Some tax returns take longer to process than others for many reasons, including when a return:
- Includes errors
- Is incomplete
- Is affected by identity theft or fraud
- Includes a claim filed for an Earned Income Tax Credit or an Additional Child Tax Credit.
- Includes an Injured Spouse Form, which could take up to 14 weeks to process
- Needs further review in general.
Only the IRS can tell you why yours is delayed; they do not notify TT.
Tax Season Refund Frequently Asked Questions | Internal Revenue Service (irs.gov)