Instead of expatriating, it is better to consider retaining your U.S. citizenship and becoming a resident of Puerto Rico. You sign a 20 year contract with the government. As a result, as an individual, you can pay zero federal and state tax on local interest, dividends and capital gains. The incentives for business are also phenomenal: a 4% rate with profits paid to owners tax free. A business must have 3 employees of which husband and wife can count as two.