What is the maximum supply of Bitcoin?

The maximum supply of Bitcoin is capped at 21 million bitcoins. This limit is hard-coded into the Bitcoin protocol and is a fundamental aspect of its design. Once all 21 million bitcoins have been mined, which is expected to occur gradually over time due to the halving process, no more bitcoins will ever be created. This finite supply is intended to create scarcity and is one of the key features that distinguishes Bitcoin from traditional fiat currencies, which can be printed indefinitely by central banks.