Adding Your Kid to the Deed Is a DIY Move Estate Attorneys Warn Against Constantly. If the House Sells Before You Die, Your Child Can Owe Capital Gains a Will Would Have Erased.
Putting your child on your home's deed seems like a simple way to avoid probate, but estate attorneys flag one tax consequence that catches families completely off guard when it comes time to sell.
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Adding an adult child to your home’s deed looks like a cheap way to skip probate. It can also leave your child with a tax bill. A sale during your life leaves your child owing capital gains tax on their share of decades of price growth. If the same child had inherited the house through a will, a revocable living trust or a transfer-on-death deed, that gain would usually have been eliminated.
This hits hardest for homeowners who bought long ago. The national Case-Shiller home price index was at 336.7 in June 2026. Estate attorneys often warn clients against this move.
Section 1015 Hands Your Child Your Original Cost Basis
Cost basis is the amount the IRS counts as your investment in a property. When you sell, you pay tax on the sale price minus your basis. Under Internal Revenue Code §1015, property you receive as a gift keeps the giver’s basis. Put your child on the deed and your old basis goes with their share.
Inheritance follows a different rule. Under §1014, property received from someone who died is valued at fair market value as of the date of death. This reset is called the step-up in basis. It wipes out the growth in value from the owner’s life. A gift made while you are alive gets no step-up.
A $600,000 Sale Can Cost Your Child $37,500 in Federal Tax
A single parent bought a house in 1995 for $100,000. The parent transferred half to an adult child who lives elsewhere, and the house sells in 2026 for $600,000. The child’s half has a carryover basis of $50,000, leaving a gain of $250,000. At the 15% long-term capital gains rate, the child owes $37,500 in federal tax. State income tax comes on top of that.
The parent’s half has the same gain. However, §121 allows someone who owned and lived in a home for 2 of the last 5 years exclude up to $250,000 of gain. The child never lived there, so the child gets no exclusion.
| Path (same $600,000 value) | Basis | Taxable Gain | Federal Tax at 15% |
|---|---|---|---|
| Child’s given half, sold during parent’s life | $50,000 | $250,000 | $37,500 |
| Whole house inherited, sold at date-of-death value | $600,000 | $0 | $0 |
What if a parent passes away first while both hold title as joint tenants? Then §1014(b)(9) can step up the part of the house counted in the parent’s estate. How much counts depends on who paid for the home.
4 Costs of a Shared Deed Beyond Capital Gains
- Your child’s liabilities reach your house. A creditor’s judgment or lawsuit involving your child can be placed on to their share.
- You lose control. A sale or refinance needs your child’s signature.
- Medicaid may treat the deed as a transfer. Giving away part of a home can trigger Medicaid look-back penalties.
- The gift triggers a filing requirement. Half a house tops the $19,000 annual gift exclusion for 2026, so you generally must file Form 709. Actual gift tax applies only after your life given pass the $15,000,000 basic exclusion.
Trusts, TOD Deeds and Lady Bird Deeds Keep the Step-Up
A revocable living trust keeps you in charge while alive and maintains the step-up under §1014(b)(2). A transfer-on-death deed names who gets the house when you die while you retain full ownership. A lady bird deed allows you sell or mortgage without the beneficiary’s consent. Michigan, Florida, Texas, Vermont and West Virginia recognize lady bird deeds. Check your state’s rules (the deed is only one line item on a longer estate checklist, and we put the whole thing, beneficiary forms and titling included, in a free report here).
5 Things to Check If Your Child Is Already on the Deed
- Your county can provide the recorded deed. Note whether it says joint tenancy with right of survivorship or tenancy in common.
- Find out whether anyone filed Form 709 for the year your child was added.
- Keep the closing statement and receipts for improvements.
- An estate attorney or CPA can advise you on having your child deed the share back to you, then moving the house into a trust or a TOD deed. Under §1014(e), if you die within a year of getting the share back and it passes to that same child, that share gets no step-up.
- Confirm which deed types your state allows before re-deeding anything.
Bottom Line: $37,500 Versus $0
Selling a given half-share during the parent’s life costs the child $37,500 in federal tax. Inheriting the house would have eliminated that tax. If your child is already on your deed, ask a professional if a trust or a state-approved deed can get back the step-up.
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Jake has been been working in financial media for almost 15 years. He focuses on all things personal finance for 24/7 Wall St. with high hopes to educate and entertain. Most recently, Jake spent 12 years working various roles at The Motley Fool. He started copy editing fool.com content, worked on premium and marketing campaigns, and helped launch The Ascent, a personal finance brand.
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