The notice was issued on February 9, a day before the counting of votes in Delhi Assembly elections was taken up which the AAP had swept.
The CBDT, which issued a statement today in which it did not name the political parties or entities, said the notices to AAP and others have sought information about the identity of the contributors and other relevant details necessary to complete the probe.
The AAP since then has been saying that the government with all its enforcement agencies was free to probe the donations.
Confirming receipt of the notice, AAP spokesperson Atishi Marlena said the notice was sent to the party's Patel Nagar office.
"We are open for any probe by the Income Tax department or the Enforcement Directorate. We want this issue to be probed so that this allegations can be put to rest. But while welcoming the probe, we also want an SIT to probe political funding of all political parties and not just AAP," she said.