Iranian Foreign Ministry Spokesman Saeed Khatibzade said Tuesday that the new claims are part of the US propaganda to "cover up" its miscalculations in Afghanistan.
Russia had previously been accused of paying bounties to Taliban, which Moscow has denied as well.
A Tuesday report on CNN claimed that the so-called bounties were "paid by a foreign government, identified to CNN as Iran, to the Haqqani network -- a terrorist group that is led by the second highest ranking leader of the Taliban -- for their attack on Bagram Air Base on December 11."
Instead of blaming others the US should "act responsibly" and end its "catastrophic presence" in Afghanistan, Khatibzade said.
"The US government has no response for the families of the soldiers killed in Afghanistan," he further noted.
The United States led a military coalition of its allies in 2001 to invade Afghanistan to topple a Taliban regime, believing it was harboring the al-Qaeda terrorist group.
Ever since, the war-ravaged country has been unstable, witnessing frequent terrorist attacks.
More than 100,000 Afghan civilians are estimated to have been killed or injured in the past decade, more than 10,000 in 2019 alone.