Table of Contents 1 A brief explanation of tax returns 2 When do you have to file your tax return in 2021? 3 Summary of key points for 2021 final tax return 3.1 Reduction of employment income deduction amount 3.2 Review of basic deduction for high-income earners 3.3 Deduction amount of blue tax return special deduction... Read more [2021 tax return deadline extended! ] We have summarized the main points of final tax return in an easy-to-understand manner!