Polkadot does not have a cap on the number of coins that can circulate. As a Proof-of-Stake (PoS) cryptocurrency, DOT is inflationary, meaning that its circulating currency will continue to grow. ... Of course, this inflationary cap and supply caps are subject to change via governance.

Does Polkadot have a max supply?

No maximum supply. Inflation is currently 10% but that is changeable via governance.

Is Polkadot crypto limited?

Since DOT is on its own native blockchain and is a brand-new cryptocurrency, you are effectively limited to two options: the Polkadot.