Do I need to declare an inheritance in Switzerland?

Yes, in most cases you should declare an inheritance, but whether you pay inheritance tax depends on the circumstances. Switzerland does not levy a federal inheritance tax, but many cantons have their own inheritance and gift tax rules. Inheritance tax, where applicable, is generally based on the deceased person's canton of residence and your relationship to them. Once you inherit assets, they also become part of your taxable wealth and must generally be declared in your Swiss tax return.