Based on IRS guidance, industry best practices, and current filing requirements.
IRS System and Regulatory Change
Understand IRS System Updates
- Determine which IRS system you will be filing with, FIRE or IRIS
- If filing via FIRE, confirm the 1220 text file is formatted correctly
- Learn about the FIRE system sunset occurring December 2026
Prepare to fully transition to IRIS before FIRE retirement
- If filing via IRIS
- Confirm your vendor still supports FIRE 1220 text format
- Test transmittal outputs and filing ahead of IRS filings
Know Penalty Amounts for 2026
- Penalties for incorrect Name/TIN combinations are $340 per return
- Penalties for late or corrected filings are:
| Year due | Up to 30 days late | 31 days late through August 1 | After August 1 or not filed | Intentional disregard |
| 2026 | $60 | $130 | $340 | $680 |
- Review reasonable cause criteria for penalty relief
- Bookmark the IRS penalty page for the latest updates.
Data Collection and Vendor Onboarding
- Collect valid tax forms
- Collect updated W-9s and W-8s for all vendors and payees
- Verify signatures, dates, and entity classifications
- Avoid collecting forms by email, fax, or phone to maintain audit traisl
For more information on what to look for to validate W-9 forms, read our blog.
Run Identity and Tax Validation Checks
- Run IRS TIN Matching
- Screen against OFAC
- Check the Death Master File when appropriate
- Validate postal addresses using USPS formatting rules
Confirm Reporting Requirements
Identify all forms your must file in 2026
| 1042-S | 1098-T | 1099-G | 1099-NEC | 1099-SA | 5498-SA |
| 1098 | 1099-A | 1099-INT | 1099-OID | 1099-SB | W-2G |
| 1098-C | 1099-B | 1099-K | 1099-PATR | 3921 | Others: |
| 1098-E | 1099-C | 1099-LS | 1099-Q | 3922 | Canada |
| 1098-F | 1099-CAP | 1099-LTC | 1099-R | 5498 | Quebec |
| 1098-Q | 1099-DIV | 1099-MISC | 1099-S | 5498-ESA | Puerto Rico |
Check threshold, state, and industry rules
- Review IRS instructions for each form type
- Confirm state-level reporting thresholds
- Identity states not participating in CFSF
- Track new or updated sate portals, deadlines, and form requirements.
Validate Your 1099 eFile Provider Supports Required Compliance Checks
IRS and State Validation Requirements
- Name and TIN matching validation
- Required field validation
- Data structure and format validation
- Income and withholding logic checks
- FIRE 1220 and IRIS XML validation
- Duplicate record detection
- State-specific validation rules
- Correction workflow validation
- Pre-submission error and warning reports
For more information on validation, read our eFileMyForms blog.
Conduct a Pre-Season Pilot Test
Run a November or December Pilot
- Validate your data has all required fields populated
- Confirm TIN validation results
- Test FIRE 1220 or IRS XML generation in your vendor platform
- Validate state filing formats
- Test correction workflow
- Review error logs and clean data issues early
Prepare for Recipient Statement Delivery
Ensure You Can Meet Delivery Requirements
- Validate addresses using USPS formatting rules
- Confirm ZIP and state combinations
- Prepare print and mail schedules
- Prepare a self-service portal or reprint process
- Add tracking or IMB barcodes if printing and mailing
Strengthen Your Audit Defense and Documentation
Maintain Detailed Compliance Records
- Store all W-9s and W-8 forms electronically
- Maintain TIN matching logs
- Save validation reports and error logs
- Document filing timestamps and acknowledgements
- Keep proof of statement delivery
- Maintain correction history
These records help support penalty abatement if neeed
Build Your Internal 2026 Filing Timeline
September to October
- Refresh W-9 and W-8 forms
- Update vendor and payee records
- Begin TIN matching
- Validate system readiness
November to December
- Run pilot tests
- Validate IRIS XML outputs
- Finalize print and eDelivery processes
- Resolve data exceptions
January Filing Season
- File early to avoid peak congestion
- Deliver recipient statements by the deadline
- Process corrections immediately
Looking to streamline your 1099 filing? Start your free trial of 1099Pro Cloud today!