Renting a home to your child is legal, and it can be a legitimate rental business for tax purposes, but only if you charge fair market rent. Charge market rate and document it, and the IRS treats the arrangement like any other rental: you report the rent on Schedule E and deduct mortgage interest, property taxes, insurance, repairs, and depreciation. Charge your child a discount, and the IRS reclassifies the property as personal use, which means you still owe tax on the rent you collect but lose most of the deductions that would otherwise offset it.
That single choice — market rent or discounted rent — drives almost every tax consequence below.
What Counts as Fair Market Rent
Fair market rent is what an unrelated tenant would pay for the same property based on its location, size, condition, and features. The IRS uses this benchmark to decide whether your arrangement qualifies as real rental activity. If you rent to your child at less than fair market value, the IRS treats every day your child occupies the property as a day of personal use by you, not as rental activity.1Internal Revenue Service. Publication 527 (2025), Residential Rental Property
To establish the number, pull comparable rental listings in the same neighborhood with a similar bedroom count, square footage, and amenities. Save screenshots or printouts; that file becomes your evidence if the IRS ever questions the rent. For a stronger record, hire an independent appraiser or real estate agent to provide a written rental valuation.
One warning that trips up well-meaning parents: do not gift money back to your child to help cover the rent. If you charge $1,500 a month and hand back $500 as a “gift,” the IRS can treat the net rent as $1,000 and reclassify the property as personal use. The payments need to reflect genuine, arm’s-length money moving in one direction.
Tax Treatment When You Charge Market Rent
When you charge your child fair market rent and they use the property as their primary residence, the IRS treats the arrangement like any other rental business. You report rental income on Schedule E and deduct the ordinary costs of running the property.1Internal Revenue Service. Publication 527 (2025), Residential Rental Property Deductible costs include:
- Mortgage interest allocated to the rental property
- Real estate taxes on the property
- Landlord or rental dwelling insurance premiums
- Maintenance and routine repairs
- Depreciation of the residential structure over 27.5 years
If your total deductible expenses exceed the rental income, you may be able to claim a rental loss. Rental income is generally classified as passive, however, so losses are subject to the passive activity rules.1Internal Revenue Service. Publication 527 (2025), Residential Rental Property
The $25,000 Active Participation Allowance
There is a special exception for landlords who actively participate in managing a rental. If you make management decisions like approving tenants, setting rent, and authorizing repairs, you can deduct up to $25,000 in rental losses against your other income each year. The allowance phases out once your modified adjusted gross income exceeds $100,000 and disappears entirely at $150,000.2Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited
Renting to your child actually makes active participation easy to demonstrate, since you are likely handling repairs and management decisions directly. Keep records showing your involvement.
Qualified Business Income Deduction
Rental income that qualifies as income from a trade or business may also be eligible for the Section 199A qualified business income deduction, which allows you to deduct up to 20% of qualified business income. The IRS provides a safe harbor for rental real estate enterprises that meet certain recordkeeping and hour requirements.3Internal Revenue Service. Qualified Business Income Deduction Even if you don’t meet the safe harbor, a rental that rises to the level of a trade or business under general tax principles can still qualify. The deduction was made permanent by legislation in 2025 and remains available for 2026 and beyond.
Tax Treatment When You Charge Below-Market Rent
Charge less than fair market rent and the tax picture changes dramatically. The IRS treats the property as being used for personal purposes, not as a rental business. You must still report whatever rent you receive as income, but the deductions available to legitimate landlords largely vanish.4Internal Revenue Service. Personal Use of Business Property (Condo, Timeshare, etc.) 1
Under the personal-use classification, your rental expense deductions cannot exceed the rental income you collected. You cannot claim a net rental loss. You cannot deduct depreciation as a rental expense. If you itemize, you can still deduct mortgage interest and property taxes on Schedule A, but only as personal deductions.1Internal Revenue Service. Publication 527 (2025), Residential Rental Property
This is the trap. Parents charge a discounted rent out of generosity, then discover at tax time that they owe income tax on the rent but cannot offset it with the property expenses that would otherwise produce a loss. The IRS essentially treats you as having the worst of both worlds: taxed like a landlord, deducting like a homeowner.
The Gift Tax Angle on a Rent Discount
Charging below-market rent raises a second issue beyond lost deductions. The IRS defines a gift as any transfer where you receive less than full value in return, and that includes giving someone the use of property at a discount.5Internal Revenue Service. Gift Tax If fair market rent is $2,000 a month and you charge your child $1,200, the $800 monthly difference ($9,600 per year) could be treated as a gift.
For 2026, the annual gift tax exclusion is $19,000 per recipient.6Internal Revenue Service. Estate and Gift Tax If the annual rent discount stays below that threshold, you owe no gift tax and file no gift tax return. If both parents own the property, each can apply their own $19,000 exclusion, effectively doubling the threshold to $38,000. Cross the exclusion and you would file Form 709, with the excess counting against your lifetime gift and estate tax exemption.
The practical risk for most families is low; a rent discount rarely exceeds $19,000 a year. Track it anyway, especially if you are also making other gifts to the same child during the year, because all gifts to that person share the single $19,000 limit.
Other Rules That Catch Parents Off Guard
Your Mortgage May Require You to Live There
Most conventional mortgages for a primary residence include an occupancy clause requiring you to live in the home for a set period, typically at least 12 months after closing, before converting it to a rental. Renting the property before that period ends, or without notifying your lender, could put you in violation of your loan terms. Contact your mortgage servicer before signing a lease. They may need to adjust your loan terms, escrow account, or insurance requirements.
Your Homeowner’s Policy Will Not Cover a Tenant
Standard homeowner’s insurance covers an owner-occupied home. The moment someone else lives there as a tenant, even your own child, the risk profile changes and your insurer needs to know. Failing to disclose the rental arrangement could give your insurance company grounds to deny a claim. You will likely need a landlord policy, which covers structural damage, liability if someone is injured on the property, and potentially lost rental income if the home becomes uninhabitable.
Section 8 Vouchers Generally Cannot Be Used
If your child receives a Section 8 Housing Choice Voucher, federal regulations generally prohibit them from using it to rent from a parent, grandparent, or sibling. The public housing authority must deny the arrangement unless it determines that approving the unit would serve as a reasonable accommodation for a family member with a disability.7eCFR. 24 CFR 982.306 – PHA Disapproval of Owner
The restriction applies when a family first receives assistance for a particular unit. If your child already lives in the home with continued voucher assistance and the tenancy is being renewed rather than newly established, the rule may not apply. For a new arrangement, expect the housing authority to reject it unless the disability exception applies.
Medicaid Look-Back on Below-Market Rent
If you may need Medicaid-funded long-term care in the future, discounted rent to your child deserves extra scrutiny. Federal law requires states to review all asset transfers made within 60 months before a Medicaid application. Any transfer for less than fair market value during that look-back period can trigger a penalty that delays eligibility for benefits.8Office of the Law Revision Counsel. 42 USC 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
Charging your child significantly below market rent means you are effectively transferring value each month. Over five years those discounts can add up to a figure large enough to create a meaningful penalty period. If long-term care is even a possibility within the next several years, that is a strong reason to either charge fair market rent or consult an elder law attorney before setting the price.
Local Licensing
Many municipalities require landlords to obtain a rental license or registration before leasing residential property. Fees and requirements vary widely, from a simple annual registration to a mandatory property inspection. Some cities impose these requirements even for a single unit. Check with your local housing or building department before the lease starts, because operating without the required permit can result in fines and complicate your position in any dispute.
Put the Lease in Writing, and Understand What That Means
A handshake with your child creates two problems. You have no documentation to show the IRS that the arrangement is a business rather than a family favor, and you have no legal framework if things go sideways.
A written lease should cover landlord and tenant names, the property address, the lease term, monthly rent, the due date, the security deposit, maintenance responsibilities, rules about guests and alterations, and what happens if either party wants to end the agreement early. Keep the language straightforward and get every important term on paper.
One thing parents overlook: a formal lease means formal eviction rules apply. If the relationship sours and your child refuses to leave, you cannot simply change the locks. Once someone is a tenant under a written lease, you must follow your jurisdiction’s eviction process, which typically requires written notice, a waiting period, and a court filing. Timelines vary by state, but family status does not create an exception to tenant protection laws. Think that through before you sign.
Keeping Records That Survive an Audit
The IRS scrutinizes related-party rentals more than arm’s-length transactions, for obvious reasons. The best protection is documentation. Keep copies of your comparable-rent research or appraisal, the signed lease, bank statements showing rent payments (electronic transfers beat cash), receipts for every repair and maintenance expense, and your insurance policy showing landlord coverage.
Have your child pay rent from their own bank account into yours. Avoid round-tripping money through gifts, loans, or cash that leaves no trail. If the IRS audits the arrangement, your goal is to show that every element looks exactly as it would with a stranger: market-rate rent, documented payments, legitimate expenses, and a signed lease with real terms that both parties follow.