Paying for Mom's Care? Four Tax Questions Before You File

Daniela pays her mother's rent every month. She also covers a share of Rosa's medicine, and in January she will sit across from a tax preparer who asks one simple question: "Can you claim her?" Daniela has no idea. She has never looked, and nobody told her there was anything to look at. Four questions decide whether any of what you spend on a parent ever shows up on your return. They take an evening to answer, and the answers can change what you owe.

Question One: Does She Count as Your Qualifying Relative?

The IRS calls the person you support a qualifying relative, and she has to pass four tests. She can't be the qualifying child of anyone. She has to be related to you in a listed way, and a parent always is, even if she lives in another house. Her gross income has to be below $5,300 for 2026 (IRS Rev. Proc. 2025-32). And you have to provide more than half of her total support for the year (IRS Publication 501).

Two details surprise people. First, gross income counts taxable Social Security, but not Social Security that isn't taxable. Second, the support test adds up everything that kept her going, including what she paid herself. Rent counts at its fair rental value, and the medical care you pay for counts too.

Here is Rosa's year, as an example. Her rent is $10,800, food $4,200, utilities and phone $2,400, medicine and doctors $3,600 and everything else $1,200. That is $22,200. Rosa spends $10,200 of her own Social Security on food, utilities, most of her medicine and the rest. Daniela pays the other $12,000, the rent plus $1,200 of the medicine, which is 54% of the total. She passes the support test. Her Social Security isn't taxable at her income, so the only income that counts is $400 of bank interest, and she passes the income test too.

If your mother lives in Mexico or Canada, she can still count. The IRS accepts a relative who is a resident of Canada or Mexico, and you'll need her Social Security number or an ITIN for the return.

Question Two: What If No One Pays Half?

Three siblings sending money for the same mother is common, and it often means no single child reaches the halfway mark. The IRS has a way through. Together, you can pay more than half, and one of you who pays more than 10% claims her. The others each sign a statement agreeing not to. Form 2120 is the IRS's form for this.

If Daniela pays 45% and her brother pays 35%, either one can claim Rosa, as long as the other signs. Two siblings who each pay 10% can't. Have this conversation before the new year, so nobody finds out in April that two of you claimed the same person. One catch to know about: a parent you claim only through this agreement doesn't make you eligible for head of household, which comes up in Question Four.

Question Three: Can Her Medical Bills Reach Your Return?

You can deduct medical and dental bills only above 7.5% of your adjusted gross income, and only if you itemize on Schedule A (IRS Publication 502). With $60,000 of income, the first $4,500 doesn't count. For most years that floor swallows what you spend. It matters in the year of a big bill: hearing aids, dental work, home care or a nursing home.

The good news is how far the rule reaches. You can include what you pay for a parent who would have been your qualifying relative except that her income went over the limit. So a mother with a pension that pushes her above $5,300 can still have her medical bills deducted on your return, if you provide more than half of her support. The IRS also lets you include the cost of medical care in a nursing home, and long-term care services when a licensed health care practitioner has certified that she is chronically ill.

Question Four: Does Helping Her Change How You File?

If she passes Question One, two of these can open up, and the third has no income test.

• The $500 credit. The IRS calls it the credit for other dependents, and it is $500 for each qualifying relative. It shrinks for higher incomes. It has its own, narrower residency rule, so a parent who lives in Mexico may not qualify for this one even when she counts for the other questions.
• Head of household. If you are unmarried, claim her, and pay more than half of what it costs to keep up her main home, you can file as head of household, even if she lives in her own place. Rent, utilities and food eaten at home count. In 2026 the head of household standard deduction is $24,150, against $16,100 for a single filer (IRS 2026 inflation adjustments). Daniela pays the $10,800 rent and Rosa pays the other $6,600 for utilities and food, so Daniela covers about 62% of the $17,400 it costs to keep up Rosa's apartment.
• A care credit, if she lives with you. When your mother shares your home for more than half the year, can't care for herself, and you pay for care so that you can work, such as an adult day program, you may qualify for the child and dependent care credit. The $5,300 income limit does not apply to this credit, so a mother whose pension is higher can still count, as long as you provide more than half of her support. Up to $3,000 of expenses count for one person, and for 2026 the credit is 50% of those expenses at the lowest incomes, falling to 35% for most middle incomes (26 U.S.C. § 21). At 35%, that is up to $1,050. If your job offers a care account, 2026 is the first year it can hold up to $7,500 (IRS Publication 15-B). Dollars that go through that account can't also count for the credit.

What to Keep in a Folder

Before December 31, put these in one place:

• A list of what each person paid. Rent, food, medicine and utilities, by month, for you and for her.
• Her income papers. Social Security statement, pension and interest.
• The receipts for medical bills you paid, with dates.
• Her Social Security number or ITIN, and her address.
• A signed note from each sibling if you share the support.

Where to Start This Week

Sit down with your mother, and ask her with respect what she spends in a month and what comes in. Write it beside what you pay. See where the numbers land in the WiseNest demo, or meet the Familia plan to share the list with your brothers and sisters. This is general education, not tax, legal or financial advice. Tax rules turn on your family's facts, so bring this folder to a tax professional who can look at your whole return.