7 Mistakes You’re Making with E-Filing Compliance (and How to Fix Them)

E-filing compliance is operational, not optional. Errors create rejects, delays, audit exposure, and EFIN risk. The fixes below are process-based and repeatable, built for ERO & Service Bureau Operations.

1) Missing signatures (or using the wrong signature method)

Missing signatures are a top cause of rejected returns and downstream disputes. The issue is usually not the form: it’s the workflow: forms are generated, but the signature step is not controlled.

Where this shows up

• Form 8879 (or applicable authorization) is not signed before transmission
• Spouse signature missing on joint return authorization
• E-sign tool used, but the required audit trail or consent language is incomplete
• Signed form exists, but not tied to the final version of the return (mismatch)

Fix

• Require a “signature gate” before transmission: no transmit until authorization is logged as complete.
• Standardize your signature options (wet, e-sign, remote) and document which is allowed for each product line.
• Lock the return version after signature: if the return changes, re-sign and re-store.

Quick checklist

• Correct authorization form created for the filing type
• Primary and spouse signatures captured (if applicable)
• Signature date captured
• Authorization matches final return version
• Form stored in the client record with a standard naming convention

2) Incorrect EFIN usage (or sharing credentials across entities)

EFIN controls are a compliance boundary. Common errors include using the wrong EFIN for the office, using a partner’s EFIN “temporarily,” or mixing EFINs across brands and locations.

Where this shows up

• Multiple locations transmit under one EFIN without clear ownership
• Staff transmit using shared portal logins
• The EFIN used does not match the business structure operating the office
• Returns are transmitted under an EFIN not tied to the preparer’s operational control

Fix

• Map EFIN usage to your org chart (entity → location → responsible official → user roles).
• Prohibit shared credentials. Use named user accounts with least-privilege access.
• Run an internal monthly “EFIN transmission report” to confirm which EFIN transmitted which returns.
• If you do not have an EFIN or need a compliant transmission path, use an ERO service structure designed for that purpose.

Related reading: https://www.tigtaxpros.com/2025/12/27/the-ultimate-guide-to-ero-services-everything-you-need-to-succeed-without-an-irs-efin

Operational control points

• A single owner for each EFIN
• A written policy for EFIN assignment and access
• A procedure for staff offboarding (account removal same day)

3) Failing to verify client identity (and relying on “what the client said”)

Identity verification is part of compliance and fraud prevention. The problem is inconsistent application: some clients get full checks, others get minimal checks depending on workload.

Where this shows up

• SSN/ITIN not validated against source documents
• Expired IDs accepted without an alternative verification step
• Dependent information accepted without documentation
• Prior-year data reused without reconfirmation
• Remote clients are onboarded with weak proofing

Fix

• Create a uniform ID verification standard for all clients (in-person and remote).
• Require two-step verification for remote onboarding (ID + secondary factor or knowledge-based check, depending on your process/tools).
• Add a “source document capture” step: ID and tax documents stored with a timestamp and staff initials.

Minimum verification workflow

1. Capture government ID for taxpayer (and spouse if applicable)
2. Confirm SSN/ITIN on official document where available
3. Validate address and contact info
4. Confirm dependent eligibility and relationship support (at least at intake)
5. Log verification method in the client record

Tip
If you use a service bureau model, align verification steps with the bureau’s intake requirements so the file is complete before it reaches production.

4) Poor document retention (no retention plan, no index, no proof)

Retention is not “saving PDFs.” Compliance requires that you can produce the right document, for the right client, for the right year, quickly. Most failures are search failures.

Where this shows up

• Files are saved to desktops or email threads
• No naming convention (documents are “scan1.pdf”)
• No separation between draft and final documents
• No retention schedule, so records are deleted too early or kept unsafely
• Signed authorizations are stored but not retrievable in under 5 minutes

Fix

• Implement a retention policy with:
  • storage location(s)
  • access roles
  • naming standards
  • retention period
  • deletion and legal hold rules
• Store documents by Client → Tax Year → Category (ID, Income, Deductions, Authorizations, Notices).
• Require a “final package” bundle at filing: authorization + final return + key support.

Simple naming convention

• 2025_8879_Signed.pdf
• 2025_W2_EmployerName.pdf
• 2025_1099NEC_PayerName.pdf
• 2025_ID_Primary.pdf

5) No pre-transmission quality control (QC is informal or optional)

E-filing compliance fails when QC depends on memory. This shows up as missing attachments, wrong routing numbers, incorrect bank products selection, and inconsistent preparer notes.

Where this shows up

• Repeated reject codes for the same office
• Bank product enrollments missing required consents
• Incorrect direct deposit data
• Dependent SSN and DOB mismatches
• State return not transmitted when expected

Fix

• Build a two-stage checklist:
  1. Intake completeness (ID, documents, engagement terms, consent)
  2. Pre-transmission QC (return math, diagnostics cleared, authorizations, bank info, state link)
• Require a second set of eyes for a defined risk tier:
  • new clients
  • refundable credits
  • bank products
  • remote onboarding
• Use a reject log: track rejects by type, preparer, and root cause.

Pre-transmission QC list (minimum)

• All software diagnostics cleared or documented
• Federal and state selections confirmed
• Bank info verified from source (voided check or bank letter when feasible)
• Credits supported by required documentation and notes
• Authorization signed and stored
• Transmission confirmation captured

6) Inconsistent ERO and preparer role boundaries (who did what is unclear)

Operational compliance requires clear role separation: who prepared, who reviewed, who transmitted, and who owns the ERO functions. Without this, accountability collapses.

Where this shows up

• A preparer transmits returns under an ERO account without documentation
• Review and transmit steps are performed by the same person with no control
• Remote teams use the same profile and overwrite notes
• Service bureau clients do not know what the bureau covers vs. what the office must do

Fix

• Define roles in writing:
  • Preparer
  • Reviewer
  • Transmitter (ERO function)
  • Admin (user access + retention)
• Enforce role-based access in software and portals.
• Require activity logging: every file should show who completed each step and when.

If you use TIG Tax Pros ERO services
Use the model to standardize transmission, audit trails, and workflow boundaries so “prepared by” and “transmitted by” are always traceable. Start with your operations baseline at https://www.tigtaxpros.com

7) Not verifying acknowledgments (you assume “submitted” means “accepted”)

E-filing is not complete when you click transmit. It is complete when you receive and store acknowledgments and resolve rejects. Many compliance issues are caused by missing or unmanaged acknowledgments.

Where this shows up

• Client is told “filed” but the return was rejected
• Rejected returns are not corrected within a controlled timeframe
• Acks are not saved, so you cannot prove acceptance
• State acknowledgments are missed while federal is accepted (or vice versa)

Fix

• Add an “acknowledgment gate” after transmission:
  • confirm federal ack
  • confirm state ack
  • store acceptance reports
  • update client status only after acceptance
• Set a reject SLA:
  • same day triage
  • 24–48 hour correction target (depending on your office policy)
• Maintain a reject tracker with:
  • reject code
  • cause
  • fix applied
  • resubmission timestamp
  • final acceptance timestamp

Acknowledgment control

• Federal accepted report saved
• State accepted report saved (if applicable)
• Client notified only after acceptance
• Rejections documented and resolved

A simple compliance system that prevents most of these issues

A workable system uses three documents and one recurring review.

1) One-page intake checklist (required fields only)

• Identity verification completed
• Source docs uploaded
• Engagement terms and consent captured
• Return type confirmed (fed/state)

2) Pre-transmission checklist (must be completed every time)

• Authorization signed and stored
• Diagnostics cleared
• Bank info verified
• Reviewer initials (if required by risk tier)
• Transmit under correct EFIN and correct user

3) Post-transmission checklist (acknowledgment gate)

• Ack received and saved
• Rejects resolved
• Final package archived under naming standard

4) Monthly internal audit (30–60 minutes)

Sample 10 files:

• 3 new clients
• 3 refundable credit files
• 2 bank product files
• 2 random

Check only:

• authorization present
• ID verification logged
• ack saved
• retention structure correct
• EFIN used correctly

Professional disclaimers

This content is for general informational purposes only and does not constitute legal, tax, or accounting advice. E-filing requirements and IRS/partner rules may change and can vary by filing scenario, jurisdiction, software provider, and banking partner. Consult qualified advisors and refer to current IRS guidance and your provider agreements before implementing operational or compliance changes. Use of TIG Tax Pros services is subject to applicable terms and policies: https://www.tigtaxpros.com/termsfeed/terms-and-conditions and https://www.tigtaxpros.com/termsfeed/privacy-policy