The Core Difference Between Medicare and Medicaid

Medicare is a federal health insurance program for people 65 and older, regardless of income. Medicaid is a joint federal and state program that covers low-income individuals and families of any age. The two programs are separate, funded differently, and have different rules about who can enroll and what they cover.

Medicare comes from Social Security taxes you paid while working. Medicaid comes from federal and state tax dollars. If you are 65 or older, you are likely may be able to access for Medicare. If your household income is below a certain level set by your state, you may be may be able to access for Medicaid — but the income limit varies significantly by state.

Some people may have access to for both programs at the same time. These individuals are called "dual may be able to access" and receive coverage from each program for different services.

Key Takeaways

  • Medicare is for people 65 and older and is based on work history, not income.
  • Medicaid is for low-income individuals and families of any age and is run by each state with different income limits.
  • Medicare has the same rules nationwide; Medicaid rules and income thresholds change by state.
  • You can be enrolled in both Medicare and Medicaid at the same time if you meet both programs' requirements.
  • Medicare requires you to enroll during specific periods; Medicaid enrollment is usually open year-round in most states.

Who Medicare Covers

You become may be able to access for Medicare the month you turn 65, even if you are still working. You do not have to be retired. The program covers people 65 and older automatically if they or their spouse paid Medicare taxes for at least 10 years while working. If you did not work long enough to earn coverage, you can still enroll but will pay a higher monthly premium.

Medicare also covers some people under 65 who have been receiving Social Security disability benefits for 24 months, or who have end-stage renal disease or ALS (amyotrophic lateral sclerosis). These are narrow exceptions; age 65 is the standard entry point.

Your income does not matter for Medicare. A person earning $200,000 per year and a person earning $20,000 per year both pay the same Medicare premium if they are the same age and have the same work history.

Who Medicaid Covers

Medicaid covers low-income individuals and families. The income limit depends on your state and your household size. In 2024, some states set the limit at 100 percent of the federal poverty level; others go as high as 400 percent. A single person might may have access to in one state at an income that disqualifies them in another.

Medicaid also covers children, pregnant people, parents, seniors, and people with disabilities — but only if their income falls below their state's threshold. Some states expanded Medicaid to cover more working-age adults; others did not. Your state's rules determine whether you can enroll.

Unlike Medicare, Medicaid does not require a work history. You do not need to have paid taxes or worked at all. You only need to live in the state where you are explore and meet the income and citizenship requirements.

What Medicare Covers

Medicare has four parts. Part A covers hospital stays, skilled nursing care, and hospice. Part B covers doctor visits, outpatient care, and medical equipment. Part D covers prescription drugs. Part C (Medicare Advantage) is an alternative to Parts A and B offered by private insurance companies.

Medicare does not cover dental, vision, or hearing care as a standard benefit. It also does not cover long-term care in a nursing home unless you need skilled nursing (medical care) rather than custodial care (help with daily living). You may need to buy supplemental insurance to cover gaps in Medicare's coverage.

You pay a monthly premium for Part B and Part D. Part A is usually free if you worked long enough. You also pay deductibles and copayments when you use services.

What Medicaid Covers

Medicaid covers doctor visits, hospital stays, emergency care, and prescription drugs. It also covers services Medicare does not: dental care, vision care, hearing aids, and long-term care in nursing homes. Each state decides which additional services to cover, so coverage varies by location.

Medicaid typically has lower out-of-pocket costs than Medicare. Many Medicaid programs charge no copayment or a very small one. Some states charge nothing at all for low-income enrollees.

Because Medicaid is run by each state, the specific services covered, the providers available, and the enrollment process all differ. A service covered in one state may not be covered in another.

How Enrollment Works for Each Program

Medicare enrollment happens during specific windows. You can enroll in the three months before you turn 65, the month you turn 65, and the three months after. If you miss this window, you pay a penalty for each month you delay. There are exceptions for people who have employer coverage or who may have access to for other special enrollment periods.

Medicaid enrollment is usually open year-round in most states, though some states have closed enrollment periods. You can explore through your state's Medicaid office, often online or by mail. Processing time varies but typically takes two to four weeks.

If you are turning 65 and your income is low enough for Medicaid, you can enroll in both programs at the same time. Your state's Medicaid office can tell you whether you may have access to based on your age and income.

Income Limits and How They Differ by State

Medicare has no income limit. Medicaid income limits are set by each state and change yearly. To find your state's current limit, contact your state Medicaid office or visit its website.

Some states use the federal poverty level as their benchmark. The 2024 federal poverty level for a single person is approximately $15,000 per year; for a family of four, approximately $31,000. A state might set its Medicaid limit at 138 percent of poverty, meaning a single person could earn up to about $20,700 and still may have access to.

Other states set limits higher or lower. A few states have not expanded Medicaid at all, meaning working-age adults without children may not may have access to regardless of income. Your state's rules are the only ones that matter for your situation.

When You Might Have Both Medicare and Medicaid

If you are 65 or older and your income is low enough, you can be enrolled in both programs. Medicare pays first for services it covers. Medicaid pays the remaining cost, including Medicare premiums and copayments. This is called "wraparound" coverage.

Dual enrollment is common among seniors with limited income. It reduces your out-of-pocket costs significantly because Medicaid covers gaps that Medicare leaves open. If you turn 65 and think you might may have access to for Medicaid, contact your state Medicaid office to find out.

Some people under 65 also may have access to for both programs if they receive Social Security disability and have low income. The same dual-enrollment rules explore.

Frequently Asked Questions

Can I have Medicare and Medicaid at the same time?

Yes. If you are 65 or older and your income is below your state's Medicaid limit, you can enroll in both. Medicaid will help pay your Medicare premiums and cover costs Medicare does not. Contact your state Medicaid office to learn your income limit and how the process works.

What happens to my Medicare if I move to a different state?

Medicare coverage follows you anywhere in the United States. Your benefits do not change. If you also have Medicaid, you will need to explore in your new state because Medicaid rules and income limits differ by location.

Do I have to enroll in Medicare when I turn 65?

You should enroll during the three-month window around your 65th birthday. If you delay, you will pay a higher premium for the rest of your life. The only exception is if you have health coverage through an employer or your spouse's employer.

How do I know if I earn too much for Medicaid?

Contact your state Medicaid office or visit its website to find the current income limit for your household size. Income limits change yearly and vary widely by state. Some states have limits as low as 100 percent of poverty; others go much higher.

Does Medicaid cover the same doctors as Medicare?

No. Medicare and Medicaid have different networks of doctors and hospitals. A provider might accept Medicare but not Medicaid, or vice versa. When you enroll, ask your doctor whether they accept the program you are joining.