How to Choose a Medicare Supplement Insurance Company 2026: Insurer Comparison Checklist
How to Choose a Medicare Supplement Insurance Company 2026: Insurer Comparison Checklist
All Medigap Plan G policies cover the same benefits—but the insurance company you choose affects your premium, rate increases, and customer experience for years. This checklist helps you evaluate and compare insurers before enrolling.
Quick Answer
Choose an insurer based on these 5 factors:
| Factor | What to Check | Target |
|---|---|---|
| Financial Stability | A.M. Best rating | A- or higher |
| Rate Increase History | 5-year average annual increase | 5% or less |
| Starting Premium | Quote for your age/state/plan | Competitive vs. others |
| Pricing Method | Attained-age vs. issue-age vs. community | Issue-age or community preferred |
| Customer Service | Complaint ratios, claims processing | Below state average complaints |
Use our Medicare Supplement Penalty Calculator to compare premium estimates across plans before choosing an insurer.
Why Insurer Choice Matters
Same Plan Letter, Different Outcomes:
| Scenario | Company A | Company B |
|---|---|---|
| Plan G premium at 65 | $120/month | $145/month |
| Annual rate increase | 4% | 8% |
| Premium at age 75 | $178/month | $313/month |
| 10-year total cost | $19,200 | $27,500 |
Company A saves you $8,300 over 10 years—even though Company B looked competitive initially.
2026 Insurer Evaluation Checklist
1. Financial Stability
A financially stable company is more likely to:
- Pay claims without delays
- Remain in business for decades
- Avoid sharp rate increases due to claims losses
How to Check:
- Look up A.M. Best rating (free at ambest.com)
- Target rating: A- or higher (A++, A+, A, A- are all acceptable)
- Check Weiss Ratings as a secondary source
- Avoid companies rated B+ or lower
Red Flags:
- Recent downgrades
- Multiple name changes (may indicate prior insolvency)
- Very new companies (less than 10 years in Medigap)
2. Rate Increase History
Past rate increases are the best predictor of future increases.
Questions to Ask:
- “What is your average annual rate increase for Plan [G/N] over the past 5 years?”
- “What was last year’s increase for this plan in my state?”
- “Do you have any planned rate increases in the next 12 months?”
Rate Increase Benchmarks:
| Average Annual Increase | Assessment |
|---|---|
| 3% or less | Excellent |
| 3-5% | Good |
| 5-7% | Average |
| 7-10% | Above average (caution) |
| Over 10% | High (avoid if possible) |
Read our Medicare Supplement Annual Rate Increase Estimator guide for detailed analysis.
3. Pricing Method
Insurance companies use one of three pricing methods:
Attained-Age Rated:
- Premiums increase as you get older
- Often start low but increase rapidly
- Most common pricing method
- Example: Premium at 65 = $100, at 75 = $180+
Issue-Age Rated:
- Premium based on your age when you enroll
- Increases only for inflation and claims experience
- Higher starting premium, lower long-term cost
- Example: Premium at 65 = $130, at 75 = $160
Community-Rated:
- Everyone pays the same base premium regardless of age
- Premiums increase only for inflation
- Best long-term value if you enroll young
- Example: Premium at 65 = $140, at 75 = $155
Recommendation: If you plan to keep your Medigap policy for 10+ years, issue-age or community-rated policies often cost less over time.
4. Starting Premium
Get quotes from at least 3-5 insurers for the exact same plan letter.
Tips:
- Compare identical plans (Plan G vs Plan G, not G vs N)
- Ensure quotes include tobacco rating if applicable
- Ask about household discounts (typically 5-14%)
- Request annual payment discount (if available)
- Confirm the premium is guaranteed for 12 months
Use our Medicare Supplement Plan Cost Estimator to understand what factors affect your premium.
5. Customer Service Quality
Complaint Ratio Check:
- Visit your state insurance department website
- Search for Medigap complaint ratios by company
- Target: Below-average complaint ratio
- Avoid companies with multiple complaints about claims delays
Customer Service Indicators:
- Local agent availability vs. call center only
- Online portal for claims and policy management
- 24/7 customer service hours
- Clear communication about rate increases
6. Claims Processing
Questions to Ask:
- “How are claims processed—automatically or do I submit paperwork?”
- “What is the average claims processing time?”
- “Do you direct-bill providers or do I pay and get reimbursed?”
Ideal Scenario: Claims cross over automatically from Medicare. You rarely handle paperwork.
7. Additional Factors
Household Discount:
- Typically 5-14% if spouse enrolls
- Ask: “What is your household discount and when does it apply?”
Payment Options:
- Monthly, quarterly, semi-annual, annual
- Automatic bank draft discount
- Credit card payment availability
Provider Network:
- Medigap works with any Medicare-participating provider
- No network restrictions (unlike Medicare Advantage)
- Confirm this if an agent claims otherwise
Insurer Comparison Worksheet
Use this template when comparing quotes:
| Factor | Company A | Company B | Company C |
|---|---|---|---|
| Plan Letter | ___ | ___ | ___ |
| Monthly Premium | $___ | $___ | $___ |
| Pricing Method | ___ | ___ | ___ |
| A.M. Best Rating | ___ | ___ | ___ |
| 5-Yr Avg Rate Increase | ___% | ___% | ___% |
| Household Discount | ___% | ___% | ___% |
| Complaint Ratio | ___ | ___ | ___ |
| Score (1-5) | ___ | ___ | ___ |
Frequently Asked Questions
Does it matter which insurance company I choose for Medigap?
Yes. While all Medigap plans with the same letter offer identical benefits, premiums and rate increase history vary significantly. Choosing a stable company with lower annual increases can save thousands over time.
What is the best Medicare Supplement insurance company?
There is no single “best” company. Compare at least 3-5 insurers for your specific plan letter, age, and state. Key factors: financial stability (A.M. Best rating A or higher), low rate increase history, competitive starting premium, and responsive customer service.
How do I check an insurance company’s rate increase history?
Ask the agent for the company’s average annual rate increase percentage over the past 5 years. Also request your specific plan’s rate increase history. Well-run insurers typically average 3-5% annually; some exceed 10%.
What’s the difference between attained-age, issue-age, and community-rated pricing?
Attained-age: premiums increase as you age. Issue-age: premiums based on age at enrollment, increase only for inflation. Community-rated: everyone pays same base premium regardless of age. Issue-age and community-rated often cost less long-term.
Can I switch Medigap companies later?
You can apply to switch anytime, but outside your Medigap Open Enrollment or guaranteed issue situations, you may face medical underwriting. Some states (CT, ME, MA, NY, VT) have year-round guaranteed issue rights. See our Medigap Guaranteed Issue Rights by State guide.
Should I choose the company with the lowest premium?
Not necessarily. A slightly higher premium from a stable company with low rate increases often costs less over 10+ years than a cheaper premium from a company with aggressive rate hikes. Always check rate increase history.
Do all insurance companies offer all Medigap plans?
No. Companies choose which plans to offer. Plan A must be offered if they offer any Medigap. Most companies offer Plan G and Plan N (the most popular). Plan F is only available if you were eligible before January 1, 2020.
Internal Resources
- Medicare Supplement Penalty Calculator
- Medicare Supplement Plan Cost Estimator
- Medicare Supplement Annual Rate Increase Estimator
- Medigap Guaranteed Issue Rights by State
- Best Time to Buy a Medigap Policy
- Medigap Late Enrollment Penalty Calculator
Disclaimer
This guide is for educational purposes only and does not constitute insurance, legal, or financial advice. Medicare rules, premiums, and company ratings change over time. Always verify information with Medicare.gov, your State Health Insurance Assistance Program (SHIP), state insurance department, and licensed insurance agents before making enrollment decisions.