What is mental health parity (MHPAEA)?

June 16, 2026June 16, 2026

Short answer: The Mental Health Parity and Addiction Equity Act requires group health plans that cover mental health and substance-use treatment to do so on terms no more restrictive than for medical and surgical care, including copays, visit limits, and prior-authorization rules.

MHPAEA doesn’t force a plan to cover mental health or substance-use disorder (MH/SUD) treatment, but if it does (and most must), it has to apply comparable terms. That means the financial requirements (copays, deductibles), quantitative limits (like visit caps), and non-quantitative limits (prior authorization, medical-necessity criteria, network adequacy) for MH/SUD can be no more restrictive than those applied to medical/surgical benefits.

The Consolidated Appropriations Act, 2021 added a requirement that plans perform and document a comparative analysis of their non-quantitative treatment limitations on request. (Some newer 2024 rule provisions are under a regulatory pause, but the core parity requirement and the CAA analysis remain in force.)

Sources

Mental Health Parity and Addiction Equity Act; Consolidated Appropriations Act, 2021; Employee Benefits KB (Compliance, MHPAEA).

Content history
Originally published: June 16, 2026
Last reviewed: June 16, 2026

Compliance Plans & Coverage Mental Health Parity

About Effective Date Rules

Your coverage effective date depends on the plan's rules and any waiting period. These FAQs explain when coverage starts after you enroll.

About Waivers and Declinations

Employees who turn down the employer's coverage should sign a waiver documenting the choice. These FAQs explain how waivers and declinations work and how they affect future enrollment.

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Minimum essential coverage (MEC) and minimum value (MV) are two different ACA standards employers must meet. These FAQs explain the difference and why it matters.

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About MPRAs

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About ICHRAs

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About QSEHRAs

A Qualified Small Employer HRA (QSEHRA) lets small employers without a group plan reimburse employees for individual coverage. These FAQs explain QSEHRA rules and limits.

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About Level-Funding

A level-funded plan is a form of self-funding packaged to feel like a fully insured plan, with a fixed monthly cost and a possible year-end refund. These FAQs explain how it works.

About Self-Funding

In a self-funded plan the employer pays employees' claims directly, usually with stop-loss protection. These FAQs explain how self-funding works and when it fits.

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About EPOs

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Dental plans are structured differently from medical coverage, with tiered benefits and annual maximums. These FAQs explain how dental insurance works and what to watch for.

About Vision Insurance

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About Employer Contributions

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About Waiting Periods

A waiting period is the time duration employees must wait before their coverage becomes effective. Under the ACA, the maximum new-hire waiting period is 90 days from the date of full-time employment. However, small employers might be able to add a one-month orientaion period or a cumulative hours requirement prior to the beginning of the waiting period. And companies with variable-hour employees can impose a one-year initial measurement period during which time they determine full- or part-time employee status.

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About Captives & MEWAs

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About Cost Containment

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About Participation

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About Mental Health Parity

The Mental Health Parity and Addiction Equity Act requires comparable coverage for mental health and substance-use care. These FAQs explain what parity means and what it requires.

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About State Continuation

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About COBRA

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About SBCs

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About DCAs

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About ERISA

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About Part-Timers

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About ALEs

An Applicable Large Employer (ALE) is generally one with 50 or more full-time-equivalent employees, which makes it subject to the ACA employer mandate. These FAQs explain how ALE status is determined and what it requires.

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About Safe Harbors

ACA affordability safe harbors let employers measure affordability against W-2 wages, rate of pay, or the federal poverty line. These FAQs explain each safe harbor.

About POPs

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About FSAs

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About HRAs

Health Reimbursement Arrangements (HRAs) are employer-funded accounts that reimburse employees for eligible healthcare expenses. Explore these FAQs to learn how HRAs work, what expenses can be reimbursed, how they differ from FSAs and HSAs, and how plan design affects flexibility and rollover options.

About MERPs

Medical Expense Reimbursement Plans (MERPs) are a type of Health Reimbursement Arrangement (HRA) that allow employers to self-fund a portion of employees’ out-of-pocket medical costs, often to offset high deductibles. These FAQs explain how MERPs work, when to use them, and how they can be paired with traditional or high-deductible group health plans.

About Dependents and Domestic Partners

Who counts as an eligible dependent affects enrollment and coverage. These FAQs explain dependent eligibility, domestic partners, and related enrollment rules.