The tax system in Pakistan is operating on 

• At promoting voluntary compliance Documents 
• Self Assessment Basis
• self-policing
  

The Federal Board of Revenue (FBR) on 23 06 2022 imposed a 10% regulatory duty on the import of motor spirit — a transparent, petroleum-derived liquid that is used primarily as a fuel in internal combustion engines — from June 30, 2022.

Salary Income is exempt for up to 600,000

if wrong plz tell us in comments

FBR was Founded on July 1, 1950

The Federal Board of Revenue, formerly known as the Central Board of Revenue,

All properties, assets and records of the Central Board of Revenue were transferred to FBR by the enactment of FBR Act 2007.

In the FBR Act 2007, “fiscal laws” means laws relating to taxation

All properties, assets and records of the Central Board of Revenue were transferred to FBR by the enactment of FBR Act 2007.

The Central Board of Revenue became the Federal Board of Revenue by the enactment of FBR Act 2007

In 1944, a full-fledged Revenue Division was created under the Ministry of Finance.

After independence, this arrangement continued up to 31st August 1960 when on the recommendations of the Administrative Re-organization Committee,

FBR was made an attached department of the Ministry of Finance.

FBR primarily operates through its main collection arms comprising 

• Regional Tax Offices (RTOs) and
• Large Taxpayer Units (LTUs)

across the country.

In order to safeguard the government's interests,

FBR has established a central risk-based and automated “Tax Audit Management System” (TAMS),

which is constantly reviewed and improved.

In order to achieve the aforementioned goals, Taxpayers Audit wing was established in January 2003.

The Revenue Division was abolished in January 1995, and

FBR reverted back to the pre-1991 position.