When the IRS requests documents, your return is placed on hold. Depends on what the situation is, it would take about 6–8 weeks for the IRS to process, review, and finalize the refund once they receive the documents.
If the requested documents are for identity verification, refunds are typically issued within 6 to 9 weeks.
If the documents the IRS asks for were for a deeper audit or examination, it can take 45–180 days.
You should keep tracking your refund directly on the IRS website:
Where's my Refund
