US · guidance
CMS Pub. 100-18, ch. 12, § 20.12.1
Premium Subsidy
Low-Income Premium Subsidy Pass Through Requirements
PDP sponsors offering EGWPs are required to comply with the same low-income premium
subsidy amount requirements that apply to PDP sponsors offering plans to individual
Medicare beneficiaries. See 42 CFR 423.800(b). Thus, EGWP Part D sponsors are
responsible for identifying employer/union group health plan LIS Part D eligibles and passing
through the low-income premium subsidy amount payments made by CMS on behalf of these
Part D eligibles to reduce their premium contributions.
Premiums charged (to the beneficiary and/or the employer/union) for a particular “800 series”
PDP plan benefit package can vary between different employer/union group health plan
sponsors and also among a particular employer group health plan’s Part D eligibles based on
legitimate criteria such as years of service. See section 20.4 of this chapter. CMS does not
take into account these variations in premiums because CMS does not receive information on
these variations during the annual Part D bidding process. Even though premium amounts
may vary among and between employer/union group health plan enrollees as described above,
the LIS premium subsidy amounts paid by CMS to all EGWPs for all enrollees of a particular
“800 series” or Direct Contract plan benefit package do not vary.
As a condition of receiving the waivers and modifications described above, CMS requires that
all PDP sponsors offering EGWPs ensure that any low-income premium subsidy amount paid
on behalf of an LIS beneficiary accrues first to the benefit of the LIS-eligible employer/union
group health plan Part D eligible. Specifically, the low-income premium subsidy must first be
used to reduce any portion of the monthly beneficiary premium paid by the Part D eligible (or
in those instances where the subscriber to or participant in the employer/union plan pays
premiums on behalf of a low-income eligible spouse or dependent, the amount the subscriber
or participant pays), with any remaining portion of the premium subsidy amount then applied
toward the portion of any monthly premium paid for by the employer/union. However, if the
sum of the enrollee’s monthly premium (or the subscriber’s/participant’s monthly premium, if
applicable) and the employer/union sponsor’s monthly premiums (i.e., total monthly
premium) is less than the monthly low-income premium subsidy amount, any portion of the
low-income premium subsidy amount above the total monthly premium must be returned
directly to CMS.
Similarly, if there is no monthly premium charged to the beneficiary (or
subscriber/participant, if applicable) or employer/union, the entire low-income premium
subsidy amount must be returned directly to CMS and cannot be retained by the PDP sponsor,
the employer/union, or the employer/union group Part D eligible (or the
subscriber/participant, if applicable). If low-income premium subsidy amounts need to be
returned to CMS for any employer/union group sponsor enrollees that meet the above criteria,
PDP sponsors are required to immediately contact their CMS account manager for
instructions on how to return these amounts.
As stated in section 10.5, PDP sponsors may enter into reinsurance or administrative services
arrangements with self-insured (i.e., self-funded) employers/unions. Therefore, instead of
paying an insurance premium to the PDP sponsor, the employer/union group typically pays an
administrative fee to the PDP sponsor. In these kinds of arrangements, in order to properly
administer the low-income premium subsidy requirements outlined above, the PDP sponsor
must develop an “illustrative premium.” The “illustrative premium” is equal to the premium
the employer/union group plan sponsor would have paid if they had purchased an equivalent
product offered by the PDP sponsor. The same rules outlined above would be applied using
the illustrative premium in the place of actual premium. The PDP sponsor will be required to
develop and apply an “illustrative premium” for each self-insured or self-funded
employer/union group plan sponsor.
Note that if the low-income premium subsidy amount for which an enrollee is eligible is less
than the portion of the monthly beneficiary premium paid by the Part D eligible (or
subscriber/participant, if applicable), then the employer/union should communicate to the Part
D eligible (or subscriber/participant) the financial consequences of the low-income subsidy
eligible individual enrolling in the employer/union sponsored group health plan as compared
to enrolling in another PDP with a monthly beneficiary premium equal to or below the low-income premium subsidy amount.
Ability to Refund Low-Income Premium Subsidy Amounts
In accordance with 42 CFR 423.800, where the PDP sponsor offering the EGWP directly bills
the employer/union sponsor’s Part D eligibles for their premium contributions, the Part D
sponsor is required to reduce up-front the premiums charged to reflect the low-income
premium subsidy payments paid to the PDP sponsor by CMS on behalf of these individuals.
If, however, the PDP sponsor does not or cannot directly bill an employer/union group health
plan’s Part D eligibles, CMS will waive this up-front reduction requirement and permit the
PDP sponsor to directly refund the amount of the low-income premium subsidy to the LIS
beneficiary. This refund must meet the above requirements concerning beneficiary premium
contributions; specifically, that the amount of the refund not exceed the amount of the
monthly premium contribution by the Part D eligible (or subscriber/participant, if applicable)
and/or the employer/union sponsor. In addition, the PDP sponsor must refund these amounts
to the beneficiary within a reasonable time period. However, under no circumstances may
this time period exceed 45 days from the date that the PDP sponsor receives from CMS the
low-income premium subsidy amount payment for the low-income subsidy eligible enrollee.
Alternatively, the PDP sponsor and the employer/union may agree that the employer/union
will be responsible for reducing up-front the premium contribution required for its Part D
eligibles that are eligible for the Low-Income Subsidy. In those instances where the
employer/union is not able to reduce up-front the premiums paid by the enrollee (or
subscriber/participant, if applicable), the PDP sponsor and the employer/union may agree that
the employer/union shall directly refund to the Part D eligible (or subscriber/participant, if
applicable) the amount of the low-income premium subsidy up to the monthly premium
contribution previously collected from the Part D eligible (or subscriber/participant, if
applicable). The employer/union is required to complete the refund on behalf of the PDP
sponsor within 45 days of the date the PDP sponsor receives from CMS the low-income
premium subsidy amount payment for the low-income subsidy eligible enrollee.
Note that in some cases the LIS beneficiary may not be the subscriber to or participant in an
employer/union sponsored group health plan, but the spouse or dependent of the
subscriber/participant. In these instances, where the PDP sponsor or employer/union refunds
low-income premium subsidy amounts to LIS enrollees, it may refund such amounts directly
to the employer/union group health plan subscriber/participant on behalf of a spouse or
dependent who is an LIS-eligible beneficiary.
Requirement to Retain and Provide Documents
As a condition of receiving the waivers and modifications described above and to support the
PDP sponsor’s compliance with the low-income pass-through requirements, CMS requires
that all PDP sponsors offering EGWPs retain documents and/or working papers that support
their adherence to these requirements. These include documents evidencing that low-income
premium subsidy amounts were properly passed through or refunded by either the PDP
sponsor or the employer/union group plan sponsor and documents or working papers
evidencing the calculation of “illustrative premium” for each self-insured/self-funded
employer/union group plan sponsor. Also, PDP sponsors will be required to retain all of these
documents and must provide access to this documentation for inspection or audit by CMS (or
its designee) in accordance with the requirements of 42 CFR 423.504(d) and 423.505(d) and
(e).
Requirement to Obtain and Provide Written Agreements With Employer/Union Group Plan
Sponsors
As a condition of receiving the waivers and modifications described above, CMS also requires
that all PDP sponsors offering EGWPs enter into written agreements with employers/unions
which require the employer/union to comply with the above requirements and to retain and
provide documents upon request to the PDP sponsor evidencing the employer/union group
plan sponsor’s adherence to such requirements. This includes the requirement that any low-income premium subsidy amount paid to the employer/union sponsor on behalf an LIS
beneficiary is first used to reduce any portion of the monthly PDP premium paid for by the
Part D eligible (or subscriber/participant, if applicable). Also, if the employer/union assumes
responsibility for either reducing up-front LIS beneficiaries’ monthly premiums or refunding
to LIS beneficiaries their monthly premium contributions, the PDP sponsor shall ensure that
its written agreement with the employer/union also reflects the employer/union sponsor’s
assumption of these duties consistent with the above requirements (including a provision
requiring that any refunds to an LIS beneficiary be completed within 45 days of the date the
PDP sponsor receives the low-income premium subsidy amount payment for that beneficiary
from CMS). PDP sponsors will be required to retain all of these written agreements with
employers/unions and must provide access to these written agreements for inspection or audit
by CMS (or its designee) in accordance with 42 CFR 423.504(d) and 423.505(d) and (e).
CMS Payment of LIS Premium Amounts to All EGWPs
Beginning in 2007, HPMS included a new table that provides all Part D sponsors with the
monthly payments they are receiving to subsidize their low-income enrollees’ premiums.
These same payment amounts are reflected in the electronically generated reports received by
all PDP sponsors on a regular basis from CMS. HPMS will continue to have a separate table
providing the low-income premiums that beneficiaries pay in the plans. However, HPMS will
no longer display the low-income premiums for EGWP enrollees in this table. These amounts
will be reflected as “N/A” for all EGWPs because, as stated above, the premiums for
beneficiaries enrolled in these plans can vary, and CMS does not collect this information.
Note that beginning in 2007, the following rounding rules were used in determining EGWP
LIS premium payment amounts: the base beneficiary premium ($27.35) was rounded to the
nearest $.10 ($27.40) and was used as the Direct Contract or “800 series” plan premium. See
42 CFR 423.780(b)(1). The rounded base beneficiary premium was compared to the unrounded low-income benchmark premium amount for the PDP region. If the low-income
benchmark premium amount was less than the rounded base beneficiary premium, the low-income benchmark premium amount was rounded to the nearest $.10 to derive the low-income premium subsidy amount.
History
(Rev.6, Issued: 11-07-08, Effective/Implementation: 11-07-08)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-09-17
- Edition
- iom-2026-09-17
- Content hash
345a65a2f4e5fa5ed644b925849faf0a9c2eae444767e65d66f14bcb9386b377
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