How Long Does an Amended Tax Return Take? The 1040-X Timeline
The IRS’s official guidance says to allow 8 to 12 weeks for a Form 1040-X amended return to process, and up to 16 weeks in some cases — but in practice, recent years have run longer, with the National Taxpayer Advocate reporting average processing of over 5 months for the amended returns handled in FY2025. […]