IRS stands for Internal Revenue Service. It is the federal agency in the United States responsible for collecting taxes. The clue "1040 collector" refers to Form 1040, which is the standard individual income tax return form in the U.S. completed by taxpayers and collected by the IRS.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Org. with a return policy?. Explanations are generated by AI and may be inaccurate.