The United States territory of Puerto Rico is seeing a resurgence of interest among crypto investors attracted by the fact it doesn’t charge federal income tax and eligible investors can pay zero taxes on their crypto gains.

Under local law Act 22, those who live in Puerto Rico for at least half of the year are exempt from taxes on interest, dividends and capital gains — meaning they can keep most or all of the profits from crypto or other investments without having to renounce U.S. residency.