A billing address is an address that the payment card issuer (such as a bank) uses to send your credit card statement or bill. It is important to keep your billing address up to date so that you can receive your bills and statements in a timely manner. If your billing address is not correct, you might not receive your statement, and you might miss a payment. Late payments can result in fees, and it can also affect your credit score.
For online purchases, the billing address is the address that is associated with the payment method that you are using. When you enter your payment information, you will be prompted to enter the billing address that is attached to the payment method. This is done to make sure that the person making the purchase is the owner of the payment method.
It is also important to make sure that your billing address matches the address that is associated with your credit card or payment method. If you move, make sure to update your billing address on all of your accounts to avoid any issues or delays with your payments.