How Long Should You Keep Medicare Summary Notices and Statements?
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August 16, 2026
Reviewed by Michael Davis
Medicare Agent Licensed in MN, AL, AR & 42 other states
Your mailbox fills up fast once you're on Medicare. Between Medicare Summary Notices, Explanation of Benefits forms, provider bills, and premium statements, the paper pile grows every quarter. And the question everyone asks eventually: how long do I actually need to keep this stuff?
The short answer depends on what the document is and whether you might need it later. But there are clear guidelines worth following.
Quick answer: Keep Medicare Summary Notices and EOBs for at least 1 year after the date of service. If you have an ongoing treatment, open claim, or billing dispute, hold onto them until everything is fully resolved. Tax-related Medicare documents should be kept for 7 years.
What is a Medicare Summary Notice?
A Medicare Summary Notice (MSN) is a document Medicare mails to everyone on Original Medicare (Parts A and B). It covers a 3-month period and lists every service or supply billed to Medicare on your behalf during that window.
Each MSN shows three things: what was billed, what Medicare paid, and what you may owe. It also includes the claim decision for each service.
An MSN is not a bill. This trips people up constantly. You don't owe Medicare anything based on the MSN alone. It's a record of what happened with your claims. Your actual bill comes from the provider.
If you're on a Medicare Advantage plan, you won't receive MSNs. Instead, your plan sends an Explanation of Benefits (EOB) after each claim. Same idea, different name. The retention rules below apply to both.
Why did I receive a Medicare Summary Notice, and what should I do with it?
A Medicare Summary Notice is sent when you have any claims filed on your behalf. It is an explanation of what services were and products were paid for by Medicare. It is not a bill.You should examine your MSN to make sure that the claims listed match the services you received. Check for things like services never received, duplicate billing, equipment never ordered, and suspicious providers. This helps prevent fraud and improves the Medicare system.
How long to keep Medicare statements
There's no single rule that covers every situation. But here's a practical breakdown by document type.
Medicare Summary Notices and EOBs
Keep these for at least 1 year after the date of service listed on the notice. That gives you enough time to catch billing errors, compare against provider invoices, and file an appeal if needed. Medicare allows 120 days from the date you receive an MSN to appeal a denied claim, but keeping the paperwork longer gives you a safety net.
If any of these apply, keep the MSN or EOB until the situation is fully closed:
- You're in the middle of treatment for an ongoing condition
- You've filed or plan to file a claim dispute
- A billing error hasn't been resolved yet
- You're waiting on a secondary insurer (like a Medigap plan) to process their portion
Premium payment records
Part B premiums, Part D premiums, Medigap premiums. Keep proof of payment for 1 year minimum. If you deduct medical expenses on your taxes, bump that to 7 years to match the IRS audit window.
Tax-related Medicare documents
Anything you use on your tax return (premium deductions, out-of-pocket costs for itemized medical expenses) should be kept for 7 years. The IRS can audit returns going back 3 years under normal circumstances, but that extends to 6 years if they suspect underreporting. Seven years is the safe bet.
Your Medicare card and plan enrollment documents
Keep these indefinitely. Your Medicare number, plan ID, and enrollment confirmation paperwork should always be accessible.
Why bother keeping them at all?
Three reasons.
Catching billing errors. Providers make mistakes. Duplicate charges, services billed that you never received, wrong billing codes. Your MSN or EOB is the only way to cross-check what a provider bills you against what Medicare actually processed. If a provider sends you a bill for $400 and your MSN shows Medicare already covered it, you just saved yourself $400.
Spotting Medicare fraud. Equipment you never ordered. Services from a provider you've never seen. These show up on MSNs, and reviewing them is one of the most effective ways to catch fraudulent billing. If something looks wrong, call 1-800-MEDICARE to report it.
Supporting appeals. If Medicare denies a claim you believe should be covered, your MSN contains the information you need to start the appeals process. Without it, you're working from memory.
A simple system for organizing Medicare paperwork
You don't need anything fancy. A folder, a binder, or a shoebox. The goal is knowing where to find something when you need it.
Licensed agents recommend keeping one dedicated folder or binder for all Medicare documents, sorted by year. Within each year, separate your MSNs/EOBs from actual provider bills. When a bill arrives, match it against your most recent MSN before paying.
I'm caring for my dad who has Alzheimer's with lots of medications and I keep getting bills I don't understand. Any tips for not drowning in paperwork?
Caring for a loved one with Alzheimer's is hard enough without trying to sort through piles of medical paperwork. I usually recommend keeping one folder or binder for all Medicare Summary Notices, prescription receipts, and provider bills, then comparing each bill to the Medicare Summary Notice before paying it. If something doesn't make sense, don't be afraid to call the provider's billing office or your Medicare plan and ask them to explain it—catching billing errors early can save a lot of headaches.A few tips that make this easier:
- Go digital. You can view and download MSNs through your Medicare.gov account. If you lose a paper copy, you can pull up to three years of MSNs from your secure account online. That cuts the paper clutter and gives you a searchable backup.
- Compare before you pay. Never pay a provider bill without checking it against your MSN or EOB first. If the numbers don't match, call the provider's billing office.
- Set a calendar reminder. MSNs arrive quarterly. When one shows up, spend 10 minutes reviewing it. That's less than an hour a year for real peace of mind.
- Shred old documents on a schedule. Once a year, go through your files. Anything past the retention window (and not tied to open issues) can be shredded.
When to shred and when to hold
Here's a quick reference.
| Document type | Keep for | Notes |
|---|---|---|
| Medicare Summary Notice (MSN) | 1+ year after date of service | Longer if dispute or ongoing treatment |
| Explanation of Benefits (EOB) | 1+ year after date of service | Same rules as MSN |
| Provider bills (paid) | 1 year after payment | 7 years if claimed on taxes |
| Premium payment records | 1 year (7 if tax-deducted) | Part B, Part D, Medigap premiums |
| Tax-related Medicare docs | 7 years | Matches IRS audit window |
| Medicare card & enrollment docs | Indefinitely | Always keep accessible |
When you do shred, use an actual shredder. Medicare documents contain your Medicare number, dates of birth, provider information, and claim details. Tossing them in the recycling bin is a mistake worth avoiding.
Bottom line
One year is the minimum for most Medicare paperwork. Seven years for anything tax-related. Indefinitely for enrollment documents and your Medicare card. And if there's an open dispute, active treatment, or unresolved claim, keep everything until it's settled.
Build a simple filing system, review your MSNs when they arrive, and shred on a schedule. It takes minimal effort and protects you from billing errors, fraud, and lost appeals.