Addressing workers at Karachi Company, Khan said a change in Pakistan would be evident on July 25.
"I would hand over tax evaders to FIA and NAB," said Khan.
Prior to elections, he also promised to focus on improving the state of the country's health and education sectors.
"I will expand the work done on education and health sectors in the Khyber Pakhtunkhwa (KP) to the entire country," said Khan.
If brought to power, Khan said, "PTI's government would double the tax collection by building confidence of taxpayers that their money would be spent for betterment of the people," Khan was quoted by the Express Tribune as saying.
He also condemned the corruption that had stagnated the country's development.
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