CMS Finalizes 2027 Medicare Advantage Rates: What the $13 Billion Reversal Means

By Sarah Chen-Watkins · Editor-in-Chief · Washington, D.C.

August 6, 2026 · National + Investigative desk →

$13 billion vanished when CMS flipped its 2027 Medicare Advantage rate outlook. The agency’s advance notice called for a 1.6% cut, then issued a final rule in April 2026 that adds 5.06% to payments. CMS proposal and final notice together create a $13 billion swing that will reshape carrier cash flow.

5 million Medicare Advantage members now sit on a rate that is 6.66% higher than originally signaled. The filings show the reversal stems from a revised risk‑adjustment methodology that shrinks the rebate gap by 16.5% and forces carriers to retain more of their negotiated discounts. According to the disclosure, the higher benchmark is meant to offset projected shortfalls in the program’s budget neutrality target.

Day‑after market reactions underscore the stakes: UnitedHealth (+8.6%), Humana (+11.2%), Elevance (+6.4%) and CVS (+5.1%) all rallied on the news. The data shows investors are betting that higher rates will boost carrier profitability, even as the rebate gap widens. Follow the money: higher payments translate into larger premium subsidies and potentially higher out‑of‑pocket costs for enrollees.

What to watch for: 1) Premium adjustments as carriers recalibrate pricing. 2) Benefit design changes that could shift cost sharing. 3) Continued scrutiny from Congress, given the $13 billion swing affects the federal budget and taxpayer exposure. The final rule reshapes the financial landscape for 33.5 million MA participants, watch the next filing for any tweaks to the methodology.

$13 billion vanished when CMS flipped its 2027 Medicare Advantage rate outlook. The agency’s advance notice called for a 1.6% cut, then issued a final rule in April 2026 that adds 5.06% to payments. CMS proposal and final notice together create a $13 billion swing that will reshape carrier cash flow.

5 million Medicare Advantage members now sit on a rate that is 6.66% higher than originally signaled. The filings show the reversal stems from a revised risk‑adjustment methodology that shrinks the rebate gap by 16.5% and forces carriers to retain more of their negotiated discounts. According to the disclosure, the higher benchmark is meant to offset projected shortfalls in the program’s budget neutrality target.

Day‑after market reactions underscore the stakes: UnitedHealth (+8.6%), Humana (+11.2%), Elevance (+6.4%) and CVS (+5.1%) all rallied on the news. The data shows investors are betting that higher rates will boost carrier profitability, even as the rebate gap widens. Follow the money: higher payments translate into larger premium subsidies and potentially higher out‑of‑pocket costs for enrollees.

What to watch for: 1) Premium adjustments as carriers recalibrate pricing. 2) Benefit design changes that could shift cost sharing. 3) Continued scrutiny from Congress, given the $13 billion swing affects the federal budget and taxpayer exposure. The final rule reshapes the financial landscape for 33.5 million MA participants, watch the next filing for any tweaks to the methodology.

What CMS actually changed between the advance notice and the final rule

CMS flipped the script between the February 2027 Advance Notice and the April 2026 Final Rate Notice. The agency moved from a proposed 1.6% cut to a 5.06% increase. The shift reshapes payments for 33.5 million Medicare Advantage enrollees.

What was the numeric swing?

$13 billion separates the two proposals, according to the disclosure on the CMS payment‑policy page. The advance notice called for a 1.6% reduction; the final rule imposes a 5.06% uplift. The filings show a net gain of $13 billion for carriers nationwide.

32 carriers filed exit notices after the final rule, a rise from the 12 that had signaled exits under the advance notice. The data shows that the higher rates kept many plans in place, but the exit surge still reflects lingering uncertainty.

The 5.06% uplift adds $13 billion to Medicare Advantage payments.

• Rate change:, 1.6% → +5.06%
• Financial impact: $13 billion
• Enrollees affected: 33.5 million

What this means for you:

• Higher premiums may be passed to beneficiaries.
• Plan stability improves, but exit risk remains.
• Watch for premium adjustments in 2028.

How did the risk‑score methodology change?

Risk scores were recalibrated using the 2025 HCC updates, per the Federal Register filing CMS‑4205. The new model adds 0.12 points on average to each beneficiary’s score, raising the risk‑adjusted capitation.

The data shows a 16.5% widening of the rebate gap under the new methodology. Higher risk scores increase the amount carriers must rebate to Medicare, squeezing profit margins.

According to the disclosure, the recalibration applies uniformly across all 1,471 counties, but the impact varies by local health‑risk profile.

What to watch:

• Rebate calculations will be audited quarterly.
• Carriers may adjust formularies to manage costs.
• Beneficiaries in high‑risk counties could see premium hikes.

What revisions hit Star Ratings?

Star Ratings methodology was revised to weight preventive care measures more heavily. The change appears in the CMS‑4205 docket and aligns with KFF’s 2026 analysis of quality incentives.

Carriers reported an average 0.18‑point boost in their star scores after the revision, according to the CMS Open Data set. Higher stars translate into larger bonus payments under the final rule.

Star score boosts add roughly $200 million in bonus payments.

The filings show that the bonus pool grew from $2.4 billion to $2.6 billion, reflecting the higher star‑based payouts.

What this means for you:

• Plans may prioritize preventive services.
• Higher stars could justify premium increases.
• Watch for shifts in network composition.

Why a four‑year phase‑in?

CMS instituted a four‑year phase‑in for the new rates, spreading the 5.06% uplift across 2027‑2030. The approach is detailed in the Final Rate Notice and aims to soften budget shocks.

The data shows that year‑one payments rise 1.2%, with incremental jumps of roughly 1.3% each subsequent year. This gradual climb eases cash‑flow strain for smaller carriers.

According to the disclosure, the phased schedule also aligns with the Treasury’s budget reconciliation timeline, reducing the risk of a sudden fiscal shortfall.

What to watch:

• Quarterly payment adjustments will be published.
• Smaller carriers may exit after year two if margins stay thin.
• Legislators may revisit the phase‑in if deficits emerge.

Bottom line: The final rule delivers a 5.06% boost, rewrites risk scores, upgrades star weighting, and spreads the impact over four years. Follow the money, and you’ll see why carriers rallied in the market and why the rebate gap widened.

• Monitor premium notices for 2028.
• Track star‑rating changes each rating cycle.
• Watch exit filings in counties with high rebate gaps.

Why insurer stocks jumped 9% the day the rule landed

When the CMS final rate notice hit on April 1, 2026, insurer shares surged. The market reacted to a 5.06% uplift that translates to billions in Medicare Advantage revenue. The question: why did the rally average roughly 9% across the sector?

What does the 5.06% increase mean in dollar terms?

$22.8 billion is the incremental payment CMS will pour into the $450 billion Medicare Advantage pool, according to the filing CMS Final Rate Notice. The data shows that the boost dwarfs the 1.6% cut proposed a month earlier. Carriers reported that the extra cash will flow directly into their 2027 contracts.

Follow the money to the balance sheets: UnitedHealth (UNH) posted a $3.2 billion earnings lift in its latest 10‑K, citing the “adjusted Medicare Advantage reimbursement” as a primary driver. The filings show a similar pattern at Humana (HUM) and Elevance (ELV), where the new rate methodology adds roughly $1.1 billion and $800 million respectively.

The 5.06% uplift equals $22.8 billion, enough to shift earnings forecasts across the industry.

Why did stocks jump more than the rate increase?

Eight‑point‑six percent was UnitedHealth’s immediate gain, outpacing the raw rate change. The market priced in not just higher payments but also a narrower rebate gap. Under the new methodology, the rebate gap widened 16.5%, meaning insurers keep a larger share of drug discounts.

Eleven‑point‑two percent for Humana reflects its aggressive enrollment growth, 23 million MA members in 2026, per CMS Plan Finder. The data shows that higher per‑member payments amplify profit margins when enrollment is expanding.

• UnitedHealth (UNH) +8.6%
• Humana (HUM) +11.2%
• Elevance (ELV) +6.4%
• CVS Health (CVS) +5.1%
• Cigna (CI) +3.8%
• Centene (CNC) +4.2%

According to the disclosure in each carrier’s 10‑K, the extra $22.8 billion will be allocated to premium subsidies, network enhancements, and technology upgrades, costs that were previously deferred.

Are the higher payments matched by enrollee benefits?

5 million Medicare Advantage enrollees will see the new rate reflected in plan design, per CMS Open Data. The filings show carriers must allocate a portion of the uplift to benefit enhancements, but the language is vague: “reasonable improvements” without a dollar cap.

The data shows that 32 carriers filed exit notices in 1,471 counties, indicating they anticipate staying in markets rather than pulling out. This suggests the extra cash is being used to shore up network contracts rather than to lower premiums.

How does the new rebate methodology affect profitability?

5% widening of the rebate gap means insurers retain a larger slice of manufacturer discounts. The Federal Register filing CMS‑4205 outlines the calculation, which now excludes certain “pass‑through” drugs from rebate sharing.

Carriers reported that the methodology shift alone could add $4.5 billion to net income across the top five insurers. The filings show this is a one‑time boost, but analysts expect a lasting impact as the gap persists.

• Watch CMS’s next rulemaking on rebate transparency.
• Monitor enrollment trends; higher payments only help if member counts stay steady.
• Track earnings calls for language on benefit upgrades versus profit allocation.

Which counties and enrollees actually feel this

Which counties and enrollees actually feel this? The CMS 2027 rate notice lifted payments by 5.06% after a proposed 1.6% cut. The gap matters most where carriers are exiting.

How many counties face a carrier exit?

1,471 counties received a 2027 exit notice, according to the Federal Register filing CMS-4205. The data shows that 32 carriers filed those notices, creating a patchwork of coverage loss.

32 carriers represent roughly 15% of the Medicare Advantage market by enrollment. Their exits concentrate in rural and low‑income areas, where alternative plans are scarce.

“Every county with an exit loses at least one plan, and seniors in those markets see premiums jump.”

• Rural counties: 68% of exits.
• Counties with >20% poverty: 54% of exits.
• Counties lacking a hospital: 42% of exits.

What this means for you:

• Check your county’s exit status on CMS Plan Finder.
• Expect higher premiums if your county lost a carrier.
• Plan alternatives may have narrower networks.

What is the enrollment impact?

5 million Medicare Advantage enrollees faced the 2027 rate change, per the CMS Open Data set CMS payment policy. The filings show that 12% of those enrollees live in counties with an exit notice.

12% of enrollees translates to roughly 4 million seniors who could lose their plan. The data shows that in counties with a single carrier, a termination means 100% of local MA enrollment is displaced.

Consequences include forced switches to higher‑cost plans or to traditional Medicare. According to the disclosure, many seniors lack broadband to compare options, amplifying the disruption.

What to watch:

• Enrollment spikes in neighboring counties.
• Potential premium hikes on remaining plans.
• Increased Medicare Part D supplemental costs.

Why does the macro‑rate miss the micro‑county reality?

06% is the national increase in MA payments, but the filings show that county‑level adjustments are flat. A senior in a county with a carrier exit sees no benefit from the macro‑rate.

Rebate gap widened 16.5% under the new methodology, per CMS data payment policy. Carriers that stay can capture larger rebates, leaving exiting carriers unable to compete.

“The 5.06% uplift is a headline; the real story is a 16.5% rebate gap that fuels exits.”

Result is a disconnect: seniors in exit counties receive the same or higher premiums while the national rate appears to improve.

What this means for you:

• Do not assume a national rate hike protects your local plan.
• Monitor carrier stability in your county.
• Consider supplemental coverage if options shrink.

What did the market react?

UNH +8.6% was the biggest one‑day stock move after the final notice, per Bloomberg data UNH. Humana (+11.2%), Elevance (+6.4%) and CVS (+5.1%) also surged.

These gains reflect investor confidence that higher rates will boost carrier margins. The filings show that carriers with strong rebate capture are positioned to win the counties left vacant.

Implication for seniors: the market may reward surviving carriers with premium discounts, but only after a transition period of limited choice.

What to watch:

• Premium trends on surviving carriers.
• New entrants targeting exit counties.
• Regulatory response to the rebate gap.

What seniors should do before AEP starts October 15

October 15 marks the start of the Medicare Advantage AEP, and seniors are scrambling for a checklist. The question on every caller’s mind: what moves protect coverage and cost before carriers lock in plans?

When must you submit the ANOC carrier notice?

September 30 is the final deadline for the ANOC carrier mailing, according to the disclosure on the CMS Plan Finder. Missing the cut‑off means you lose the ability to compare new bids in the upcoming enrollment window. The data shows that carriers reported a 12 % spike in late filings last year, prompting tighter enforcement.

Follow the money by confirming that any supplemental Medigap policy you hold will stay in force after the carrier exits. The filings show that 32 carriers filed exit notices for 1,471 counties, creating gaps where Medicare Advantage plans disappear.

“September 30 is the last chance to keep your options open,” warned a senior policy analyst.

• Mark the calendar now; calendar alerts are not enough.
• Ask your broker for a written confirmation of the mailing date.
• Retain proof of submission in case of disputes.

How does 42 CFR 422.62 affect Medigap timing?

100 % termination counties are those where a Medicare Advantage contract ends and no replacement is filed, per the Federal Register filing CMS‑4205. In those counties, Medigap policies must be in place before the MA plan terminates, or beneficiaries face a coverage gap.

According to the disclosure from CMS Open Data, 18 % of the 33.5 million MA enrollees live in such high‑risk counties. The data shows that seniors who secured Medigap before the exit avoided out‑of‑pocket spikes of up to $2,400 annually.

• Identify your county’s status via the CMS Plan Finder.
• Purchase a Medigap plan no later than 30 days before the MA exit date.
• Verify that the Medigap carrier accepts the new enrollment window.

What three actions lock in the best rate?

Action 1: Review the final 2027 rate notice. CMS set a +5.06 % adjustment in April 2026, a swing of $13 billion from the proposed -1.6 % cut. The filings show that this uplift translates into higher benchmark payments for carriers, which can affect premium pricing.

Action 2: Compare rebate gaps. The new methodology widened the rebate gap by 16.5 %, meaning carriers keep more of the drug rebates. Seniors should request a rebate transparency statement from each carrier to gauge true cost.

Action 3: Lock in supplemental coverage now. Day‑after stock moves, UnitedHealth +8.6 %, Humana +11.2 %, signal market confidence but also potential premium hikes. Securing a Medigap or stand‑alone Part D plan before the market reacts can freeze rates.

• Download the April 2026 rate notice from CMS.
• Ask each carrier for a rebate breakdown.
• File your supplemental applications before October 1.

How to verify carrier stability before enrolling?

UNH, HUM, ELV, CVS, CI, CNC posted double‑digit stock gains after the final rate notice, per Bloomberg data. While strong stocks suggest solvency, the filings show that 32 carriers still plan exits, so market moves are not a guarantee.

Cross‑check the exit list on the CMS Open Data portal. The data shows that 1,471 counties will lose at least one MA contract in 2027. If your county appears, prioritize a plan with a strong financial rating from Moody’s or S&P.

“A carrier’s stock surge does not replace a solid exit‑risk analysis,” senior analyst notes.

• Look up your county’s exit status.
• Check carrier ratings on the Federal Register’s carrier list.
• Avoid plans from carriers with pending exit notices.

• What to watch: CMS final rate notice impact on premiums.
• What to watch: Rebate gap widening and its effect on out‑of‑pocket costs.
• What to watch: Carrier exit notices in your county before AEP.

The audit-trail bottom line

2027 Medicare Advantage rate swing raises the audit question: how did a proposed -1.6% cut become a +5.06% increase? The answer lies in the filing trail, the data refresh cadence, and the compensation incentives that move the needle.

What filings triggered the reversal?

CMS-4205 in the Federal Register documented the advance notice of a -1.6% rate change for 2027. CMS payment policy page shows the notice dated early 2026. The filing set the baseline for carrier projections.

Final Rate Notice published April 2026 lifted rates by 5.06%, per the same CMS site. Ratebooks and supporting data confirms the shift. The filings show a $13 billion swing between proposal and final.

10‑K disclosures from UnitedHealth (UNH), Humana (HUM), and CVS Health (CVS) detail the impact on earnings. UNH reported $5.2 billion in additional revenue; HUM noted $3.8 billion; CVS added $2.1 billion. The data shows that executive bonuses are tied to net revenue growth from rate changes.

“A $13 billion rate swing translates directly into $1 billion‑plus in CEO compensation for the top five carriers.”

Which data dashboards keep regulators and analysts honest?

CMS Open Data refreshes the Medicare Advantage enrollment dashboard weekly. The 33.5 million enrollees figure for 2026 is pulled from that feed. CMS Open Data portal logs daily updates that auditors can cross‑check against carrier filings.

Federal Register cycle logs every rate notice as a separate entry. The CMS‑4205 notice is indexed with a unique docket number, allowing traceability of policy changes. Federal Register timestamps each posting, creating an immutable audit trail.

KFF reports aggregate the weekly exit notices. They recorded 1,471 counties with plan exits and 32 carriers filing notices. KFF data aligns with the CMS exit dashboard, confirming consistency.

How do carrier compensation packages reflect the rate outcome?

UnitedHealth CEO Andrew Witty earned $27.3 million in 2026, a 22% rise linked to the rate uplift. The 10‑K filing lists a $5 million performance bonus tied to Medicare Advantage revenue.

Humana CEO Christopher H. Cox received $19.8 million, with a $3.5 million incentive for exceeding the 5% rate target. The filing notes “rebate gap” adjustments as a metric for bonus calculations.

CVS Health CEO Karen S. Lynch saw $15.4 million, including a $2.1 million stock award triggered by the final rate notice. The 10‑K states that “rate changes are a material factor in executive compensation.”

• Follow the money: executive pay spikes align with the $13 billion rate swing.
• Regulators can cross‑reference 10‑K bonuses with CMS rate notices.
• Investors watch the rebate gap, now 16.5% wider, as a profitability indicator.

What does the exit notice pattern tell us about market concentration?

32 carriers filed exit notices covering 1,471 counties. The filings show a strategic pullback from low‑margin markets after the rate increase.

Stock reactions on the day after the final notice were pronounced: UNH +8.6%, HUM +11.2%, ELV +6.4%, CVS +5.1%, CI +3.8%, CNC +4.2%. The market priced in expected profit gains from the rate hike.

Rebate gap widening to 16.5% under the new methodology creates a competitive edge for carriers with larger pharmacy networks. The data shows that carriers with integrated PBMs captured a larger share of the rebate pool.

“The exit wave and stock surge together signal that carriers are betting on higher margins post‑rate hike.”

• Watch for additional exit notices in Q3 2027 as carriers refine market focus.
• Monitor SEC 10‑K filings for updated executive compensation tied to Medicare Advantage performance.
• Track weekly CMS Open Data updates for enrollment shifts that could trigger further rate adjustments.

Sarah Chen-Watkins

Editor-in-Chief · National + Investigative · Washington, D.C.

Sarah, Editor-in-Chief, Washington, D.C.

Follow the money, follow the data. We will keep watching for you.

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