Actuarial Value Requirements by Metal Tier

Actuarial value (AV) is the numerical standard that determines how Affordable Care Act marketplace plans are classified into metal tiers — Bronze, Silver, Gold, and Platinum. The AV percentage tells consumers what share of covered medical expenses a plan is expected to pay for a standard population of enrollees. Understanding AV requirements is essential to evaluating plan design, cost-sharing structures, and eligibility for cost-sharing reductions under federal rules.

Definition and scope

Actuarial value, as defined by the Department of Health and Human Services (HHS) under the ACA framework, represents the percentage of total average costs for covered benefits that a plan will pay for a standard population (45 CFR § 156.140). A plan with a 70% AV is expected to cover 70 cents of every dollar of covered medical spending on average across enrollees, leaving the remaining 30% as member cost-sharing through deductibles, copayments, and coinsurance.

AV is not a per-member guarantee. Any individual enrollee may face costs above or below the AV benchmark depending on their specific utilization. The metric applies to a standardized population model, not to individual claims experience.

The scope of AV calculation is limited to covered benefits under a plan's essential health benefits. Costs outside covered benefits — such as non-covered services or out-of-network charges beyond plan limits — are excluded from the AV computation.

How it works

HHS requires issuers to use the HHS-developed AV Calculator to determine whether a plan meets the AV threshold for its intended metal tier (CMS AV Calculator, 45 CFR § 156.135). The calculator uses a fixed dataset representing the spending distribution of a nationally representative sample of enrollees. Plan design variables — deductibles, out-of-pocket maximums, copay amounts, coinsurance rates — are entered into the calculator, which produces an AV percentage.

Federal regulations permit a de minimis variation of +/- 2 percentage points around each metal tier's target AV. Beginning with plan year 2023, the de minimis range for Bronze plans was adjusted to -4/+2 percentage points under rulemaking by HHS, allowing greater plan design flexibility at the lower end (45 CFR § 156.140(c)).

The four metal tiers and their AV targets are:

Bronze — 60% AV (acceptable range: 56%–62%)
Silver — 70% AV (acceptable range: 68%–72%)
Gold — 80% AV (acceptable range: 78%–82%)
Platinum — 90% AV (acceptable range: 88%–92%)

A fifth category — catastrophic plans — is available only to enrollees under age 30 or those with hardship/affordability exemptions. Catastrophic plans are not assigned a metal tier and are not subject to the standard AV targets, though they must cover three primary care visits per year before the deductible (45 CFR § 156.155).

Common scenarios

Cost-sharing reduction (CSR) Silver plan variants represent the most structurally significant AV scenario in marketplace plan design. Silver plans are the only tier eligible for CSR subsidies under ACA Section 1402. When applied, CSRs raise a Silver plan's effective AV to 73%, 87%, or 94% depending on the enrollee's household income relative to the federal poverty level (FPL):

100%–150% FPL: Silver plan AV adjusted to 94%
150%–200% FPL: Silver plan AV adjusted to 87%
200%–250% FPL: Silver plan AV adjusted to 73%

(CMS, Cost-Sharing Reductions, 45 CFR § 156.420)

These CSR variants are separate plan variants that issuers must file in addition to the standard Silver plan. Issuers must offer CSR variants to enrollees who qualify; failure to do so constitutes a compliance violation.

Employer-sponsored plan minimum value is a related but distinct concept. For employer-sponsored group health plans, minimum value requirements under ACA Section 36B are set at a 60% AV threshold — matching the Bronze tier floor — but employer plans use a separate minimum value calculator or actuarial certification process administered by CMS rather than the marketplace AV Calculator.

State-mandated benefit additions can complicate AV calculations in states that require benefits beyond federal essential health benefit benchmarks. Issuers operating in those states may need to recalculate AV using a state-adjusted benchmark to avoid overstating AV relative to the federal standard.

Decision boundaries

The AV tier classification creates hard compliance thresholds. A plan submitted outside the de minimis range for its declared tier will be rejected during the certification review process conducted by HHS or the applicable state-based exchange.

Key boundary distinctions include:

Bronze vs. Catastrophic: A plan cannot simultaneously qualify as Bronze and catastrophic. Catastrophic plans have no AV target; Bronze plans must meet the 60% AV standard. Enrollment eligibility rules, not AV, separate these products.
Silver vs. Gold: A plan designed with Gold-level cost sharing that produces an AV above 82% cannot be filed as Gold — it would require redesign or reclassification. Similarly, a plan producing an AV below 68% cannot be marketed as Silver.
CSR variants vs. base plans: The 73%, 87%, and 94% CSR Silver variants are legally distinct from the 70% standard Silver plan. Issuers may not apply CSR adjustments to Bronze, Gold, or Platinum plans.

Issuers seeking to understand the broader regulatory structure governing marketplace certification should review the regulatory context for ACA, which situates AV rules within the full body of ACA implementing regulations. A broader orientation to the ACA's coverage framework and consumer protections is available at the site index.

The AV framework ultimately determines the consumer cost burden across all marketplace products. Plan architects, benefits administrators, and compliance analysts use AV targets as the foundational constraint around which all other cost-sharing design decisions are built.

References

The law belongs to the people. Georgia v. Public.Resource.Org, 590 U.S. (2020)