If you don't accept credit cards in your business, you're limiting your customer base. Just 26% of transactions are paid for using cash. Most often, cash is used for purchases of $10 or less, at 49% of all transactions. Consumers who prefer to pay with their credit cards may opt to go elsewhere if you don't accept credit cards, making you lose out on what could have been a large sale.
Accepting credit cards can also allow you to expand your product or service offerings. If you want to sell online, it's difficult for consumers to pay for things with cash, especially if they don't have a bank account. When you accept more forms of payment, you can increase your customer base both in-person and virtually.