HMRC Admits Systemic Issues with RTI Duplicate Employment Records
HMRC's October 2026 guidance acknowledges that millions of duplicate employment records have been created since the introduction of Real Time Information (RTI) in April 2013, a problem that employers cannot resolve independently. These duplicates trigger unnecessary debt collection activities and incorrect tax contributions, requiring direct HMRC intervention.
Key takeaways
- HMRC has acknowledged the existence of millions of duplicate employment records since the introduction of RTI in April 2013.
- These duplicates trigger unnecessary debt collection activities, generate incorrect tax contributions, and affect Universal Credit amounts for affected workers.
- Employers cannot resolve duplicate records or incorrect data linkage by submitting new FPS records; they must request HMRC correction via the online form 'Get help to correct an employer PAYE bill.'
- Common RTI submission errors include incorrect starter checklist entries, seasonal workers reported as new starters, and incorrect National Insurance numbers.
Context
The Real Time Information (RTI) system, introduced in April 2013, was designed to modernize the UK's payroll reporting process by requiring employers to submit detailed employee data with each payroll run. However, HMRC's October 2026 guidance reveals a systemic issue: the creation of millions of duplicate employment records since RTI's inception. This problem stems from various submission errors, including incorrect starter checklist entries, seasonal workers being reported as new starters upon their return, and incorrect National Insurance numbers. These duplicates have significant downstream consequences, such as triggering unnecessary debt collection activities, generating incorrect employee tax and National Insurance contributions, and producing incorrect Universal Credit amounts for affected workers.
What's Changing
HMRC's updated guidance clarifies that employers cannot resolve duplicate records or incorrect data linkage by submitting new Full Payment Submission (FPS) records. The only available remedy is to request HMRC correction via the online form titled 'Get help to correct an employer PAYE bill.' This admission highlights a critical limitation in the RTI system: employers lack the ability to self-correct certain types of errors. HMRC will generally pause debt recovery activity while investigating a disputed PAYE amount, though this is characterized as usual practice rather than a guaranteed right. The guidance also identifies common RTI submission errors that drive these mismatches, such as date formatting errors and payroll ID changes submitted without the appropriate change markers.
Implications for Employers
For UK employers, this guidance underscores the importance of meticulous payroll data management and timely error reporting. Employers must ensure accurate completion of starter checklists, correct reporting of seasonal workers, and verification of National Insurance numbers to prevent duplicate records. Additionally, employers should promptly report any payroll ID changes using the appropriate markers and maintain consistent date formatting in submissions. Given that HMRC is the sole entity capable of correcting duplicate records, employers facing such issues must utilize the 'Get help to correct an employer PAYE bill' form and provide comprehensive details to facilitate HMRC's investigation.
Outlook
The RTI submission framework itself remains unchanged as of 24 October 2026. However, this guidance is relevant to any EU, African, or Americas jurisdiction monitoring the UK's real-time payroll reporting model as a reference architecture. The systemic data quality risks highlighted by HMRC serve as a cautionary tale for other jurisdictions considering similar real-time reporting systems. The absence of employer-side self-correction mechanisms in the RTI system underscores the need for robust government-held employment record management and clear correction procedures.
Frequently asked questions
- What causes duplicate employment records in the RTI system?
- Duplicate employment records are primarily caused by incorrect starter checklist entries, seasonal workers being reported as new starters upon their return, and incorrect National Insurance numbers.
- Can employers fix duplicate records or incorrect data linkage by submitting new FPS records?
- No, employers cannot resolve these issues independently. They must request HMRC correction via the online form 'Get help to correct an employer PAYE bill.'
- What are the consequences of duplicate employment records?
- Duplicate records trigger unnecessary debt collection activities, generate incorrect employee tax and National Insurance contributions, and produce incorrect Universal Credit amounts for affected workers.
- Will HMRC pause debt recovery activity while investigating a disputed PAYE amount?
- HMRC will generally pause debt recovery activity during the investigation, though this is characterized as usual practice rather than a guaranteed right.
- What should employers do to prevent RTI submission errors?
- Employers should ensure accurate completion of starter checklists, correct reporting of seasonal workers, verification of National Insurance numbers, prompt reporting of payroll ID changes with appropriate markers, and consistent date formatting in submissions.