information:classification
Revenue collection

As home to Pakistan's largest ports and a large portion of its manufacturing base, Karachi contributes a large share of Pakistan's collected tax revenue. As most of Pakistan's large multinational corporations are based in Karachi, income taxes are paid in the city even though income may be generated from other parts of the country. As home to the country's two largest ports, Pakistani customs officials collect the bulk of federal duty and tariffs at Karachi's ports, even if those imports are destined for one of Pakistan's other provinces. Approximately 25% of Pakistan's national revenue is generated in Karachi.

According to the Federal Board of Revenue 's 2006–2007 year book, tax and customs units in Karachi were responsible for 46.75% of direct taxes, 33.65% of federal excise tax, and 23.38% of domestic sales tax. Karachi accounts for 75.14% of customs duty and 79% of sales tax on imports, and collects 53.38% of the total collections of the Federal Board of Revenue, of which 53.33% are customs duty and sales tax on imports.