Two Sisters Have Owned Their Mother’s House Together Since 2014, and the Younger One Still Lives in It. When the Older One Needs a Nursing Home, Medicaid Will Let Her Sign Her Half Over, and the Five-Year Look-Back Will Never Apply

It’s fair to say this question comes up pretty often. The scenario is that two siblings inherit or buy a parent’s house together, and one keeps living there. Years later, the other one’s health starts to slip, someone brings up Medicaid’s five-year look-back, and the family wants to know whether that half of the house is safe.

The short answer is that federal law has a carve-out made for this situation. The longer answer is that it rests on one condition families tend to read past, and the tax bill on the transfer works differently than most people expect. Here is what it takes for the plan to work.

Federal Law Has a Sibling Exception, With Strings Attached

Medicaid normally penalizes any transfer made for less than fair market value during the look-back window. Federal guidance sets aside a specific exception for a home. A transfer of title to a sibling triggers no penalty period if that sibling “has ownership interest (including life estate and equitable ownership) in the home” and “was residing in the transferor’s home for at least 1 year immediately before the date the transferor becomes institutionalized.” The same law also blocks a pre-death Medicaid lien on the home while such a sibling “is lawfully residing in such home.”

The younger sister has held an equity interest for years, so the ownership test is met. Residence counts only if the house is her “primary place of residence,” and the year that matters is the one right before her sister goes into care. A sister who moved out for two years and came back six months before the nursing home admission fails the test, no matter how long she lived there earlier.

Why the Older Sister’s Address Can Decide Everything

The headline skips this condition, as the exception covers transfers of the transferor’s home. It also assumes both sisters lived under the same roof. If the older sister has spent the past decade in her own condo across town, her half of Mom’s house is a share of real estate she owns but does not live in. The sibling exception protects a sister who lived in the transferor’s home, and the house is arguably not that. Without the exception, giving away that half is an ordinary gift subject to the full look-back.

The stakes are large, as the national median for a private nursing home room runs $10,798 a month, or about $129,576 a year. A penalized transfer of a six-figure half interest could leave the family paying privately for many months. If the older sister lives in the house, you can easily prove it with her driver’s license, tax returns, voter registration, and mail at that address. If she doesn’t, talk to an elder law attorney early about how the state treats jointly owned property and the next steps, because states run Medicaid and their rules differ at the edges.

Running the Tax Math on Signing Over Half

Assuming the exception applies, the transfer is still a gift for federal tax purposes. The 2026 annual exclusion is $19,000 per recipient, so a half interest worth more than that requires a gift tax return. Tax is owed only when lifetime gifts exceed the $15 million exemption, so in practice this is paperwork.

The real cost is basis, as gifted property keeps the donor’s basis under 26 U.S.C. § 1015(a), while inherited property generally steps up to fair market value at death under 26 U.S.C. § 1014. Take a house with a combined basis of $200,000 that is worth $400,000 today. After the gift, the younger sister owns it all with the original basis, so selling at that price creates a $200,000 gain. Had she inherited the half instead, the gain would be about $100,000.

Her residence works in her favor here, as a single owner who meets the ownership and use tests can exclude up to $250,000 of gain on a main home. In this example, the lost step-up costs her nothing. The basis hit starts to bite only in high-appreciation markets, or if she sells before she meets the two-year tests on the full property. Keeping the half until death to capture the step-up has its own price. In many states, that half could then be exposed to Medicaid estate recovery.

What It Takes to Make This Work

Four things need to be true. Both sisters hold title, which they do. The younger sister lives in the house as her primary residence for the full year before her sister is admitted. The house is also the older sister’s home, which is the condition most likely to fail.

And the title transfer goes on record with a gift tax return attached. If all four hold, the look-back never applies, and the $129,576 annual cost exposure disappears. If the older sister lives somewhere else, the federal exception probably won’t save the plan, and the family should start a standard five-year strategy now.

One point to remember: the rule follows where the sister who needs care actually lives. Whose name is on the title matters less. Decide that question with records and a state elder law review while she is still healthy.

Contact [email protected] for any questions or corrections.