Virtual card number.
In plain English
A virtual card number is a substitute card number tied to your real account but safe to share with a website. You can often lock it to one merchant or set it to expire, so it is useless anywhere else. If that merchant gets hacked, thieves get a number that only worked at that one store, and you can shut it off without replacing your real card. Many banks and wallet apps let you generate one in a few taps.
01Why it matters
It limits the damage from a data breach or a shady website, because the leaked number cannot be used elsewhere and can be canceled on its own. That can save you the hassle of replacing a card and updating every autopay tied to it.
02The math, step by step
You sign up for a free trial that asks for a card. You create a virtual card number locked to that one merchant. When the trial ends and they try to charge you on a different service, the charge is declined because the number only works for the original merchant.
03What this is NOT
A virtual card number is not a separate prepaid card with its own balance. It draws from your real account. It is just a disposable face for that account, not a different pot of money.
04Receipts
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Plain-English answers from our glossary. Receipts included. Never advice.
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