Table of Contents1 A simple explanation of tax returns2 When are tax returns due in 2021?3 Summary of key points for tax returns in 20213.1 Reduction in the amount of the salary income deduction3.2 Review of the basic deduction for high-income earners3.3 Deduction amount for the special blue return deduction... Read more [2021 filing deadline extended!] We've put together a simple and easy-to-understand summary of key points for tax returns!