Which country has the lowest tax for expats?

I'm an expatriate working in the field of finance, and I'm considering relocating to a country with a lower tax burden. Could you please tell me which country has the lowest tax rate for expatriates? I'm particularly interested in countries that offer tax incentives for financial professionals. Additionally, I would like to know if there are any other factors I should consider when making my decision, such as the cost of living, job opportunities, or the overall business environment. Thank you for your assistance.