Unless they have already done so, Latvian residents (and non-residents as well, but this article is meant for residents) are now expected to prepare and file their annual income tax return for 2017 in order to calculate and pay tax on any taxable income on which tax has not been paid during the year, and to recover any overpaid tax on any unclaimed balance of personal allowance, allowances for dependants, allowable expenses, contributions to private pension funds (PPFs), life insurance premiums etc.