If you provide the information the IRS requested, generally within 60 days the IRS should correct your account and resolve the refund issue.
If you file missing or late returns, generally within 90 days, the IRS will process your returns and issue your refunds.
If you don’t provide the information or file the missing returns, your refund will be delayed longer.
If you file an amended return (IRS Form 1040X, Amended U.S. Individual Income Tax Return), generally within 90 days, the IRS should make any necessary adjustments and issue the refund.
However, if you’re facing serious financial difficulties and need your refund immediately, contact the Taxpayer Advocate Service. It may be able to expedite your refund.