FEHB Open Season: How to Compare Plans and Save
Choosing a federal health plan based only on the premium is a very costly mistake. Many employees often renew their coverage every autumn without looking at deductibles, co-pays, or prescription rules. This passive choice can drain your savings if your health needs change.
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The FEHB Open Season is the annual window when federal employees and retirees can enroll in, change, or cancel their health insurance plans. While many people only look at monthly premiums when choosing a plan, a true comparison requires checking out-of-pocket limits, doctor networks, and drug lists. This period is also vital for workers who need to coordinate their federal benefits with Medicare Part B and Part D. Understanding how these programs work together helps you avoid lifelong enrollment penalties and coverage gaps. Making smart choices during this yearly event ensures your health coverage matches your personal budget and medical needs. Doing this stops big benefit mistakes before they happen and saves you money.
You might wonder when you can make changes and what options are open to you. To help you make these choices, we start with the basics of the enrollment window and what it means for your coverage.
What Is FEHB Open Season and When Can You Change Plans?
The FEHB Open Season is the annual period when federal employees and retirees can enroll in, change, or cancel their health plans. During this window, you can change your coverage without a qualifying life event. For those who want to brush up on their benefits, reviewing federal health plan terminology is a helpful first step before making choices.
How Long Is FEHB Open Season?
This annual window runs for about four weeks, from mid-November to early December. For example, the 2025 window ran from Monday, November 10, to Monday, December 8, 2025. The Office of Personnel Management (OPM) sets these exact dates each year. This period is your main chance to review and change your health benefits.
If you miss this yearly window, you must wait until the next autumn. The only exception is if you have a qualifying life event like marriage, a birth, or a job change. Since this period is short, planning early is key. This helps you avoid rushed choices that affect your health costs and plan choices for the next year.
Dental, Vision, and Spending Accounts
Other federal programs use this same enrollment window. You can change your dental and vision coverage through the Federal Employees Dental and Vision Insurance Program (FEDVIP). Also, you can set up or adjust a flexible spending account through the Federal Flexible Spending Account Program (FSAFEDS). Managing these benefits at the same time helps you plan your health needs for the coming year.
Effective Dates and Plan Transition Rules
Any choices you make during this window take effect on January 1 of the following year. For retired federal workers, premium changes will show up in your February annuity payment. It is vital to know that your old plan stops paying benefits on January 1. You must start using your new plan on that date.
You must use your new benefits on January 1 even if you have not received your physical ID cards. This rule is explained on the OPM retirement FAQ pages. You can show your enrollment receipt if you need medical care before your cards arrive. You can also call your new plan provider to verify your coverage. This step ensures that you do not face a gap in coverage.
How to Compare FEHB Plans Beyond the Premium
Many federal employees make a common mistake during the FEHB Open Season. They focus only on the monthly premium. But choosing a plan based solely on this single cost can be a major error.
The Hidden Costs of Low Premiums
Your health costs include more than what you pay each month. On average, civilian employees paid 12.3% more for health premiums in 2025. That was part of a clear upward trend. Average FEHB premium increases reached about 13.5% in 2025, after rising 7.7% in 2024 and 8.7% in 2023. These rising rates mean you must look closely at what you get for your money.
You also have fewer choices than before. The number of plan options fell to about 130 in 2025. This is a big drop from the 158 options in 2024 and 271 options in 2023. With a smaller pool, a bad choice can cost you thousands of dollars in out-of-pocket fees.
Out-of-Pocket Limits and Deductibles
A low premium often comes with a high deductible. This is the amount you must pay before your plan starts to cover your care. You should also check the out-of-pocket maximum. This is the final limit on what you will pay in a year. Once you hit this limit, the plan covers all allowed costs.
You must also check if your doctors are in the network. Out-of-network care costs far more. You should also look at the prescription drug list, which plans call a formulary. If your plan does not cover your daily drugs, your costs will soar. Learning the details of federal health plan terminology is key to making a smart choice.
A Direct Plan Comparison
The table below shows how these different plan parts work. It shows why you cannot judge a plan by its premium alone. You should weigh all five parts before you pick.
| Plan Attribute | Low-Premium Plan | High-Premium Plan | What to Consider |
|---|---|---|---|
| Monthly Premium | Low monthly cost | High monthly cost | Guaranteed cost but does not cover actual health care. |
| Annual Deductible | Usually high | Usually low or zero | The amount you must pay before the plan covers care. |
| Out-of-Pocket Max | Higher yearly cap | Lower yearly cap | Your final worst-case cost limit for the year. |
| Doctor Network | Often narrow network | Usually broad network | Out-of-network visits will cost you far more. |
| Prescription Drugs | Strict drug list | Broad drug list | Check the plan formulary for your specific medications. |
Weighing these parts helps you see the true cost of each choice. A plan with a cheap monthly rate can quickly become the most costly option if you need frequent care or costly drugs. On the other hand, paying a higher rate each month can save you money if you need a lot of health services.
How Provider Networks and Prescription Coverage Change the Math
Many federal workers pick plans with the lowest monthly price. But a low monthly rate can cost you more if you do not check the details. If your doctor is out of network, or if your drug is not on the plan list, you will pay much more. This is why you must look beyond the premium during the FEHB Open Season.
Doctor networks and out-of-pocket costs
Each health plan has a network of doctors, clinics, and care centers. Some plans use a tight network with fewer choices. If you see a doctor who is not in the network, the plan may pay nothing at all.
To learn how plan networks affect your pay, you can read our Pay Stub Review guide. You can also search our federal health plan terminology list.
If you need a specialist, make sure they are in the network before you pick a plan. Some plans need you to get a referral from your main doctor first. Going out of network can lead to huge bills that you must pay on your own. This can wipe out any savings you got from a lower premium.
Prescription drug tiers and formularies
Health plans group drugs into tiers on a list called a formulary. Tier one has low-cost generic drugs, while tier four holds high-cost specialty drugs. If your daily medicine is moved to a higher tier, your cost will go up. Always check the drug list of a plan before you sign up.
Each year, plans can change which drugs they cover. When the new year starts, your old plan will stop paying benefits, so you must use your new plan rules. If a drug you need is not on the formulary, you may have to pay the full price. A single high-cost drug can quickly cost more than a year of plan premiums.
Mail-order rules and coverage caps
Using a mail-order pharmacy can help you save money on long-term drugs. Many plans offer a ninety-day supply of maintenance drugs for a lower copay through the mail. But you must understand the rules of your own plan. Some plans limit how much they pay for brand-name drugs each year.
These limits are called drug benefit caps, and they can catch you by surprise. If you reach the cap, you must pay all extra drug costs yourself. When you choose a plan, you must check both the network and the drug list. Taking time to review these details will help you avoid costly mistakes.
Coordinating FEHB with Medicare Part B and Part D
How does your health plan work with Medicare? When you retire, these two systems must work together. Choosing how to blend them is a key step during FEHB plan coordination. You must look at costs, coverage gaps, and rules to make the best choice.
Understanding who pays first
Which plan pays your medical bills first? It depends on your job status. If you are still working at age 65, your federal health plan is primary. This means it pays first, and Medicare pays second. But the rule changes when you retire. As a retired annuitant, Medicare often becomes the primary payer for covered services. This rule applies to you and your covered spouse once you are retired and enrolled in Medicare. You must notify your health plan at once when you enroll in Medicare so they can update your files.
When Medicare pays first, your federal plan can help pay your deductibles and copays. Some federal plans even offer a partial refund on your Part B premiums. You can check these options during the next FEHB Open Season.
Medicare Part B and late enrollment
Is enrolling in Medicare Part B a smart move? This is a major choice for federal retirees. When you turn 65, coordinating FEHB with Medicare Part B is vital to prevent gaps in coverage. It helps you maximize your total benefits and avoid paying extra fees. If you delay Part B enrollment, you may face late-enrollment penalties. This penalty increases your Part B premium by ten percent for each full year you wait. The penalty stays with you for life.
Some retirees choose to skip Part B because their federal plan already provides good coverage. But having both plans gives you double coverage, and many federal plans will then pay your doctor bills in full.
You must also consider high-income surcharges. These are called Income-Related Monthly Adjustment Amounts, or IRMAA. If your income is above a set limit, your Part B and Part D premiums will go up. This surcharge is based on tax returns from two years prior. High earners should plan for these extra costs when looking at their retirement cash flow.
Part D and creditable prescription coverage
What about prescription drugs? Most federal plans offer what is called creditable drug coverage. This means your plan's drug coverage is at least as good as Medicare Part D. Because of this, OPM confirms that you do not need to sign up for Medicare Part D when you turn 65. You will not face a penalty if you choose to join Part D later, as long as you keep your federal plan. But some federal plans now offer special Part D plans built into their benefits. These new plans may lower your out-of-pocket costs for medicine.
What Postal Employees Should Know About the PSHB Transition
Postal employees and retirees now have a health program built just for them. Under this change, staff members moved out of the general federal pool and into a system of their own. Knowing how this setup works helps you choose the best plan. You should look at all your choices before you pick a plan.
A separate insurance pool for postal staff
The PSHB program is a new branch of health coverage for postal staff. For decades, you shared plans with all federal employees. But a new law split these groups to help control rising costs across the postal system. This shift means you cannot pick standard plans from the main FEHB menu anymore.
You must now select from PSHB choices designed for postal workers. This change affects current employees and retirees alike. If you do not choose a plan during the sign-up window, the system will match you to a similar plan. But that automatic choice might not fit your health needs or your budget. Taking the time to pick your own plan is always the safest path.
Comparing your new health coverage options
Comparing these plans takes some care. The choices and costs change each year, just like they do during the standard FEHB Open Season. You must look at more than just the monthly price. Deductibles and out-of-pocket limits vary widely. Checking these details helps you avoid high bills later on.
Look closely at what each plan covers. Some plans have better copays for doctor visits, while others offer cheaper drug costs. If plan names or choices confuse you, look up federal health plan terminology to learn the basics. Finding the right fit can save you thousands of dollars each year.
Medicare Part B requirements for postal retirees
The biggest change is how PSHB links with Medicare. For most federal retirees, signing up for Medicare Part B is a choice. But under PSHB rules, future postal retirees must enroll in Part B to keep their health benefits. This is a strict rule that you must follow to preserve your coverage.
If you do not sign up for Part B when you can first do so, you could lose your health plan. When you enroll, Medicare becomes the primary payer for your doctor visits, as shown on the OPM Medicare coordination page. This helps protect your coverage and keeps your out-of-pocket costs low. It also ensures you get the full value of the benefits you earned.
How to Make the Most of Every FEHB Open Season
You must plan ahead to get the most from your health coverage. You might wonder, how long is open season? This key enrollment window runs for four weeks each fall during the official FEHB Open Season. In recent years, premium costs have gone up and some plans have left the system. Because this enrollment period is not extended, you must make your choices before the final date.
Essential rules for federal retirees
For those nearing retirement, keeping your health benefits is a top goal. What are the rules to keeping FEHB in retirement? First, you must meet the five-year rule. This rule means you need continuous coverage for the five years right before you retire. Second, you must make a survivor annuity election so your spouse can keep health coverage after you pass away. You can learn more about these rules and other federal health plan terminology through our glossary.
A step-by-step open season plan
- Review your current plan and past claims. Look at what you spent on care and drugs over the past year. This shows if your current plan still fits your needs.
- Run a GAP Analysis. Use a professional review to find out where your current health coverage falls short. This helps you avoid high out-of-pocket costs later.
- Compare plans beyond the monthly premium. Look at deductibles, co-pays, and doctor networks using the OPM plan comparison tools. Do not just pick the cheapest monthly rate.
- Check Medicare coordination if nearing 65. Determine how your plan works with Medicare Part B and Part D. You should check the OPM guidelines on Medicare primary payer rules to avoid penalties.
- Make your plan change before the deadline. Submit your choices through your agency portal or the OPM portal before the enrollment period ends. Late requests are rarely accepted.
- Confirm the January 1 effective date. Your new plan coverage and premium rates will start on the first day of the new year. Check the OPM annuitant FAQ page to see when your premium change hits your payment.
Not sure which plan fits your health needs and budget? Talk to a federal benefits specialist for a free comparison before the deadline.
Frequently Asked Questions
How long is FEHB open season?
The annual FEHB Open Season lasts for four weeks. It begins on the Monday of the second full workweek in November and ends on the Monday of the second full workweek in December. For the 2026 plan year, the enrollment window ran from November 10 to December 8, 2025, and the coming year's window will follow a similar schedule. According to the Office of Personnel Management, you must submit all plan changes before this winter deadline.
What are the changes to FEHB in 2026?
For the 2026 plan year, average premium costs will go up by about 13.5 percent. You will also have fewer choices. The total number of health plan options is down to about 130 plans. This is a big drop from previous years. According to reports on OPM plan changes, any adjustments you make will go into effect on January 1, 2026.
What are the three rules to keeping FEHB in retirement?
To keep your federal health benefits after you retire, you must meet three conditions. First, you must retire on an immediate annuity. Second, you must retire from a position that is eligible for coverage. Third, you must have continuous coverage for the five years of service right before you retire. This is known as the five-year rule, which you can read about on the Federal Benefits Exchange website.
Is open enrollment extended for 2026?
No, the annual sign-up window is not extended. It runs within the normal four-week timeframe set by the government. For the 2026 plan year, the enrollment period ends on December 8, 2025. You must make any adjustments before this deadline. You can check the exact dates and timelines on the U.S. Army Financial Management Command portal.
Ready to Compare Your FEHB Options Without Stress?
Missing the yearly deadline means you must keep your current plan for one more full year, even if its costs go up. Taking a few minutes to compare choices now helps you avoid high out-of-pocket fees and find the best fit for your retirement. Our team can help you find a plan that works with Medicare so you can keep the coverage you need. You do not have to figure out these complex options alone. We offer clear education to help you make the right choice before the window closes. You can also read our FAQ page to get quick answers about complex federal rules.
Ready to protect your benefits? Call (706) 407-2744 to schedule a free consultation.