Washington kept all twelve of its individual-market carriers for 2027, and King County alone has eight competing insurers. Premiums still rose a median 22 percent, the steepest of any state I have tracked. The most competitive market is not the cheapest.
Indiana lost two carriers for 2027. Oregon lost two. Washington lost none, and its prices went up the most.
I pulled Washington's individual medical rate filings out of the public SERFF health plan binders, the same way I did for Minnesota, Indiana, and Oregon. Every on-exchange plan, both years, all nine rating areas, all twelve carriers. Nobody is leaving the Washington exchange. And the median on-exchange plan that survives into 2027 still costs about 22 percent more at age 21, the steepest increase of any state I have tracked.
That combination is the whole point of this post. If you want to know whether these increases are really about insurers fleeing a broken market, Washington is the control group. The market did not break, and the prices went up anyway.
On-exchange carriers12 unchanged; nobody exits the exchange
Median rate change+21.9%age 21, on plans that survive; the steepest of the three states
Carriers in King County8by parent — the most competitive market I have mapped
Range of increases+0.3% to +45%Kaiser at the floor, Ambetter at the ceiling
Source: SERFF health plan binders (plan year 2026 and 2027 individual medical); WA OIC rate filings
A note on the number I am comparing
Every premium here is for a 21-year-old, non-tobacco. Age 21 is the anchor of the federal default age curve, where the age factor is exactly 1.000, so an age-21 comparison isolates the price change from any change in age. Multiply by your own age factor to get your number. Washington permits a tobacco surcharge, so these are the non-tobacco base rates.
Twelve carriers, and King County has eight of them
Washington's individual market is the most competitive I have mapped. Counting by parent company, King County, greater Seattle, has eight separate insurers competing for enrollment: Premera, which also owns LifeWise, plus Kaiser, Cambia's Regence and BridgeSpan, Centene's Ambetter, UnitedHealthcare, Molina, Wellpoint, and Community Health Plan of Washington. Every one of the nine rating areas holds at least four.
None of them left. The only 2027 departure in the state is Providence Health Plan, which is shutting down its insurance division and dropping out of Oregon too. But in Washington, Providence only ever sold off-exchange, so its exit does not touch a single on-exchange plan here. The exchange itself is exactly as full in 2027 as it was in 2026.
The most competitive market I have mapped still raised prices 22 percent
Here is what each Washington carrier filed as its average increase, next to the median change on the plans it kept.
What each Washington insurer filed vs. what happened to the plans it kept
Median change on plans they keptAverage rate change they filed
0%10%20%30%
Ambetter+29.2%→+27.8% −1.4 pts
UnitedHealthcare+27.8%→+26.4% −1.4 pts
Molina+24.7%→+25.8% +1.1 pts
CHPW+24.7%→+24.5% −0.2 pts
Premera+24.2%→+24.0% −0.2 pts
LifeWise+22.0%→+21.2% −0.8 pts
Regence (Clark)+17.2%→+17.4% +0.2 pts
Kaiser WA+10.7%→+14.0% +3.3 pts
Wellpoint+14.4%→+13.7% −0.7 pts
BridgeSpan+12.3%→+12.7% +0.3 pts
Kaiser NW+9.8%→+9.5% −0.3 pts
Regence+8.4%→+8.6% +0.2 pts
Table view
Issuer
Median, kept plans
Filed average
Gap
Plans kept
Plans dropped
Ambetter
+29.2%
+27.8%
-1.4 pts
68
13
UnitedHealthcare
+27.8%
+26.4%
-1.4 pts
42
14
Molina
+24.7%
+25.8%
1.1 pts
28
0
CHPW
+24.7%
+24.5%
-0.2 pts
32
0
Premera
+24.2%
+24.0%
-0.2 pts
30
10
LifeWise
+22.0%
+21.2%
-0.8 pts
70
14
Regence (Clark)
+17.2%
+17.4%
0.2 pts
9
1
Kaiser WA
+10.7%
+14.0%
3.3 pts
49
21
Wellpoint
+14.4%
+13.7%
-0.7 pts
6
0
BridgeSpan
+12.3%
+12.7%
0.3 pts
32
0
Kaiser NW
+9.8%
+9.5%
-0.3 pts
16
2
Regence
+8.4%
+8.6%
0.2 pts
35
7
Source: Filed averages: WA OIC 2027 individual-market rate filings. Plan medians: 2026 and 2027 SERFF rate templates.
Same pattern as Indiana and Oregon: filed and actual agree, carrier by carrier. Premera filed 24.0 percent and its surviving plans moved 24.2. Ambetter filed 27.8 and moved 29.2. Kaiser filed 9.5 and moved 9.8. No hidden crosswalk gap anywhere.
But look at the level. Eight carriers competing in King County did not hold anyone's increase down to single digits except Kaiser. Ambetter's plans in north-central Washington jump as much as 45 percent. Molina, UnitedHealthcare, Premera, LifeWise, and Community Health Plan of Washington all land in the low-to-mid twenties. The statewide weighted average of all the filings is 22.4 percent.
This is the finding I care about most across all four states I have now done. The increases are not a symptom of carriers fleeing. Indiana and Oregon lost insurers and raised prices. Washington kept every one of them and raised prices just as hard. Whatever is driving 2027 premiums, competition is not restraining it. And every carrier's own filing names the same two causes: medical cost trend, and the expiration of the enhanced premium tax credits, which pushes healthier people out of the risk pool and leaves a sicker, more expensive one behind.
Kaiser is the exception
One carrier is holding the line. Kaiser Permanente, across both its Washington entities, filed the lowest increases in the state, 9.5 percent for its Northwest plans and 14 percent for its Washington plans, and its surviving plans move even less at the median. In southeast Washington a Kaiser gold plan goes up 0.3 percent.
Kaiser is an integrated system: it owns its hospitals and employs its doctors, so the cost trend everyone else is passing straight through to premiums shows up smaller inside its own walls. That is worth holding onto the next time someone tells you these increases are simply unavoidable. For one carrier, competing in the same state under the same rules, they were largely avoided.
Every on-exchange Washington plan, 2026 to 2027
Pick a rating area. Each row is one plan: where it priced in 2026, where it prices in 2027, and what moved. King County is the default because it holds the most plans and the most people.
Every on-exchange Washington plan, 2026 → 2027 (age 21)
Metal
Area 1, King County. Seattle, Bellevue. 1 counties: King.
2026 premium2027 premiumAvailable here in 2027 onlyAvailable here in 2026 only
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$460→$572+24.2%
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$572Dropped
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$580New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$726New to area
UHC Gold AdvantageGold$600→$761+26.9%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$609→$772+26.9%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$721→$917+27.1%
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$620Dropped
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$499→$628+25.9%
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$637New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$798New to area
UHC Gold AdvantageGold$650→$836+28.6%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$660→$849+28.6%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$782→$1008+28.9%
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$544Dropped
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$438→$559+27.7%
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$567New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$710New to area
UHC Gold AdvantageGold$570→$743+30.4%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$579→$755+30.4%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$685→$896+30.8%
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$540Dropped
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$435→$548+26.0%
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$556New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$696New to area
UHC Gold AdvantageGold$566→$729+28.7%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$575→$740+28.7%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$681→$879+29.0%
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$605Dropped
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$487→$622+27.9%
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$631New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$790New to area
UHC Gold AdvantageGold$634→$828+30.6%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$644→$841+30.6%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$762→$998+30.9%
2026 premium2027 premiumAvailable here in 2027 onlyAvailable here in 2026 only
$400$600$800$1000$1200
Ambetter10 plans
Ambetter Cascade Select BronzeExpanded Bronzestill sold in other rating areas in 2027$288Left area
Ambetter Cascade Select Vital GoldGoldstill sold in other rating areas in 2027$365Left area
Ambetter Cascade Select Complete GoldGoldstill sold in other rating areas in 2027$391Left area
Ambetter Cascade BronzeExpanded Bronze$433New
Ambetter Balanced Care 4Silver$455Dropped
Ambetter Cascade Select SilverSilverstill sold in other rating areas in 2027$468Left area
Ambetter Cascade Vital GoldGold$381→$547+43.5%
Ambetter Secure Care 5Gold$378→$550+45.4%
Ambetter Cascade Complete GoldGold$408→$581+42.5%
Ambetter Cascade SilverSilver$489→$688+40.7%
UnitedHealthcare10 plans
UHC Bronze Value HSAExpanded Bronze$478Dropped
UHC Bronze EssentialBronze$445→$557+25.4%
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$608Dropped
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$489→$616+25.9%
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$625New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$782New to area
UHC Gold AdvantageGold$637→$820+28.6%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$647→$832+28.6%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$767→$988+28.9%
UHC Silver Copay FocusSilver$767→$989+28.9%
CHPW4 plans
Community Health Plan of Washington Cascade Select BronzeExpanded Bronze$289→$354+22.6%
Community Health Plan of Washington Cascade Select Vital GoldGold$367→$458+24.7%
Community Health Plan of Washington Cascade Select Complete GoldGold$393→$491+25.1%
Community Health Plan of Washington Cascade Select SilverSilver$470→$550+16.9%
Premera6 plans
Premera Blue Cross Cascade BronzeExpanded Bronzesold elsewhere in 2026, new to this area in 2027$732New to area
Premera Blue Cross Preferred BronzeExpanded Bronzesold elsewhere in 2026, new to this area in 2027$752New to area
Premera Blue Cross Preferred GoldGoldsold elsewhere in 2026, new to this area in 2027$964New to area
Premera Blue Cross Cascade Vital GoldGoldsold elsewhere in 2026, new to this area in 2027$991New to area
Premera Blue Cross Cascade Complete GoldGoldsold elsewhere in 2026, new to this area in 2027$1038New to area
Premera Blue Cross Cascade SilverSilversold elsewhere in 2026, new to this area in 2027$1215New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGold$552Dropped
UnitedHealthcare of Oregon, Inc. Cascade BronzeExpanded Bronze$444→$552+24.3%
UHC Bronze ValueExpanded Bronzewas “UHC Bronze Essential (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$560New to area
UnitedHealthcare of Oregon, Inc. Cascade Vital GoldGoldwas “UHC Bronze Value HSA (Off Exchange Only)” in 2026sold elsewhere in 2026, new to this area in 2027$701New to area
UHC Gold AdvantageGold$578→$734+27.0%
UnitedHealthcare of Oregon, Inc. Cascade Complete GoldGold$587→$746+27.0%
UnitedHealthcare of Oregon, Inc. Cascade SilverSilver$695→$885+27.3%
UHC Silver Copay FocusSilver$695→$886+27.4%
CHPW4 plans
Community Health Plan of Washington Cascade Select BronzeExpanded Bronze$272→$353+29.9%
Community Health Plan of Washington Cascade Select Vital GoldGold$346→$457+32.1%
Community Health Plan of Washington Cascade Select Complete GoldGold$370→$491+32.5%
Community Health Plan of Washington Cascade Select SilverSilver$443→$549+23.9%
Premera6 plans
Premera Blue Cross Cascade BronzeExpanded Bronzesold elsewhere in 2026, new to this area in 2027$699New to area
Premera Blue Cross Preferred BronzeExpanded Bronzesold elsewhere in 2026, new to this area in 2027$717New to area
Premera Blue Cross Preferred GoldGoldsold elsewhere in 2026, new to this area in 2027$920New to area
Premera Blue Cross Cascade Vital GoldGoldsold elsewhere in 2026, new to this area in 2027$946New to area
Premera Blue Cross Cascade Complete GoldGoldsold elsewhere in 2026, new to this area in 2027$990New to area
Premera Blue Cross Cascade SilverSilversold elsewhere in 2026, new to this area in 2027$1159New to area
Source: SERFF health plan binders (WA). 2026 rates approved; 2027 rates as filed, subject to review.
A few things worth finding:
Kaiser holds the floor, Ambetter the ceiling. The gap between the mildest and steepest carrier is more than 40 points, in the same state, in the same year.
Crowded and still expensive. In King County, with eight carriers on the shelf, the cheapest surviving silver plan is Community Health Plan of Washington's at about $544. Competition set the floor; it did not stop the floor from rising.
The middle of the market is a wall. The middle half of surviving plans land between +12.7 and +26.8 percent. This is broad, not a few outliers.
The same plan ID is not the same plan
Of the 417 continuing plan and rating-area combinations, only 21 changed their marketing name. That is a far lower rate than Indiana or Oregon, where more than half did. Washington's carriers largely left their plans intact and simply raised the price, which makes the year-over-year comparison here unusually clean: when the tracker says a Washington plan went up 22 percent, it is almost always the same plan.
How I built this, and what it does not tell you
Every number comes from the CMS Rates Table Template inside each insurer's SERFF health plan binder, joined to the plan names on each binder's summary page. Age 21, non-tobacco, on-exchange only.
Two Washington-specific notes. Regence files under two separate HIOS issuer IDs, one of them just for Clark County across the river from Portland, and I treat both, plus BridgeSpan, as the single Cambia parent they belong to. And two issuers are excluded because none of their plans are on-exchange: Asuris Northwest Health, and Providence, whose only Washington individual plans were off-exchange before it left.
The caveats:
2027 rates are proposed, not approved. Washington's Office of the Insurance Commissioner reviews these and final rates can move.
This is age 21, on-exchange, before subsidies. About two-thirds of Washington exchange enrollees receive premium tax credits, and with the enhanced credits expiring the gap between these numbers and what people actually pay is about to widen sharply.
Off-exchange plans are excluded, along with the two off-exchange-only issuers noted above.