The IRS is officially accelerating its compliance timeline. Letter 5699 notices for the 2024 tax year are being delivered to HR and compliance desks across the country. While receiving a communication from the IRS requires immediate attention, Letter 5699 is not an actual penalty. It’s a preliminary warning.
How an organization responds during the initial 30-day window dictates the final outcome. It determines whether this inquiry is resolved quickly or spirals into a severe penalty based on inaccurate IRS assumptions.
Why Did My Organization Receive IRS Letter 5699?
IRS Letter 5699, formally titled “Missing Information Return Form 1094/1095-C,” is dispatched when the IRS suspects an applicable large employer (ALE) has failed to file their required ACA returns. The IRS identifies targets by cross-referencing an employer’s W-2 filings with its internal ACA database.
If the automated system detects W-2s filed under an employer’s Federal Employer Identification Number (FEIN) but cannot locate corresponding 1094-C and 1095-C filings via the IRS AIRS System, it triggers the letter.
Employers are given a strict 30-day window to respond and clarify their filing status. Ignoring the letter is interpreted by the IRS as an admission of non-compliance, pushing the organization directly into the penalty assessment phase.
How Does the IRS Calculate Potential ACA Penalties?
When the IRS issues a Letter 5699 and estimates your potential penalty exposure, they base their calculations entirely on your total W-2 count. This creates a significant data discrepancy regarding your actual full-time headcount.
Total headcount does not equal your actual ACA full-time liability. For example, an organization might file 300 W-2s for a given tax year, leading the IRS to assume they employed 300 full-time employees. In reality, 250 of those workers might be variable-hour, PRN, or part-time staff who legally do not trigger the Employer Mandate.
Because the IRS assumes a worst-case liability based on raw W-2 data, its proposed assessments are often significantly higher than what the organization actually owes.
What Happens If You Ignore an IRS Letter 5699 Notice?
Failing to gather the necessary data and respond to Letter 5699 promptly guarantees a financial assessment. The burden of proof is entirely on the employer to interrupt this automated sequence.
If an Applicable Large Employer (ALE) fails to respond to an initial Letter 5699 inquiry, the IRS automated system initiates a strict penalty escalation timeline:
- Letter 5699: The initial 30-day inquiry regarding missing returns.
- Letter 5005-A: The proposed penalty assessment for failure to file/furnish under IRC 6721/6722.
- Letter 972CG: The formal penalty bill and demand for payment.
- Notice of Intent to Levy: The final collection stage, resulting in asset seizure.
How Do You Defend Against Inaccurate IRS Assumptions?
Responding to an escalating IRS notice requires more than checking a box or stating that you do not have that many full-time employees. You must reconstruct your historical workforce data to prove it.
Defending against an inflated assessment requires three pillars of proof:
- Time and Attendance Data: You must pull historical logs to definitively separate part-time and variable-hour staff from your full-time count.
- Measurement Period Analysis: You must provide documented Look-Back measurement periods to prove that variable-hour workers were correctly classified.
- Benefits Offer Substantiation: You must prove that the actual full-time equivalent (FTE) employees were offered compliant, affordable coverage.
Using this exact forensic data approach, Trusaic helped an organization facing a severe IRS assessment. By systematically analyzing their historical data, we proved their true FTE count was only 50 to 60 employees — despite having over 300 W-2s. This audit-ready defense effectively reduced a massive, escalated IRS assessment down to just 2% of the original levy amount.
How Trusaic Can Help You Build a Proactive ACA Solution
Responding to the IRS requires an audit-ready data defense. To protect your organization from inflated penalty assessments, you need a single source of truth that synchronizes your HR, payroll, and benefits systems.
This is precisely how Trusaic can help. Our Penalty Letter Response acts as your immediate regulatory safety net, performing the complex historical data forensics required to accurately respond to 5699 notices and mitigate your existing financial risks.
Simultaneously, our ACA Complete® platform establishes a permanent compliance infrastructure. It ensures all future Form 1094-C and 1095-C filings are mathematically validated and seamlessly transmitted through the IRS AIRS System, preventing these warning letters from being triggered in the first place.
Do not wait for a preliminary warning to become a formal levy. Contact Trusaic today to verify your liability, consolidate your data, and build your defense.
