If you and your spouse both carry a Medigap policy — or you live with an adult child, a partner, or a longtime friend — you may be quietly leaving money on the table every single month. Most people shop for Medicare Supplement coverage the same way they shop for car insurance: alone. They compare three or four plans, pick the one with the lowest premium, and never think about it again.

But Medigap has a feature that almost no other type of health insurance offers, and it rewards people who live together. It’s called a household discount, and depending on where you live and which insurer you choose, it can trim 5% to as much as 30% off your monthly premium. On a policy costing $180 a month, that’s $108 to $648 back in your pocket every year — for coverage you were already buying.

This guide walks through what household discounts are, why every Medigap policy is priced differently even when the benefits are identical, and the exact steps to capture savings you’re entitled to.

What Is a Medigap Household Discount?

A household discount — sometimes called a spousal discount, a multi-life discount, or a “live-with” credit — is a premium reduction an insurance company gives you when more than one Medigap policyholder lives at the same mailing address.

Here’s the part that surprises people: the second person does not have to be your spouse. Most major Medigap carriers accept any two adults residing at the same address, which means a widowed parent living with an adult child, two sisters sharing a home, or a couple who never married can all qualify. The insurer is simply rewarding what it considers a stable, low-risk household — two policies under one roof tend to stay on the books longer, and that predictability is worth something to them.

Typical discount tiers look like this:

• 5% — The most common baseline discount, offered by a wide range of carriers nationwide.
• 7% to 12% — Mid-tier discounts offered by regional and some national insurers, often on Plan G and Plan N.
• 15% to 30% — The most aggressive discounts, usually limited to specific states or to households where one member has held the policy for several years.

The discount is applied to each policyholder’s premium separately. If you and your spouse each pay $175 a month with a 10% household discount, you’re each paying $157.50 — a combined savings of $420 a year.

Why the Same Medigap Plan Costs Two Different Prices

Every Medicare Supplement plan is standardized by letter. A Plan G sold by one company covers exactly the same benefits as a Plan G sold by another. The benefits cannot differ. The price absolutely can — sometimes by a hundred dollars a month or more for identical coverage.

That price gap comes from three things:

1. The rating method. Insurers price Medigap policies using one of three structures. Community-rated plans charge everyone the same premium regardless of age. Issue-age-rated plans base your premium on how old you were when you enrolled, and increases are tied to inflation rather than birthdays. Attained-age-rated plans start cheapest and rise every year as you get older — they look like bargains at 65 and become the most expensive option by 80. The rating method matters more than any discount over the long haul.

2. The discount structure. Two carriers offering “a household discount” may apply it very differently. Some apply it only to the younger spouse. Some require both partners to enroll within a set window — often 30 to 90 days of each other. Some cap the discount at a dollar amount rather than a percentage. Always ask the carrier to put the discount terms in writing before you enroll.

3. Time in force. A handful of insurers quietly increase the household discount after the first policy anniversary, or after three years. If you’re comparing two plans with premiums within a few dollars of each other, ask each company what the discount looks like at year one, year three, and year five.

How to Claim a Household Discount You’re Missing

Most people don’t need to switch plans to get this discount — they just need to ask. Here’s the sequence that works:

Step 1: Call your current carrier. Ask directly: “Does this policy offer a household discount, and am I receiving it?” If your spouse or housemate has a policy with the same insurer, the answer is often yes. Companies frequently fail to apply it automatically at enrollment because the two applications were processed separately.

Step 2: Document the household. Most carriers will request proof — a driver’s license showing the same address for both parties is usually sufficient. Some ask for a utility bill or lease. Keep a copy of whatever you send.

Step 3: Know your state’s rules. A small but growing number of states — including Connecticut, Massachusetts, and Maine — either require household discounts on certain Medigap policies or restrict how carriers can underwrite. If you live in one of these states, your options and your leverage are stronger. If you’re in a state with fewer protections, the discount is purely voluntary on the insurer’s part, which is exactly why you have to ask.

Step 4: If you’re not yet enrolled, compare with the discount factored in. This is where shopping smart pays off. Two plans can have an identical headline rate but finish hundreds of dollars apart per year once the discount, the rating method, and the rate-increase history are all on the table. Never compare Medigap quotes on premium alone.

Three Traps to Watch For

The “discount” that isn’t one. A carrier can show you a household discount while its base rate sits well above the market. A 20% discount on an inflated premium can still cost more than a 7% discount on a competitive one. Always ask for the base rate before the discount is applied, then compare that number across carriers.

Underwriting on the second policy. If you’re already past your one-time Medigap Open Enrollment Period and you have health conditions, you may face medical underwriting on a new policy — and in most states, insurers aren’t required to approve you just because your spouse qualifies for a discount. If either partner has significant health history, don’t cancel an existing policy until the new one is issued and in force. In most states you have a 30-day free-look period after a new policy starts, which gives you a safety net.

The 6-month window you only get once. Your Medigap Open Enrollment Period is a one-time, six-month window that begins the month you’re 65 and enrolled in Part B. During that window you can buy any Medigap policy sold in your state with no health questions and no premium penalty for pre-existing conditions. If you’re turning 65 soon, this is the moment to shop — and to make sure both partners’ applications are submitted within whatever window the carrier requires for the household discount.

The Bottom Line: Two Policies, One Address, Real Savings

Household discounts are one of the few genuinely free wins in Medicare. You don’t change your benefits, you don’t change your doctors, and in many cases you don’t even change your carrier — you just make sure the insurer knows there are two of you under the same roof.

But the discount is only one variable. The bigger money is usually hiding in the rating method you choose and the carrier you choose. A community-rated Plan G with a modest household discount will often cost tens of thousands of dollars less over a retirement than an attained-age-rated plan with a flashier introductory price. Those comparisons take real numbers from real carriers in your ZIP code — and that’s exactly what a licensed comparison shop is for.

Ready to see what a household discount could do to your premium? Visit medigapplanfinders.com to compare Medigap plans side by side in your area, get free personalized quotes for you and your spouse, and find out whether you’re already eligible for a discount you’re not receiving. It takes about five minutes — and it could save you hundreds every year for the rest of your retirement.