Direct Answer: Open enrollment on Washington Healthplanfinder runs November 1, 2026 through January 15, 2027. Adult dental is a stand-alone plan, so you have to add it on purpose. Coverage starts January 1.
If you buy your own health insurance instead of getting it through a job, your 2027 premium is going up. Washington’s insurance commissioner approved an average 22.2 percent rate increase on September 9, 2026, and it takes effect January 1, 2027.
That part made the news. The part that catches people in Renton and the rest of south King County is quieter: adult dental is not part of your medical plan. It is a separate stand-alone plan you have to choose, and the window to choose it is short.
I talk to patients every week who assumed dental came along for the ride. Below is what actually happened, what the enrollment window looks like, and how to think about whether a plan is worth it for the work you already know you need.
What Washington approved, and when it hits
Two things happened back to back in September 2026.
On September 9, the state Office of the Insurance Commissioner approved an average 22.2 percent rate increase for 2027 individual health plans. Carriers had originally asked for about 22.4 percent. Reporting at the time put the number of affected Washingtonians at roughly 250,000 people who buy coverage through the state exchange.
On September 10, the bipartisan Washington Health Benefit Exchange Board certified 81 health plans and 10 dental plans from a dozen carriers for plan year 2027. You can read the Exchange’s own announcement at the Washington Health Benefit Exchange.
Those 10 dental plans are the menu. If you want adult dental coverage through Healthplanfinder next year, you pick from that list during open enrollment.
A few things worth being clear about:
- This applies to people who buy their own coverage through Washington Healthplanfinder, not to employer plans
- The rate increase is an average, so your specific plan may land above or below it
- Everything is effective January 1, 2027
If your dental coverage comes through work, none of this changes your card. Your renewal still runs on your employer’s schedule.
Adult dental is a separate plan, and nobody adds it for you
This is the single thing I wish more people in Renton, Tukwila and Kent knew before January.
When you enroll in a medical plan on Healthplanfinder, adult dental does not come with it. Dental is sold as a stand-alone plan, and you have to actively select one during the enrollment window.
Open enrollment runs November 1, 2026 through January 15, 2027. Miss it and you generally wait until the next window unless you have a qualifying life event.
What happens if you skip it? Nothing dramatic on January 2. It shows up later, when you need a crown or a root canal and you are paying the full fee out of pocket instead of a share of it.
I see the same pattern on our phones. Callers ask about insurance before they ask about anything else, and the most named plans in our area are Delta Dental PPO, Regence, Premera, Cigna, GEHA, Guardian and United Healthcare. Plan names on the exchange may look familiar, but the benefits inside a stand-alone exchange dental plan are often different from the group version of the same carrier’s plan.
If you want the longer walkthrough of how that choice works, we covered it in No Dental Plan Through Work? How Washington’s 2027 Enrollment Window Works.
The 2027 dates that actually matter
Here is the short version of the calendar, with what each date means for your teeth and not just your premium.
| Date | What happened or happens | What it means for you |
|---|---|---|
| September 9, 2026 | Insurance commissioner approved an average 22.2 percent rate increase for 2027 individual health plans | Your 2027 premium is likely rising if you buy your own coverage |
| September 10, 2026 | Exchange Board certified 81 health and 10 dental plans from a dozen carriers | Ten stand-alone dental plans to compare for next year |
| November 1, 2026 | Open enrollment opens on Washington Healthplanfinder | First day you can add or switch a stand-alone dental plan |
| January 1, 2027 | New plan year begins | Coverage starts and your annual maximum resets |
| January 15, 2027 | Open enrollment closes | After this, changes usually require a qualifying life event |
What a stand-alone dental plan really covers
Dental plans are not health insurance with a different logo. They work more like a coupon book with a ceiling.
Most plans follow the same shape:
- Preventive care such as exams, X-rays and routine cleanings, often covered at or near full benefit
- Basic care such as fillings and some extractions, usually covered at a percentage
- Major care such as crowns, root canals and some periodontal surgery, covered at a lower percentage
- An annual maximum, the total dollar amount the plan will pay in a year
That annual maximum is where the math gets real. Annual maximums on individual dental plans are commonly modest, and in our area a single crown or root canal can use a large share of it in one visit. Fees vary widely by tooth, by complexity and by whether a buildup or post is needed, so the only honest number is the one on a written estimate after an exam.
Two more rules catch people off guard. Waiting periods can delay major work for months after a new plan starts. And a missing tooth clause can exclude a tooth that was already gone before you enrolled, which matters a lot if you are planning an implant.
We broke that second one down in You Enrolled in a New Dental Plan. Why the Implant Still Isn’t Covered.
Five steps to sort your 2027 dental coverage
If you only have twenty minutes this month, spend it on these five steps in this order.
Plan or pay as you go? How I help patients think it through
Plenty of adults in Newcastle, Burien and downtown Renton do fine without a dental plan. Plenty do not. The deciding factor is usually what is already on your treatment plan.
If your mouth is stable and you come in twice a year for cleanings and exams, the math is close. Premiums over twelve months can land near what preventive visits cost outright, and you keep full control of your schedule.
If you already know a crown, a root canal or periodontal treatment is coming, coverage usually earns its keep, as long as the waiting period does not push the work past when you need it.
Three things I would check before you decide:
- Whether the dentist you want to see is in network on that specific plan, since network status can change year to year
- The annual maximum, and whether it realistically covers what you have been told you need
- Whether a payment plan would cover the gap better than a premium would
A caller once told us they were price shopping after a four figure quote from another office. That is a reasonable thing to do. Just compare the whole picture, not the headline number, and read How Dental Insurance Works in Washington, and Where It Falls Short before you commit.
Frequently Asked Questions About 2027 Dental Enrollment in Washington
Is dental included in my Healthplanfinder medical plan?
For adults, no. Adult dental is a stand-alone plan on Washington Healthplanfinder, which means you have to select and pay for it separately during the enrollment window.
Does the 22.2 percent increase apply to dental plans too?
The approved 22.2 percent average increase applies to 2027 individual health plan rates. Dental plan pricing is set separately by each carrier, so check the actual premium on the plan you are considering rather than assuming the same jump.
I missed the window. Can I still get dental coverage?
After January 15, 2027, enrollment generally requires a qualifying life event such as losing other coverage, moving or certain household changes. If none of those apply, people usually either wait for the next window or handle care out of pocket, sometimes with a payment plan spread over several months.
Do you take Delta Dental PPO?
We accept most major PPO plans, and Delta Dental is the plan patients ask about most often in Renton. Network status can shift from year to year, so the safest move is to call our front desk and have your specific plan and member ID checked before you book.
If I enroll November 1, when can I actually get a crown covered?
Coverage starts January 1, 2027 at the earliest, and major work like crowns often carries a waiting period on individual plans. Ask the carrier directly how long that period runs before you build your treatment timeline around it.
Sorting out your 2027 coverage before the window closes?
If you are weighing a stand-alone dental plan and want to know what your treatment would actually involve first, we are glad to walk through it with you. Cedar Dental Group sees adults from Renton and across south King County, and our team can review your plan details and give you a written estimate before you commit to anything. Call 425-430-0400 or visit cedardentalgroup.com whenever you are ready to talk it through.
