In benefits administration, the terms “plan year” and “calendar year” are often used interchangeably, but they are not the same. Understanding the difference is important for managing enrollment, eligibility, billing, and compliance responsibilities.
What Is a Calendar Year?
A calendar year runs from January 1 through December 31. Many reporting requirements, including Affordable Care Act (ACA) reporting and certain tax-related deadlines, are based on the calendar year.
Because of this, HR and payroll teams often default to thinking in calendar-year terms when reviewing employee data and compliance obligations.
What Is a Plan Year?
A plan year is the 12-month period during which a benefit plan operates. While many employers align their plan year with the calendar year, others choose a different cycle, such as July 1 through June 30.
The plan year governs key aspects of benefits administration, including:
Why the Difference Matters
When the plan year and calendar year do not align, it introduces complexity into administration and reporting.
For example, benefit elections may change at the start of a new plan year, but ACA reporting still requires tracking employee status and coverage on a calendar-year basis. This means employers must manage two timelines at once.
Similarly, payroll deductions and billing may reflect plan year changes, while compliance reporting follows calendar-year requirements. Without careful coordination, this can lead to discrepancies.
Impact on Enrollment and Eligibility
Open enrollment typically occurs shortly before the start of the plan year. Employees make elections that will apply for the upcoming plan year, even though the current calendar year may still be in progress.
Eligibility tracking must also align with plan year rules. Waiting periods, effective dates, and coverage changes are tied to the plan year, not the calendar year, which can create confusion if not communicated clearly.
Impact on Financial Tracking
Plan year timing affects how contributions and expenses are tracked. For example, many FSA elections are based on the plan year, and funds are available and used within that timeframe, subject to any grace period or runout provisions.
When plan years differ from the calendar year, employers must ensure that payroll deductions, billing, and reporting are aligned with the correct period.
Compliance Considerations
Many compliance requirements operate on a calendar-year basis, even when the plan year differs. This includes ACA reporting and certain tax-related obligations.
As a result, employers must maintain accurate records that reflect both plan year activity and calendar-year reporting requirements. Misalignment between the two can lead to reporting errors or compliance concerns.
Best Practices for Employers
Employers can reduce confusion and improve accuracy by clearly defining their plan year and ensuring that all related processes align with that structure. This includes coordinating enrollment timing, payroll deductions, and billing cycles.
It is also important to communicate plan year timing to employees so they understand when elections take effect and when changes can be made.
Regular review of data across HR, payroll, and benefits processes can help ensure consistency between plan year administration and calendar-year reporting.
Supporting Consistent Administration
Managing plan year and calendar year differences requires coordination and clear processes. When systems and teams are aligned, employers can avoid common issues and maintain accurate records.
BAS supports employers by providing structured processes for managing enrollment, billing, and benefits data across plan years and reporting periods. If you have questions about aligning your plan year with your administrative processes, please contact BAS at solutions@basusa.com or 1-888-945-5513.
Benefit Allocation Systems (BAS) provides best-in-class, online solutions for: Employee Benefits Enrollment; COBRA; Flexible Spending Accounts (FSAs); Health Reimbursement Accounts (HRAs); Leave of Absence Premium Billing (LOA); Affordable Care Act Record Keeping, Compliance & IRS Reporting (ACA); Group Insurance Premium Billing; Property & Casualty Premium Billing; and Payroll Integration.
MyEnroll360 can integrate with any insurance carrier for enrollment eligibility management (e.g., Blue Cross, Blue Shield, Aetna, United Health Care, Kaiser, CIGNA and many others), and integrate with any payroll system for enrollment deduction management (e.g., Workday, ADP, Paylocity, PayCor, UKG, and many others).
This article is for informational purposes only and is not intended as legal, tax, or benefits advice. Readers should not rely on this information for taking (or not taking) any action relating to employment, compliance, or benefits. Always consult with a qualified professional before making decisions based on this content.