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Glossary and terms about credit cardsHome » Credit Card Glossary
Blocks
A block is a reserve placed on a consumer's credit limit or debit balance to cover the final, as-yet-unknown amount of a transaction. Blocks are likely to occur when you use your card at gas stations, restaurants, hotels, or other locations where the total transaction amount can vary due to tips, tabs, and the size of your gas tank. Blocks may be lifted within minutes, hours, or days.