Evidence with 181 (Form of Registration filed for modification) (Income Tax)
Evidence of tenancy / ownership of business premises
Paid utility bill of business premises not older than 3 months

Change Your Personal Details
A person can change their registration information recorded for filing Income Tax Return in two (2) possible ways.

Changing information through Iris, a person can change/update information by logging into Iris.
Following information can be updated by the person through Registration Form 181 (filed for modification) Income Tax:
Mobile number
Personal/Residential Address
Business Address
Addition of Business Branches
Legal Representative u/s 87 of Income Tax Ordinance 2001
Bank Account
Changing Information by visiting Regional Tax Office (RTO)
For changes in registration regarding the following issues, the person will have to visit their relevant RTO:
Discontinuance of business
Jurisdiction for Income Tax Return assessment
Deregistration
Updating CNIC number
Email
Updating Pakistan Origin Card (POC)
A person will have to take relevant documents to RTO in order to successfully change details regarding Income Tax Registration.

Sole Proprietorship Registration

181 Form of Registration filed for modification (Income Tax) FBR Sole Proprietorship