The Howey Test determines whether a crypto token is a security. If it is, it must comply with SEC registration rules — and most ICOs/token sales would fail this test. Understanding the four prongs of the Howey Test is essential for evaluating risk in the crypto market, particularly for tokens tied to active development teams. For the broader regulatory picture, read our US crypto regulation overview, and see how securities classification intersects with DeFi regulation and decentralised governance.