01Residence beats location
The first question is not where the property sits but where you are tax resident. Many investors assume that a zero-tax destination like the UAE automatically produces tax-free income. That is only true if your home jurisdiction agrees you are non-resident there.
If you remain tax resident in a country with worldwide taxation, foreign rental income is usually taxable at home — often with limited credit for tax paid abroad. The India→UAE corridor is the clearest example on this site: Indian residents pay full slab rates on Dubai rent because the DTAA credit is zero when the UAE charges zero.
02Treaties allocate taxing rights — they do not always exempt income
Double-tax treaties determine which country may tax which income. Some articles use the exemption method; others use the credit method. Reading a headline like "UAE has no income tax" tells you nothing about your liability in Mumbai, London, or Lisbon until you know your residence status and the relevant treaty article.
03Exit taxes and disclosure obligations matter as much as yield
Capital gains, inheritance, and annual wealth charges can dominate the lifetime return of a property investment. Non-resident landlords in the UK face a 60-day CGT filing window; Indian residents must disclose foreign assets in Schedule FA. Underwriting only on gross yield without modelling these obligations is how research pages become sales pages.