The Ultimate HR Benefits Compliance Calendar (ACA, COBRA, ERISA Deadlines)
Updated: 3 days ago
Why a Benefits Compliance Calendar Matters
Benefits compliance is one of the most overlooked responsibilities for HR teams—especially at companies under 200 employees. Missing a deadline can lead to significant penalties, employee lawsuits, and IRS fines.
A clear benefits compliance calendar helps HR teams stay organized, reduce risk, and avoid costly mistakes. This guide breaks down the key monthly, quarterly, and annual benefits compliance deadlines every employer should track.
Monthly Benefits Compliance Deadlines
COBRA Premium Payments
Employers or plan administrators must track COBRA premium payments monthly.
Grace periods typically last 30 days, but coverage can be terminated for non-payment.
Benefits Deductions & Payroll Reconciliation
Ensure employee benefits deductions match carrier invoices.
Correct discrepancies promptly to avoid coverage gaps.
Quarterly Benefits Compliance Deadlines
ACA Employer Shared Responsibility Tracking
Track full-time employee hours to determine Applicable Large Employer (ALE) status (50+ full-time equivalents).
Monitor affordability and minimum value compliance for group health plans.
Benefits Plan Review & Compliance Check
Review plan documents, Summary Plan Descriptions (SPDs), and employee communications for accuracy.
Confirm that employee contributions align with plan documents.
Annual Benefits Compliance Deadlines
IRS Forms 1094-C and 1095-C (ACA Reporting)
Due to employees by March 2 each year (the January 31 date extends automatically).
Filed with the IRS by late February (paper) or late March (electronic).
Summary of Benefits and Coverage (SBC) Updates
Provide updated SBCs during open enrollment or when plans change.
Form 5500 (ERISA Reporting)
Due by the last day of the 7th month after the plan year ends (with extensions available). Fully insured or unfunded welfare plans with fewer than 100 participants at the start of the plan year are generally exempt.
Nondiscrimination Testing
Required for certain self-funded plans and benefits programs.
COBRA General Notice Distribution
Must be provided to new hires and covered spouses within 90 days of coverage start.
Penalties for Missing Benefits Compliance Deadlines
Missing benefits compliance requirements can result in:
IRS penalties for ACA reporting errors
Department of Labor fines for ERISA violations
COBRA penalties for late or missing notices
Employee lawsuits and class-action claims
Penalties can range from hundreds to thousands of dollars per employee.
Automation Tools That Simplify Benefits Compliance
Benefits Administration Platforms
Automate enrollments and life event changes
Generate compliance reports and documentation
Integrate with payroll and HRIS systems
Compliance Tracking Software
Track ACA eligibility and affordability
Store plan documents and disclosures
Send automated reminders for deadlines
Getting Help With Benefits Compliance
Many companies under 200 employees get outside help with some of these tasks, from payroll providers, tax advisors, attorneys, and benefits administrators.
Common outsourced tasks include:
ACA reporting and tracking (often through a payroll provider or tax advisor)
COBRA administration
ERISA plan documents and Form 5500 preparation (often through an attorney or plan document provider)
Open enrollment materials and notices
Getting the right help lets HR teams focus on people strategy while specialists handle the regulatory details.
Staying compliant doesn’t have to be overwhelming.
Service 1st Benefits helps companies with COBRA administration, enrollment, and carrier communication. For ACA reporting, ERISA, and other legal questions, check with your tax advisor or employment attorney.




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