EMdriver

Hi team, I have read through the guidance and still have a question. The personal income tax period in Japan is counted from 1/1 to 31/12 each year (this is the tax year in Japan). But in UK it is from 6/4 to 5/4. In this case, for the rental income I earned from 1/1 to 5/4 in 2025, I do not have to file it until 1/1 in year 2026 in Japan, but during this period, the income already falls into current tax year 2025 in UK. So does it mean I still have to declare this income in UK during current tax year 2025, even this income is not yet declared in Japan? If so, how to imply the Double Taxation Relief as no tax is being paid in Japan yet? (Tax will be paid in Japan in next year 2026) Thanks.

Hi team, I am a UK tax resident. If I have rental income from property in Japan, and if I have already paid the property rental income tax to Japanese government, do I still need to declare this property income from Japan to HMRC UK when submitting self assessment? (I am not sure if I have to pay double tax for this foreign rental income ?) Thanks