The main disadvantages of joint tenancy are that the right of survivorship overrides your will, one co-owner’s debts or lawsuits can put a lien on the property, adding someone to the title can trigger federal gift tax and reduce a later capital gains step-up, and an owner’s incapacity or Medicaid application can freeze or penalize the arrangement. These problems usually surface at the worst possible time: after a death, a lawsuit, or a health crisis.
Survivorship Overrides Your Will
When a joint tenant dies, their share passes automatically to the surviving co-owner. The will doesn’t control. Nothing the deceased person told the family controls. Whatever the estate plan says, the title wins.
This catches families constantly. A parent adds one adult child to a bank account or house deed for convenience, expecting an equal split among the siblings later. When the parent dies, that one child inherits the entire asset by operation of law and the other children receive nothing from it. By the time anyone realizes what happened, the transfer is already complete.
The rigidity works in only one direction. You can’t use joint tenancy to leave your share to a charity, a trust for a grandchild, or anyone other than the surviving co-owner. If your plan depends on directing specific assets to specific people, joint tenancy works against you.
A Co-Owner Can Sever the Joint Tenancy Without Telling You
Joint tenancy depends on what property lawyers call the four unities: all owners must take their interests at the same time, through the same instrument, in equal shares, and with equal rights to possess the whole. Break any unity and the joint tenancy converts to a tenancy in common, and the right of survivorship vanishes.
Any single joint tenant can break those unities alone. A co-owner can convey their share to a third party, or in many states even to themselves, and the joint tenancy is severed. No permission required. In some states, not even notice is required. You could believe you have a survivorship arrangement for years, then discover after a co-owner’s death that they quietly transferred their interest and their share now passes through their estate to someone you’ve never met.
Gift Tax When You Add Someone to the Title
Adding a person to a deed or account for less than fair market value counts as a gift under federal tax law.1Office of the Law Revision Counsel. 26 USC 2511 – Transfers in General If the transferred interest is worth more than the annual gift tax exclusion, which is $19,000 per recipient for 2026, you must file IRS Form 709.2Internal Revenue Service. What’s New – Estate and Gift Tax Most people won’t owe actual gift tax because the lifetime exemption is $15,000,000 for 2026, but the filing obligation still applies.3Office of the Law Revision Counsel. 26 U.S. Code 2010 – Unified Credit Against Estate Tax
Consider a home worth $400,000. Add your daughter as a joint tenant and you’ve made a gift of roughly $200,000, well above the $19,000 annual exclusion, so Form 709 is required and the excess reduces your lifetime exemption.4Internal Revenue Service. Instructions for Form 709 (2025) Many people skip this step because they don’t realize a name change on a deed is a taxable event.
You Lose Part of the Capital Gains Step-Up
When someone inherits property outright, the tax basis resets to fair market value at the date of death.5Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent That step-up can wipe out decades of appreciation. Inherit a house your parent bought for $80,000 that’s now worth $400,000, and your basis becomes $400,000. Sell it right away and you owe no capital gains tax.
Joint tenancy undercuts this. Only the deceased owner’s share gets the step-up. The surviving owner’s share keeps its original, lower basis.6Internal Revenue Service. Gifts and Inheritances If you and your parent owned that $400,000 house as joint tenants with a combined original basis of $80,000, only your parent’s half steps up to $200,000. Your half stays at $40,000. Total basis $240,000, not $400,000, leaving $160,000 of taxable gain on an immediate sale.
Married Couples in Community Property States Lose More
In community property states, both halves of community property receive a stepped-up basis when one spouse dies.5Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent The surviving spouse can then sell with little or no capital gains tax. Holding the same property as joint tenants instead forfeits the step-up on the survivor’s half, potentially adding tens of thousands in taxes to a later sale.7Internal Revenue Service. Community Property Couples in community property states who hold real estate as joint tenants are often leaving money on the table.
A Co-Owner’s Creditors Can Reach the Property
Joint tenancy ties your property to every co-owner’s financial life. If a co-owner runs up debt, loses a lawsuit, or files bankruptcy, their creditors can place a lien on the jointly held property. That lien attaches whether or not the other owners had anything to do with the debt.
The practical fallout is immediate. The lien can block a sale or refinance until the debt is resolved. A judgment creditor can, in some situations, force a sale of the debtor’s interest, which severs the joint tenancy and leaves you co-owning with a stranger. Even without a forced sale, the cloud on title depresses the property’s value and scares off buyers.
The risk is worst when you don’t know a co-owner’s full financial picture: adult children added to elderly parents’ deeds, business partners with personal debts, unmarried couples where one partner has credit problems.
Every Owner Has Veto Power
All joint tenants hold equal rights over the entire property. No single owner can sell, mortgage, or make major changes without the others’ agreement. When owners get along, that’s a minor inconvenience. When they don’t, it’s a deadlock.
Disagreements over joint property are common. One wants to sell; another wants to keep. One wants to renovate; another refuses to contribute. One wants to rent it out; another wants to live in it. Joint tenancy has no tiebreaker. Without unanimous agreement, nothing happens.
The legal escape valve is a partition action, a lawsuit asking a court to divide the property or force its sale. Courts generally have broad authority to order a sale when physical division isn’t practical, which describes most residential property. Partition suits are slow and expensive. Attorney fees alone often run $10,000 to $30,000 for a straightforward case, and contested partitions cost far more. Everyone walks away with less than they expected.
Incapacity Can Freeze the Property
Joint tenancy assumes every owner can take part in decisions. When one owner becomes mentally incapacitated by dementia, a stroke, or a serious accident, that assumption collapses. The incapacitated person can’t sign a deed, approve a mortgage, or consent to a sale, and no other joint tenant has automatic authority to act on their behalf.
Selling, refinancing, or making major repairs may then require going to court to have a guardian or conservator appointed. That process takes time, costs money, and puts court oversight on every significant property decision afterward. A co-owner who seeks appointment as guardian faces an inherent conflict of interest that courts scrutinize carefully. A durable power of attorney signed before incapacity can prevent the problem, but joint tenancy itself provides no built-in solution.
Medicaid Look-Back Penalties
p>Transferring property into joint tenancy can jeopardize eligibility for Medicaid long-term care benefits. Federal law requires states to review all asset transfers made within 60 months before a Medicaid application. Any transfer made for less than fair market value during that five-year window triggers a penalty period during which the applicant is ineligible for coverage of nursing facility services and other long-term care.8Office of the Law Revision Counsel. 42 U.S. Code 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
Adding a child or other person to your deed as a joint tenant for no payment falls squarely within this rule. If you need Medicaid-funded nursing home care within five years of that transfer, the state will treat the value you gave away as a disqualifying transfer. The penalty period is calculated by dividing the value transferred by the average monthly nursing home cost in your state. Depending on the property’s value, the penalty can run months or years, leaving you responsible for care costs that can easily exceed $8,000 to $10,000 per month.
People often add family members to titles as informal estate planning, not realizing they’ve started a clock that could disqualify them from the benefits they may need most.
Estate Tax Inclusion Can Be Higher Than You Expect
Joint tenancy also shapes how much of the property gets pulled into the deceased owner’s taxable estate. For non-spousal joint tenancies, the IRS presumes the entire property value belongs to the first owner who dies, unless the surviving owner can prove they contributed their own funds toward the purchase.9Office of the Law Revision Counsel. 26 U.S. Code 2040 – Joint Interests A parent who buys a house and adds an adult child as joint tenant may find the full value of that house included in the parent’s gross estate at death, not just half.
For married couples holding property as joint tenants, the rule is simpler: exactly half the value is included in the first spouse’s estate regardless of who paid.9Office of the Law Revision Counsel. 26 U.S. Code 2040 – Joint Interests With the lifetime estate tax exemption at $15,000,000 for 2026, most married couples won’t owe federal estate tax.3Office of the Law Revision Counsel. 26 U.S. Code 2010 – Unified Credit Against Estate Tax But for non-spousal joint tenancies involving high-value property, the full-inclusion presumption can create an unexpectedly large estate tax bill when the deceased owner’s total estate exceeds the exemption threshold.