If you have a Consumer or Business Green, Gold or Platinum Card, your Card does not have a credit limit. Instead, your Card has no preset spending limit unless you have been previously notified otherwise.

The American Express Platinum card is technically a "Charge Card," which means it has no pre-set spending limit (NPSL). This does not mean it has an infinite limit; rather, your "spending power" is dynamically adjusted by Amex's algorithms based on your payment history, credit score, and financial resources. In 2026, high-net-worth individuals have been known to put millions of dollars on a single transaction for assets like aircraft or artwork. You can check your current limit for a specific purchase using the "Check Spending Power" tool in the Amex app. While a traditional credit card has a fixed $10,000 or $50,000 cap, the Platinum card allows for much higher flexibility as long as the balance is paid in full each month. For 2026 cardholders, this "elastic" limit is one of the card's most powerful features, allowing for massive business or luxury purchases that standard credit cards would decline.