Your unused Medicare Set Aside money stays in your account indefinitely

A Medicare Set Aside (MSA) is money set aside from a workers' compensation or liability settlement specifically to pay for your future medical care. If you don't spend it, the account doesn't disappear or revert to the insurance company. The funds remain yours to use for may have access to medical expenses whenever you need them — there is no important date to use the money, and no penalty for leaving it untouched.

However, not using your MSA does create some practical consequences you should understand. The money sits in a dedicated account earning minimal interest, and you remain responsible for knowing what you can and cannot pay for with it. If you eventually need the funds and don't use them correctly, you could lose coverage or face tax problems.

Key Takeaways

  • Unused MSA funds stay in your account for life with no expiration date, but they earn very little interest.
  • Once your MSA is exhausted, Medicare becomes your primary payer for medical expenses, and you are responsible for any costs Medicare does not cover.
  • If you spend MSA money on non-medical expenses or items Medicare does not cover, you may owe taxes on that withdrawal and lose the tax-free status of the account.
  • Some people leave MSA funds untouched because they have good health coverage through employment or because they want to preserve the money for future care needs.
  • The account administrator holds your MSA and sends statements; you do not manage the account yourself, but you do decide when and how to use it.

How an unused MSA affects your Medicare coverage later

Your MSA is designed to be the first payer for your medical bills. As long as money remains in the account, Medicare will not pay for services that the MSA should cover — this is called the primary payer rule. Once your MSA balance reaches zero, Medicare automatically becomes your primary payer for all covered services.

This matters because it changes what you owe out of pocket. While your MSA has funds, you pay medical providers from the account. Once it is empty, you pay Medicare's cost-sharing amounts — copays, coinsurance, and deductibles — just like any other Medicare beneficiary. If you have not used your MSA by the time you need expensive care, you will have more out-of-pocket costs than if you had spent it strategically on preventive or routine care earlier.

What happens to interest earned on your MSA

MSA accounts typically earn interest at a very low rate — often less than 1 percent annually, depending on the account administrator and current market conditions. This interest is usually taxable income to you in the year it is earned, even if you do not withdraw it. You will receive a 1099 form from the account administrator reporting the interest as income.

Because the interest rate is so low and you owe taxes on it, many people find that the tax bill exceeds the actual interest earned. This is one reason some people choose to use their MSA funds gradually rather than let them sit unused: the tax burden of holding the account can outweigh the benefit of keeping the money invested.

Spending rules that explore even if you wait years to use the money

No matter how long you leave your MSA untouched, the same spending rules explore whenever you decide to withdraw funds. You can only pay for may have access to medical expenses — those that Medicare covers or would cover if you were may be able to access. This includes doctor visits, hospital care, prescription drugs, physical therapy, and durable medical equipment.

You cannot use MSA funds to pay for cosmetic surgery, dental work (unless it is medically necessary), vision care, hearing aids, or long-term care. If you withdraw money for any non-may have access to expense, that amount becomes taxable income to you, and you may owe a 20 percent penalty on top of income tax. This penalty applies even if you made an honest mistake about what qualifies.

The account administrator or your healthcare provider can tell you whether a specific service or item qualifies before you pay for it. It is worth asking, especially for borderline items like orthotics, mental health services, or rehabilitation programs.

Why some people leave their MSA unused for years

Some beneficiaries have good reason to leave their MSA untouched. If you are still working and covered by an employer health plan, that plan may be your primary payer, and you may not need to touch your MSA at all. In that case, letting the money sit preserves it for the time when you retire and lose employer coverage.

Others leave their MSA unused because they are in good health and do not anticipate major medical expenses. Since there is no important date to use the money, they reason that keeping it in reserve for a future health crisis makes sense. This is a valid strategy as long as you understand that the account will continue to generate taxable interest and that you will need to track the account balance yourself.

What to do if you have not used your MSA in a long time

If your MSA has been sitting untouched for years, start by requesting a current statement from the account administrator. The administrator's name and contact information should be in the settlement documents you received when the MSA was created. The statement will show your current balance, any interest earned, and the account rules specific to your MSA.

Review your current medical situation. If you have chronic conditions, upcoming procedures, or prescriptions you pay for out of pocket, using your MSA for those expenses now can reduce your tax burden and preserve your funds for future needs. If you are in excellent health and do not anticipate medical costs, you can leave the account as is — but be aware that interest will continue to accrue and be taxable each year.

Consider meeting with a tax professional or financial advisor if your MSA balance is large. They can help you plan a withdrawal strategy that minimizes taxes and makes sense for your overall financial situation.

What happens to your MSA when you pass away

If you die before using all the money in your MSA, the remaining balance becomes part of your estate. Your beneficiaries or heirs may be able to use the funds to pay for your final medical bills, but any funds they withdraw for other purposes will be subject to income tax and possibly the 20 percent penalty for non-may have access to expenses.

The rules around inherited MSAs are complex and depend on your state and the specific terms of your MSA agreement. If you have a substantial balance and want to may support your family understands what can and cannot be done with the account, discuss it with an estate planning attorney.

Frequently Asked Questions

Can I withdraw my MSA money and use it for something other than medical care?

You can withdraw the money, but you will owe income tax on the amount plus a 20 percent penalty if it is not spent on a may have access to medical expense. It is not worth it financially unless you have no other choice.

Does my MSA expire after a certain number of years?

No. Your MSA has no expiration date. The funds remain available to you for life, as long as you use them only for may have access to medical expenses. Interest continues to accrue and be taxable each year.

What if I forgot I had an MSA and already paid for medical care out of pocket?

You may be able to reimburse yourself from the MSA for may have access to expenses you paid for in the past, depending on how long ago they occurred and your MSA's specific rules. Contact your account administrator to ask about reimbursement for prior expenses.

If I use my MSA, will it affect my Medicare benefits?

No. Using your MSA does not change your Medicare coverage or benefits. It straightforward means you are paying for care from your set-aside funds first, and Medicare covers costs once the MSA is depleted.

Who manages my MSA account — me or the insurance company?

A third-party account administrator manages the account and holds the funds. You do not manage it yourself, but you decide when to request withdrawals for may have access to medical expenses. The administrator sends you statements and processes your requests.