Delhi's MCD property tax system is calculated using the Unit Area System, factoring in the property's size, age, use, and location. The city is divided into categories A to H, with higher tax rates for upscale areas and lower rates for less developed zones. Property owners must register their properties and pay taxes either online via the MCD portal or offline at ITZ cash counters and zonal offices. This comprehensive guide explains how to calculate property tax, understand your category, and complete the payment process without errors.