You have a spare room, and you have been thinking about sharing it. The rent would help. Then a quieter worry comes up: "What if it costs me my Medicaid?" Or your daughter asks it for you. That question deserves a real answer, and the best way to get one is to sit down with the numbers and someone you trust, an adult child, a friend, a neighbor, and look at them together.
Why two people at the table helps
Benefit rules are written in a language of their own. A second person can read the fine print while you answer the questions, find the right line on a statement, and remember what you learned when you are on the phone with a benefits office next week.
It also helps the people who worry about you. A family that has seen the numbers for itself usually worries less than one that has only heard about them. And if the numbers say the rent is not worth what a benefit would lose, you will both know it, and nobody has to argue about it.
One thing to settle before you start: the person helping you is there to help you see, not to decide. It is your home and your income. Say that out loud, kindly, at the beginning. It makes the rest of the conversation easier for everyone.
What to bring to the table
The tool asks for a few numbers. Having these papers on hand turns guesses into answers.
Your Social Security letter. The yearly letter from Social Security shows your monthly benefit before Medicare is taken out. The tool asks for that amount.
Your mortgage statement, if you still have a mortgage. It splits your monthly payment into principal and interest. Or use Box 1 of the Form 1098 your lender sends each January, which shows the interest you paid last year, and divide it by 12.
Statements for any other income: a pension, or withdrawals from a retirement account.
Your benefit letters: anything from Medicaid, SNAP, energy assistance, a property tax relief program, or the program that helps pay your Medicare premium. The tool asks which of these you get.
A count of your rooms. Every room except bathrooms: bedrooms, living room, kitchen, dining room. Count a basement or attic only if it is finished living space. Some benefits use this number to figure the shared room's part of your home costs.
If you cannot find a mortgage figure, the tool can use a typical amount for your state. If you leave out your interest, it counts none, which shows the most your benefits could change.
Walking through it, step by step
Step 1: Tell it about you. Your state, who lives with you now, whether your home is paid off, your income, and which benefits you get. Do not count the person who would share your home. If other family members live with you, your results could be different, and a benefits counselor can tell you how.
Step 2: Choose what to charge. The tool shows four amounts for a room in your state, from an income-restricted rent to the typical market rate. You decide what to charge. The tool never recommends a rent. Tap each amount and watch what changes. This is the part worth slowing down for. Ask each other: what would we keep at each amount? What would it mean for the person who moves in?
Step 3: See what could change. For each benefit you checked, the tool shows what could happen at the amount you picked, and it estimates your federal income tax. Open "How your state counts home sharing income" to see the rule behind each result.
Your answers stay on the page. Nothing is saved or sent anywhere, so you can try different amounts as many times as you like.
Questions to ask each other
- Which benefit matters most to us? Which one would be hardest to lose?
- Is there an amount where the rent clearly helps more than it costs?
- If a benefit would go down, by how much, and what does the rent bring in on top of that?
- What do we still not know? Who would know?
Write the answers down, with the date. When you call a benefits office, you will know exactly what to ask.
What to do with what you find
Take the results to someone who knows the rules where you live. The tool is general information, not advice. Your State Health Insurance Assistance Program (SHIP) gives free help with Medicare and Medicaid questions. Your Area Agency on Aging can connect you with a benefits counselor; call the Eldercare Locator at 1-800-677-1116 to find yours. Bring your notes.
Ask each benefits office directly. "If I receive this much rent for one room, how would you count it? What about at a lower rent?" Ask for the answer in writing.
Ask about taxes if your income is higher. Most older adults with modest incomes owe no federal income tax either way. If the tool flags a tax change, or your income is near a limit, a tax preparer can help. Our post Your Check Stays the Same explains how rent and Social Security meet at tax time.
Keeping the decision yours
When the numbers are clear, the decision is still a personal one. Rent is only part of it. Company, security at night, help with the gutters, and how you feel about another person in the kitchen in the morning all count too.
A few things you might say, if they help:
- "Thank you for helping me look at this. I'd like a day to think about it."
- "The numbers work. Now I want to think about whether I want someone living here."
- "The numbers don't work for me right now, and I'm comfortable with that."
Any of those is a good outcome. The point of doing the numbers together is not to reach a yes. It is to make sure that whatever you decide, you decide it with the facts in front of you and the people who care about you beside you.
Read next
Your Check Stays the Same. What renting a room does, and does not do, to Social Security.
When Your Family Worries. How to hear your family's concerns, answer them, and make the decision together.
Sources
- What the tool asks and how it figures results: HomeShare Oregon, Home Sharing and Your Benefits, 2026. Home costs come from the Elder Index budget for an older homeowner in each state (Gerontology Institute, University of Massachusetts Boston, 2025). Room amounts from HUD FY2026 Fair Market Rents, 50th percentile rents, and Multifamily Tax Subsidy Project income limits.
- State rules for SSI, Medicaid, help paying for Medicare, SNAP, energy assistance and property tax relief: each state's manuals, rules and plans, as listed on the tool's page.
This is general information, not tax or benefits advice. Before you decide, talk with a benefits counselor or a tax professional.