Costco is known for offering a range of member services beyond warehouse shopping, including insurance-related programs. In 2026, health insurance is among the services connected with Costco membership through the CBC Health Insurance Marketplace for Costco Members. One area that can attract attention is HSA-eligible health insurance.
Costco's health insurance program is connected to the CBC Health Insurance Marketplace for Costco Members.
The program primarily focuses on business health insurance. Costco states that the marketplace helps businesses compare and manage group health insurance plans and related benefits.
The marketplace can connect employers with health insurance carriers and provide services involving medical and ancillary coverage. Ancillary benefits can include areas such as dental, vision, life and disability coverage.
Costco itself does not underwrite the health insurance policies or pay medical claims. The insurance products are provided through third-party insurers and health maintenance organizations, with CBC Benefit & Insurance Services handling brokerage and servicing for plans on the marketplace.
This distinction is important because the name Costco does not mean that Costco is the insurance carrier.
Some health insurance plans can be structured to work with an HSA, but HSA eligibility is determined by the characteristics of the specific health plan.
An HSA generally must be paired with a qualifying High Deductible Health Plan (HDHP).
The IRS establishes requirements that a plan must meet to qualify as an HDHP for HSA purposes.
For 2026, an HSA-qualified HDHP must have a minimum annual deductible of:
The plan also must stay within the applicable annual out-of-pocket maximums.
For 2026, the maximum annual deductible and other out-of-pocket expenses are:
These figures are IRS requirements for determining whether a health plan can meet the HDHP definition.
Therefore, a Costco marketplace plan should be evaluated based on its actual plan documents rather than simply assuming that a high deductible makes it HSA eligible.
A Health Savings Account is a tax-advantaged account designed for qualified medical expenses.
When the eligibility requirements are met, contributions can provide tax benefits. Employer contributions can also receive favorable tax treatment under applicable rules.
Money remaining in an HSA generally stays in the account rather than expiring at the end of the plan year.
The IRS also describes HSAs as portable accounts. The account can generally remain with the account holder after changing employers or leaving the workforce.
Qualified medical expenses can generally be paid using HSA funds without federal income tax on the distribution.
HSA funds can therefore serve as a way to set aside money for current medical expenses while potentially building a balance for future healthcare costs.
The amount that can be contributed to an HSA is separate from the deductible requirement.
For 2026, the IRS contribution limits are:
| Coverage type | 2026 HSA contribution limit |
|---|---|
| Self-only HDHP | $4,400 |
| Family HDHP | $8,750 |
| Additional contribution for age 55+ | $1,000 |
The $1,000 additional contribution is generally referred to as a catch-up contribution.
For married couples, each eligible spouse who qualifies for the catch-up contribution generally needs a separate HSA for that additional contribution.
Employer contributions count toward the applicable annual HSA contribution limit.
This means an employee should consider both employee and employer contributions when calculating the annual amount that can be contributed.
An HSA-compatible health plan can have financial advantages, but the structure also requires consideration of medical expenses before the deductible is reached.
A higher deductible generally means that more covered healthcare expenses may be paid out of pocket before the plan begins paying according to its regular cost-sharing structure.
For example, a plan could have a lower monthly premium but a higher deductible than another plan.
The comparison should therefore consider more than the monthly premium.
Important figures include:
The overall financial impact depends on how much healthcare is used during the year.
An HSA can provide several tax-related advantages.
According to IRS guidance, eligible HSA contributions can generally be deductible or excluded from income depending on how the contributions are made.
HSA earnings can also receive tax-favored treatment, and distributions used for qualified medical expenses can generally be tax-free.
The account is also portable.
These features can make an HSA particularly relevant for individuals who want to set aside funds specifically for healthcare expenses.
However, HSA eligibility is not simply determined by having a Costco membership or selecting a plan with a high deductible.
The underlying health plan must satisfy the applicable federal requirements.
A Costco membership by itself does not make someone eligible to contribute to an HSA.
HSA eligibility depends on federal requirements and the individual's insurance circumstances.
For example, IRS rules generally require an eligible individual to be covered by an HDHP and prohibit certain forms of additional health coverage.
An individual generally cannot contribute to an HSA while enrolled in Medicare.
A person also generally cannot contribute to an HSA if another taxpayer can claim that person as a dependent.
Consequently, HSA eligibility involves both the insurance plan and the individual's circumstances.
Costco's current health insurance marketplace is particularly relevant to employers.
The CBC Health Insurance Marketplace for Costco Members serves businesses seeking group health insurance arrangements.
Costco describes services for small businesses with fewer than 50 employees, or fewer than 100 depending on the state, as well as programs for larger businesses and enterprise employers.
The marketplace can provide access to plans from medical insurance carriers and can include ancillary benefits.
For employers considering an HSA-compatible health plan, the important question is whether a specific group plan meets the federal requirements for HSA eligibility.
The employer should review the plan documents and confirm the HSA status with the insurance administrator or benefits provider.
An employer can structure benefits around a qualifying HDHP and HSA.
In such a structure, an employee may receive a health plan with a higher deductible combined with an HSA.
The employer may also contribute money to the employee's HSA.
Employer contributions can form part of the overall compensation and benefits package while helping employees cover qualified medical expenses.
The precise structure depends on the employer, insurer, plan design, and applicable federal and state rules.
For this reason, two employers using health insurance services through the same marketplace could have different plan structures.
One of the central considerations when evaluating an HSA-compatible plan is the relationship between premiums and out-of-pocket costs.
A plan with a higher deductible can sometimes have a lower premium than a plan with a lower deductible, although pricing varies significantly.
A household with relatively low healthcare spending may place greater emphasis on premiums and HSA contributions.
A household expecting substantial medical treatment may place greater emphasis on deductible, coinsurance, prescription costs, and the out-of-pocket maximum.
Neither structure automatically produces the lowest annual cost.
A useful comparison involves calculating potential spending under several healthcare-use scenarios.
Consider two hypothetical plans.
Plan A
Plan B
At first glance, Plan B might appear more attractive because of the lower deductible.
However, Plan A could have a lower annual premium and an employer HSA contribution.
On the other hand, someone with frequent medical appointments, expensive prescriptions, or planned procedures could experience higher upfront costs under Plan A.
The relevant comparison is therefore the total annual financial exposure rather than one number.
HSA funds can generally be used for qualified medical expenses under IRS rules.
Examples can include certain:
The specific tax treatment depends on whether an expense meets IRS requirements.
Keeping receipts and maintaining appropriate records can be important, particularly when HSA distributions are used for qualified expenses.
An HSA has special tax rules.
Using HSA money for non-qualified expenses can result in taxes and, in some circumstances, an additional tax.
For this reason, HSA funds should not be treated as ordinary spending money.
The account is specifically structured around qualified healthcare expenses and federal tax rules.
The HSA administrator may provide additional information about account administration, but federal tax requirements ultimately determine whether a distribution qualifies for favorable treatment.
Medicare enrollment is particularly important for older adults considering an HSA.
The IRS states that beginning with the first month of Medicare enrollment, the HSA contribution limit becomes zero.
This means that an individual who moves onto Medicare generally cannot continue making HSA contributions for the period of Medicare enrollment.
Existing HSA funds can generally remain in the account and can continue to be used for eligible expenses.
This distinction between contributing to an HSA and using existing HSA funds is important for people approaching Medicare eligibility.
High-deductible health plans can still provide preventive care benefits under applicable federal rules.
Certain preventive services can receive special treatment even before the deductible is met.
Federal rules also provide specific treatment for certain chronic-condition preventive services under applicable circumstances.
The exact preventive services covered by a plan should be reviewed in the plan's benefit documents.
A high deductible does not necessarily mean that every medical service must be paid entirely out of pocket until the deductible is reached.
Several details should be reviewed before selecting any health insurance plan connected with a Costco marketplace.
The plan documentation should specifically indicate whether the plan is HSA eligible.
Do not assume that every HDHP-style plan automatically qualifies.
Compare the deductible against the applicable IRS minimum for the relevant year.
For 2026, the minimum is $1,700 for self-only coverage and $3,400 for family coverage.
The maximum can have a major impact during a year involving significant healthcare expenses.
For 2026, the applicable HDHP limit is $8,500 for self-only coverage and $17,000 for family coverage.
An employer HSA contribution can significantly affect the overall value of an HSA-compatible benefits package.
Employer contributions also count toward the annual HSA contribution limit.
A lower premium does not necessarily compensate for a narrow provider network if preferred doctors or hospitals are outside the network.
Prescription drug costs can vary significantly between plans.
Formularies, deductibles, coinsurance, copayments, and pharmacy networks should all be reviewed.
Check which preventive services are covered and how the plan handles them before the deductible.
Medical needs can change the financial outcome considerably.
A plan with a lower premium may not produce the lowest total cost when substantial healthcare services are expected.
Another important distinction concerns the role of Costco itself.
Costco states that its insurance services are provided through third parties.
For the CBC Health Insurance Marketplace, health insurance plans are offered by licensed insurance companies or health maintenance organizations.
Costco Insurance Agency acts as an insurance agent in the applicable program rather than serving as the insurer that pays medical claims.
This means plan terms, premiums, deductibles, provider networks, and coverage rules depend on the individual insurance carrier and plan.
An HSA-compatible plan is not automatically suitable for every household.
The structure can be useful for people who want to combine a qualifying HDHP with tax-advantaged healthcare savings.
However, a higher deductible can create greater upfront medical expenses.
People with frequent healthcare needs may need to pay particular attention to the deductible, coinsurance, prescription costs, and out-of-pocket maximum.
People with relatively low medical spending may place more emphasis on premium costs and HSA contributions.
The appropriate decision depends on individual healthcare usage, household finances, employer contributions, and the details of the specific plan.
Costco provides access to insurance services through third-party providers and its Costco member programs. The CBC Health Insurance Marketplace for Costco Members is a business health insurance marketplace rather than a single Costco-underwritten insurance policy.
HSA eligibility depends on the specific health plan. A qualifying HDHP must meet IRS requirements. Costco membership alone does not establish HSA eligibility.
For 2026, the contribution limit is $4,400 for self-only HDHP coverage and $8,750 for family HDHP coverage. Eligible individuals age 55 or older can generally make an additional $1,000 catch-up contribution.
The 2026 minimum annual deductible is $1,700 for self-only coverage and $3,400 for family coverage.
Generally, no. The IRS states that HSA contribution eligibility ends beginning with the first month of Medicare enrollment.
Existing HSA funds generally remain in the account and can continue to be used for qualified medical expenses, subject to applicable rules.
No. An HSA is a separate tax-advantaged account that must meet federal eligibility requirements.