Is it a legal requirement to have a cookie policy?

It is a legal requirement to have a cookie policy if you are collecting personal data from users through the use of cookies on your website. This requirement is based on the jurisdiction your website is operating in. The EU General Data Protection Regulation (GDPR) and the ePrivacy Directive (also known as the EU Cookie Law) require that you disclose information about your use of cookies and their purpose. Some countries, like the United States, have state laws (like the CPRA) that may also require a cookie policy. In general, it is good practice to have a cookie policy to ensure transparency and compliance with privacy laws.