Medicare Supplement Contracting: What New Agents Need to Know

Medicare Supplement, often called Medigap, is one of the more approachable product lines for new independent agents to break into, especially compared to Medicare Advantage, which comes with heavier annual certification requirements. But “approachable” doesn’t mean simple. If you’re getting contracted to sell Medicare Supplement plans for the first time, here’s what you actually need to understand before you take your first appointment.

What Makes Medicare Supplement Different from Medicare Advantage

Medicare Supplement plans work alongside Original Medicare, covering the gaps in cost-sharing (deductibles, coinsurance, copays) that Original Medicare leaves the beneficiary responsible for. Unlike Medicare Advantage, Medigap plans:

• Are standardized by letter plan (Plan G, Plan N, and so on), meaning the benefits are federally defined and identical across carriers offering the same letter plan in most states
• Don’t require annual AHIP certification the way Medicare Advantage and Part D plans do
• Aren’t tied to the Annual Enrollment Period: Medigap can be sold and underwritten year-round, outside of a beneficiary’s initial Medigap Open Enrollment window

Because the benefits are standardized, competition between carriers on Medigap comes down to price, underwriting flexibility, financial strength, and, for you as the agent, commission and service.

Getting Contracted: The Basic Requirements

To sell Medicare Supplement plans, you’ll need:

1. An active state health insurance license. The same resident producer license that covers other health lines typically covers Medigap.
2. Carrier-specific contracting. Each Medigap carrier you want to represent requires its own appointment, usually done through an FMO to speed up the process and access better starting terms.
3. E&O insurance, as required by most carriers before you can start writing business.
4. Carrier product training, which is generally lighter than AHIP but still required. Most carriers have a short certification module specific to their Medigap products.

Unlike Medicare Advantage, there’s no industry-wide AHIP certification requirement for Medigap, which is one reason many new Medicare-focused agents start here before layering in MA and Part D contracts.

Understanding Medigap Underwriting

This is the part that trips up agents coming from other product lines. Outside of specific guaranteed-issue situations, Medigap plans are medically underwritten. That means:

• During a client’s Medigap Open Enrollment Period (the six months starting when they’re 65+ and enrolled in Medicare Part B), they have guaranteed issue rights: no health questions, no denials, no rate-ups.
• Outside that window, applicants generally have to answer health questions, and carriers can decline coverage or charge a higher rate based on health status, depending on state rules.
• Certain situations, such as losing employer coverage, a Medicare Advantage plan leaving the area, or moving out of a plan’s service area, trigger separate guaranteed issue rights regardless of timing.

A few states (California, Missouri, and others) have additional guaranteed-issue rules, like “birthday rules” that let policyholders switch plans annually without underwriting. Know your state’s specific rules before you start prospecting, because they materially affect what you can promise a client.

How Medicare Supplement Commission Works

Medigap commissions are regulated differently than Medicare Advantage commissions: there’s no CMS-mandated flat fair market value cap the way there is for MA and Part D. Instead, commission levels vary by carrier and are typically structured as:

• A first-year commission, paid as a percentage of the annual premium
• A renewal commission, paid in subsequent years as long as the policy remains in force, often at the same percentage as first-year in many Medigap contracts, which is part of what makes Medigap attractive for building durable renewal income

Because standardized plans mean less product differentiation, the FMO relationship matters even more here: access to multiple competitive carriers lets you shop rate and underwriting flexibility for each client rather than being tied to a single carrier’s pricing.

Building a Medigap Book: What Success Looks Like

Because Medigap isn’t confined to AEP, successful Medigap agents often build steady, year-round production by:

• Prospecting clients turning 65 and entering their Medigap Open Enrollment window
• Working with clients who are aging out of employer coverage
• Offering rate re-shops for existing Medigap clients when a more competitively priced carrier becomes available
• Pairing Medigap with a standalone Part D prescription drug plan, since Medigap doesn’t include drug coverage

This pairing is worth underlining: virtually every Medigap client also needs a separate Part D plan, which means every Medigap sale is really two enrollment opportunities if you’re appropriately licensed and appointed for both.

Common Mistakes New Medigap Agents Make

• Not knowing state-specific underwriting rules, leading to promises you can’t keep to a client outside guaranteed issue.
• Only contracting with one carrier, which limits your ability to shop rate and underwriting flexibility for clients who don’t fit a single carrier’s risk appetite.
• Ignoring Part D entirely, leaving money and client value on the table.
• Underestimating renewal value. Medigap’s renewal-heavy commission structure rewards agents who think in years, not just first-year commission checks.

Get Contracted with Multiple Medigap Carriers

Medicare Supplement is one of the more durable, relationship-driven product lines in this business, and having access to multiple competitive carriers is what lets you actually serve clients well instead of pushing whatever single product you happen to be appointed for. Broker’s Broker can get you contracted quickly with a strong lineup of Medicare Supplement carriers, alongside the training and underwriting support to get your first cases right. Reach out to Broker’s Broker to get started on your Medigap contracting.