Taliban finances

The C.I.A. recently estimated in a classified report that Taliban leaders and their associates had received $106 million in the past year from donors outside Afghanistan, a figure first reported last month by The Washington Post. Private citizens from Saudi Arabia, Pakistan, Iran and some Persian Gulf nations are the largest individual contributors, an American counterterrorism official said.
Top American intelligence officials and diplomats say there is no evidence so far that the governments of Saudi Arabia, the United Arab Emirates or other Persian Gulf states are providing direct aid to the Afghan insurgency. But American intelligence officials say they suspect that Pakistani intelligence operatives continue to give some financial aid to the Afghan Taliban, a practice the Pakistani government denies.

Drugs is a second source of income.

A third major source of financing for the Taliban is criminal activity, including kidnappings and protection payments from legitimate businesses seeking to operate in Taliban-controlled territory, American authorities say.

The United States has created two new entities aimed at disrupting the trafficking networks and illicit financing. One group, the Afghan Threat Finance Cell, is located at Bagram Air Base, north of Kabul. The second group, the Illicit Finance Task Force based in Washington, also aims to identify and disrupt the financial networks supporting terrorists and narcotics traffickers in the region.

See also this article in the WP.