized below. Two digits will be added to the sub-field allocated for BINs, and the sub-field used to identify the cardholder’s account will be reduced by two digits. When the eight-digit BIN change takes effect, the length of most credit and debit card numbers will continue to be 16 digits. While ISO-compliant credit and debit card numbers can range from 8-19 digits, most are 16 digits. How Will 8-Digit BINs Change Credit Card Number Formats? If you haven’t launched a project to make this important change, we recommend you start now. Making the systems and process changes required to support eight-digit BINs can be a major effort for merchants and payment processors, and the consequences of not having support in place by April 2022 will be significant. Financial institutions may begin issuing cards with the new eight-digit BINs at any time after April 2022.
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ISO first announced the eight-digit BIN expansion in 2015, and it will become effective in April 2022, at which time all merchants and payment processors must be able to support the new BIN length. To address this BIN shortage, the International Organization for Standardization (ISO) is expanding the length of BINs from six to eight digits.
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As a result, the industry is running out of available Bank Identification Numbers (BINs), which identify the payment brand and financial institution issuing a credit or debit card and make up the first six digits of each card number. The payments ecosystem is growing at a breakneck pace.