There is a common misconception that buying a house in Jersey is a quick and easy way to benefit from the island’s "tax-free" status. The reality, however, is that Jersey isn't a "no tax" jurisdiction. Jersey residents are required to pay tax on their personal income and may also pay additional contributions towards specific public services. You should also note that your worldwide income will be considered when it comes to how Jersey will calculate your income tax, although you may be able to benefit from double taxation agreements.
Corporate income tax in Jersey sits at 0% for most businesses, and it's for this reason the island is known for being a particularly favourable environment with regards to taxation rules. However, there are exceptions to this 0% income tax rule, so you will want to seek expert advice before you redomicile or set up a business on the island. You should also request advice from local specialists regarding specific implications of residing in Jersey regarding your overall tax situation and how you will be affected.