These are errors and rejects every filer can get when sending information returns to IRIS, whether through the free IRIS Taxpayer Portal or through filing software. IRIS reports each one on the acknowledgment by rule number.
Form 8809 business rules
Besides the rules on this page, IRIS checks the issuer and contact rules for its submission; those are on the cross-form error code pages. The IRIS Taxpayer Portal also takes Form 8809 as a CSV upload, using the IRS template for the form.
In the tax year 2026 rule set: 5 reject. A reject stops the submission; a report error is accepted with errors and counts as filed; past an unpublished threshold, report errors reject the submission. The descriptions are our own summaries; your acknowledgment gives the rule number.
| Rule | Severity | What it checks |
|---|---|---|
| F8809002 | Reject | The extension request must be filed on or before the due date of the form it applies to. |
| F8809015 | Reject | A request for an additional extension must check one of the listed reasons (federally declared disaster, multiple FEMA disasters, absence of the responsible person, first year of the business, or payee statements not received). |
| F8809016 | Reject | An extension for Form 1099-NEC or W-2 must check one of the listed reasons. |
| F8809017 | Reject | When an additional extension or any of the listed reasons is checked, the signature section is required. |
| F8809018 | Reject | An additional extension cannot be requested for Form 1099-NEC or W-2. |
Elements of Form8809Detail
Each Form 8809 return is one Form8809Detail record in a submission of group 2. The table lists its 11 elements in schema order for tax year 2026: whether each is required, and the format IRIS accepts. Element names are the ones the IRS uses in its IRIS ATS examples and Publication 5718; the IRS revises the schema each year.
| Element | Required | Format |
|---|---|---|
ContactPersonInformationGrp | Optional | Group of elements |
IRElectronicSubmissionInd | Required | 1 (yes) or 0 (no) |
IRPaperSubmissionInd | Required | 1 (yes) or 0 (no) |
AdditionalExtensionInd | Required | 1 (yes) or 0 (no) |
ApplicableFormTypeCd | Required | Code from a list of 14 values |
FederallyDeclaredDisasterInd | Required | 1 (yes) or 0 (no) |
MultipleFEMADisastersInd | Required | 1 (yes) or 0 (no) |
RspnsAbsenceInd | Required | 1 (yes) or 0 (no) |
FirstYrEstablishmentInd | Required | 1 (yes) or 0 (no) |
PayeeStmtNotRcvdInd | Required | 1 (yes) or 0 (no) |
JuratSignatureGrp | Optional | Group of elements |