Most of what is in an Illinois group health proposal was decided before either issuer wrote it. Federal law fixes the factors a small-group rate may vary on. Federal law pools every non-grandfathered small-group enrollee at an issuer together. Federal law guarantees that your group can buy. Illinois law writes a long list of coverage duties into any fully-insured small-group policy sold here, and gates them all through the same scope section. None of that differs between two proposals, which means none of it is where the comparison happens. What is left — network, plan design, funding shape, and the participation and contribution conditions attached to the offer — is small enough to read carefully and is where the entire difference lives.
Start with what cannot differ
It is worth naming the fixed part explicitly, because a great deal of proposal-comparison advice spends its time there.
Rating factors. In the individual and small group market a rate may vary only on whether the coverage is for an individual or a family, the rating area, age, and tobacco use, and 45 CFR 147.102(a)(2) forbids variation on any other factor. Neither proposal can rate your group on its claims, anyone’s health, your industry, or how long you have been covered.
Rating area. Both proposals are quoting one business at one address, and federal law derives the small-group area from that address rather than from the workforce. So both land in the same Illinois area. It is not a variable in a comparison; it is a constant you cannot negotiate.
The risk pool. Under 42 U.S.C. 18032(c)(2) an issuer must treat all enrollees in all its non-grandfathered small-group health plans — including those who did not enroll through the exchange — as members of a single risk pool. Each issuer has its own pool, so this is a difference between issuers rather than a difference between two proposals from one.
Guaranteed issue. An issuer offering coverage in the small group market “must offer to any individual or employer in the State all products that are approved for sale in the applicable market, and must accept any individual or employer that applies for any of those products.” That guarantee is expressly subject to paragraphs (b) through (d) of 45 CFR 147.104, which is where the conditions discussed further down live.
The essential health benefits package. Coverage in the small group market must include it, and it is built from a fixed list of categories: ambulatory patient services; emergency services; hospitalization; maternity and newborn care; mental health and substance use disorder services, including behavioral health treatment; prescription drugs; rehabilitative and habilitative services and devices; laboratory services; preventive and wellness services and chronic disease management; and pediatric services, including oral and vision care. A plan cannot simply omit a category, and the benefits must not be unduly weighted toward any one of them.
The network is the first real difference
Once the fixed part is set aside, network is usually the largest genuine difference between two Illinois proposals, and it is the one employees feel.
The plan-type labels describe how the network gates coverage and cost, not how rich the benefits are. An HMO “usually limits coverage to care from doctors who work for or contract with the HMO” and “generally won’t cover out-of-network care except in an emergency,” and may require members to live or work in its service area. A PPO contracts with providers to build a network where “you pay less if you use providers that belong to the plan’s network,” and out-of-network care is available at an additional cost. An EPO covers services “only if you use doctors, specialists, or hospitals in the plan’s network (except in an emergency).” An HSA-eligible plan — a high deductible health plan — carries a higher deductible in exchange for a lower monthly premium and can be paired with a health savings account.
Two proposals wearing the same label are still two different networks. The label describes the gating rule; it says nothing about which providers are behind the gate. Ask for the network name and check the specific facilities and physicians your employees already use, rather than comparing labels against each other.
There is one place where network and Illinois geography interact, and federal law spells it out. The small-group rating area normally follows the group policyholder’s principal business address — but 45 CFR 147.102(a)(1)(ii)(B) provides that if, for a network plan, that address is not within the plan’s service area and the policyholder has employees who live, reside or work within it, the address used for that network plan is the business address within the service area where the greatest number of employees work as of the beginning of the plan year. Because Illinois areas follow county boundaries, a network plan whose service area stops short of your county raises a geography question before it raises a provider question.
Plan design, and what a metal label actually says
The metal tier is a compact piece of information and it is regularly over-read.
Under 45 CFR 156.140, actuarial value — calculated as the regulation describes and within a defined de minimis variation — “determines whether a health plan offers a bronze, silver, gold, or platinum level of coverage.” Actuarial value is the share of expected total covered costs the plan design is built to carry, with the balance falling to the member through cost-sharing. That is all the label encodes. It is not a quality rating, not a network measure, and not a service standard.
So two plans in the same tier can be built quite differently: one with a higher deductible and lower coinsurance, one the other way around, one with copays that shelter routine care and one that does not. Compare the actual cost-sharing structure against how your workforce uses care, not the tier name against the tier name.
Funding shape can change which rules apply at all
This is the difference that most deserves a careful read, because it can move a proposal outside the rules the rest of this page describes.
A fully-insured small-group policy has the issuer carrying claims risk, and it is subject to the small-group market’s federal requirements — the essential health benefits package, guaranteed renewability and the single risk pool. A self-funded plan has the employer carrying claims risk and paying claims from its own funds, usually contracting administration and network access to a third party administrator.
Level-funding sits between them in feel and with self-funding in law. In a 2023 proposed rule, the federal Departments described it as “a type of self-funded arrangement in which the plan sponsor makes set monthly payments to a service provider to cover estimated claims costs, administrative costs, and premiums for stop-loss insurance for claims that surpass a maximum dollar amount beyond which the plan sponsor is no longer responsible for paying claims (attachment point),” and noted that it “is increasingly utilized by small employers in particular.” A year that runs under budget may produce a refund or a surplus carried forward; a year that runs over may push the following year’s payments up.
The consequence that belongs in a proposal comparison is the one the Departments stated themselves: “In the case of a level-funded plan, if the entire arrangement is treated as self-insured, the essential health benefit requirements would not apply,” and such arrangements “are not generally treated as being subject to the guaranteed renewability and single risk pool requirements that apply to fully-insured small group market coverage.” The Departments added that small employers moving to these arrangements “may be unaware that the self-funded plans they are offering to their employees may not include certain benefits that would have to be covered if the plan were fully-insured.”
That passage is a description, not a rule: it comes from a proposed rule, and the 2024 final rule expressly declined to address level-funded arrangements. But as a description it is exactly the question to put to a level-funded proposal in Illinois — get the covered-benefit list in writing and read it against a fully-insured quote from the same round.
The conditions that sit outside the guarantee
Guaranteed issue is real and it is qualified. 45 CFR 147.104(b) contemplates a group health plan in the small group market “that cannot comply with employer contribution or group participation rules for the offering of health insurance coverage, as allowed under applicable State law,” and permits an issuer in that case to restrict availability to an annual enrollment window rather than declining outright.
The level of those requirements is not fixed federally for the whole market. 45 CFR 155.706 recognizes that a state law may set a minimum participation rate, or that a higher or lower rate may be customarily used by the majority of issuers in a state for products in that state’s small-group market. So participation and contribution terms are a genuine point of comparison between two proposals, and one worth asking about directly.
One counting rule is worth knowing before you assume you will fail a participation test: it is measured against the employees offered coverage, and employees who already hold coverage elsewhere — another group plan, government coverage, or coverage they bought themselves — count toward the requirement rather than against it.
Reading the Illinois mandate line on a benefit summary
Illinois’ mandates include requirements on anesthesia services, preventive services without cost-sharing, infertility diagnosis and treatment, biomarker testing, hearing aids, telehealth and a long run of others, and they attach to the policy. Two fully-insured Illinois small-group proposals therefore carry the same state requirements as each other.
What differs is whether a particular arrangement passes through one of the doors in 215 ILCS 5/352, the scope section for the whole Article: stop-loss insurance is exempt from most of it, excepted benefits are removed by 215 ILCS 5/352b, Medicaid and CHIP contracts are carved out, and a policy covering certificate holders who are neither residents of nor employed in Illinois need not give those nonresidents the Article’s mandated coverages.
And when a proposal document cites a section by number, check for the Public Act. Seven unrelated sections of the Illinois Insurance Code share the number 356z.80, each printed under its own Public Act, so a bare citation to that number does not identify which duty is meant. It is a small check and it is the fastest way to tell a document that was drafted from the statute from one that was drafted from a summary of it.
Which carriers you are actually comparing
Wexford’s appointments include Aetna, Anthem, Cigna, Humana and UnitedHealthcare.
That is an appointment roster, not a market survey, and an appointment is not a statement that a given carrier will write a plan for your Illinois group. What it is useful for is narrowing the comparison to the questions above: each of those proposals arrives under the same federal rating rules and the same Illinois coverage duties, so the differences between them are network, plan design, funding shape, and participation and contribution terms.
A comparison order that works
Read the network first and against your employees’ actual providers. Read the cost-sharing structure second, against how your workforce uses care, and treat the metal label as a summary of that rather than a substitute for it. Read the funding shape third, and if either proposal is level-funded, get the covered-benefit list in writing. Read the participation and contribution terms fourth. Then, and only then, compare the numbers — because until those four are settled, the numbers are describing different things.
Whichever one you choose, 820 ILCS 46/10(a) attaches the same duty to the result: an employer providing group health insurance coverage must give every employee eligible for it a written list of the covered benefits, formatted to compare against the state essential health benefits list, on hire, annually after that, and on request.
The bottom line
In the Illinois small-group market, federal rating factors, guaranteed issue, the single risk pool and the state’s coverage requirements apply to both proposals equally, so none of those is where the comparison happens. Read the network first, then plan design, then how the arrangement is funded — because a level-funded arrangement treated as self-insured may not carry benefits a fully-insured Illinois small-group policy has to carry.
Frequently asked questions
If federal law fixes the rating factors, why do two Illinois proposals quote different prices?
Because the rating factors govern how a rate may vary, not what the rate is. Both issuers apply the same closed list — individual or family coverage, rating area, age and tobacco use — but each files its own rates, builds its own provider network on its own contracted terms, and prices its own plan designs. Two proposals can therefore differ substantially while both comply with the same rule. It also means a price difference is telling you something about network and design rather than about how each issuer sized up your group.
Do Illinois coverage mandates apply to both proposals?
To fully-insured small-group policies, yes — Illinois’ mandates include requirements on anesthesia services, preventive services, infertility, biomarker testing and a long list of others, and they attach to the policy rather than to the issuer. What differs is whether a given policy passes through one of the doors in 215 ILCS 5/352, which exempts stop-loss insurance from most of the Article, removes excepted benefits, carves out Medicaid and CHIP contracts, and relieves out-of-state certificate holders. A funding shape that is not a fully-insured policy at all is the bigger variable.
What should I check on a level-funded proposal in Illinois?
Check which benefits it actually covers, in writing, against a fully-insured quote from the same shopping round. In a 2023 proposed rule the federal Departments described level-funding as a self-funded arrangement with fixed monthly payments covering estimated claims, administration and stop-loss premium, and noted that "if the entire arrangement is treated as self-insured, the essential health benefit requirements would not apply." They also observed that small employers may be unaware of that. The final rule expressly declined to address level-funding, so this is a description of how the arrangement works rather than a rule about it.
Does the metal tier tell me which proposal is better?
It tells you one specific thing. Under 45 CFR 156.140, actuarial value — the share of expected total covered costs the plan design is built to carry — is what determines whether a plan is bronze, silver, gold or platinum. It is not a quality grade, a network size or a service level. Two plans in the same tier can have very different networks and can arrange the member’s share of costs quite differently, through deductible, copay and coinsurance structures that feel nothing alike in use.
Does it matter which carrier a proposal comes from if the rules are the same?
Wexford’s appointments include Aetna, Anthem, Cigna, Humana and UnitedHealthcare. An appointment is our relationship with a market rather than a statement that a given carrier will write a plan for your Illinois group — access varies, and we do not publish per-state carrier tallies. What matters more for a comparison is that every one of those proposals arrives under the same federal rating rules, the same single risk pool and the same Illinois coverage requirements — so the questions worth asking are about network, plan design and funding shape.
About the author
Nate Jones, CPCU, is the founder of Wexford Insurance and Wexford Health Insurance, an independent agency placing small-business group benefits in 9 states. He puts two Illinois group health proposals side by side and separates the terms federal and Illinois law fix in advance from the handful of terms an issuer actually chooses. Start with the Wexford Health Insurance quote form.