"4 in 1" e-services for land administration, household administration, tax return filing and motor vehicles.
The "4 in 1" e-services are launched by Land Administration Bureau and its Land Administration Office, Civil Affairs Bureau and its Household Registration Office, Local Tax Bureau, and Taichung Motor Vehicles Office. A citizen of Taichung City, after completing his/her household registration in the Household Registration Office, can now fill in an application form to change his/her relevant data and information at the above-mentioned four agencies.
Benefits:
1. Convenient: People can now can enjoy the services of four agencies at one single window, free from traveling in between the agencies and helping to reach the goal of energy saving and carbon reduction.
2. Swift: Data are transferred and updated through electronic filing systems. 
3. Saving: The service system can save your time, money, and effort.
4. Accurate and environmentally friendly: Data and information are transmitted correctly, saving energy and reducing paper use.