TIN ComplianceA resource from TIN Comply
IRIS error codes

IRIS error codes: the rules every form shares

One page for each of the 14 IRIS business rules filers hit across forms: payee and issuer names and TINs, missing addresses and contacts, Combined Federal/State Filing states and the error threshold. Each says what the rule checks, why it fires and how to fix it.

Tax year 2026

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.

Names and TINs

The checks against IRS records. A recipient mismatch is accepted with errors; an issuer mismatch rejects.

  • SHAREDIRFORM014 Report error Recipient name and SSN do not match IRS records
  • SHAREDIRFORM015 Report error Recipient business name and TIN do not match IRS records
  • SHAREDIRFORM023 Report error Recipient TIN is missing
  • SMF017 Reject Issuer name and TIN (individual) do not match IRS records
  • SMF018 Reject Issuer business name and EIN do not match IRS records
  • FS1H001 Report error Same recipient TIN twice without unique account numbers

Combined Federal/State Filing

Forwarding forms to participating states.

Contacts, addresses and FATCA

Information IRIS needs to reach you and the recipient.

  • SHAREDIRFORM016 Report error, reject over threshold Recipient address missing
  • SHAREDIRFORM018 Reject FATCA box checked without an account number
  • SMF019 Report error Foreign issuer address without the foreign entity flag
  • SMF020 Report error Submission has no contact person
  • SMF021 Report error Contact phone missing
  • SMF022 Report error Contact email missing

The error threshold

The rule that turns accepted-with-errors into a reject.