This card is a charge card. Meaning, it does not come with a pre-defined spending limit, giving you the flexibility to spend as much as you can — with caution. It should not be construed as something where Amex will let you charge unlimited and ridiculous amounts of money on your Platinum Card. They will still keep an eye on things, but yes, you aren't restricted by a limit. Additionally, you are required to pay off the balance in full every month. If it worries you whether a large purchase will trigger something negative, you can always check the spending power first.