To buy a second home, plan on a down payment of at least 10 percent, stronger credit and cash reserves than a primary residence would require, and a property that satisfies both your lender’s occupancy rules and the IRS’s personal-use test. Interest costs run higher because every second-home mortgage carries a pricing surcharge, and the tax treatment shifts once the property isn’t your main residence. Knowing the requirements before you shop keeps the loan on track and prevents surprises at closing.
What Counts as a Second Home
Two separate definitions matter, and they don’t line up perfectly.
Your lender’s definition governs the loan. Fannie Mae treats a property as a second home if it’s a one-unit dwelling, suitable for year-round use, that you occupy for some part of the year and control exclusively.1Fannie Mae. Occupancy Types Timeshares don’t qualify, and neither does any arrangement that hands occupancy control to a management company. Turning the home into a full-time rental right after closing violates the loan’s occupancy terms and can trigger a default.
The IRS uses a different test. A property counts as your residence for tax purposes if you use it personally for more than the greater of 14 days or 10 percent of the days it’s rented at fair value during the year.2Office of the Law Revision Counsel. 26 USC 280A – Disallowance of Certain Expenses in Connection With Business Use of Home, Rental of Vacation Homes, Etc Fail that threshold and the IRS reclassifies the home as an investment property, which changes how rental income is reported, which expenses you can deduct, and whether passive loss limits kick in.
What You’ll Need to Qualify for the Loan
The financial bar sits noticeably higher than for a primary residence.
- Down payment. Conventional second-home loans typically require at least 10 percent down. Putting 15 to 20 percent down lowers your pricing surcharges and may reduce or eliminate private mortgage insurance.1Fannie Mae. Occupancy Types
- Credit score. Fannie Mae doesn’t publish a hard minimum, but individual lenders commonly want 680 to 720. Lower scores face significantly higher loan-level pricing adjustments that push up the effective interest rate.3Fannie Mae. Eligibility Matrix
- Debt-to-income ratio. Fannie Mae caps total DTI at 50 percent through its Desktop Underwriter system, and at 36 to 45 percent for manually underwritten loans depending on your credit and reserves. Your DTI counts both mortgage payments, current home and new one.4Fannie Mae. Debt-to-Income Ratios
- Cash reserves. You need at least two months of mortgage payments on the second home in liquid assets. Other financed properties can push that requirement higher.5Fannie Mae. Minimum Reserve Requirements
Expect to hand over two years of federal tax returns, W-2s, and at least 60 days of bank statements documenting the down payment, closing costs, and reserves. The lender will verify your employment again within 10 business days of closing.6Fannie Mae. Verbal Verification of Employment
How Second-Home Mortgages Cost More
Every second-home mortgage carries a loan-level price adjustment on top of your interest rate. The surcharge runs from 1.125 percent of the loan amount at lower LTV ratios up to 4.125 percent when LTV exceeds 75 percent.7Fannie Mae. LLPA Matrix You pay it at closing or absorb it as a higher rate. On a $400,000 loan with 10 percent down, the LLPA alone adds roughly $13,500 to closing costs or the rate equivalent. Dropping below 75 percent LTV nearly halves the surcharge, which is the strongest financial argument for putting more down.
Government-backed loans aren’t an option here. FHA financing is limited to a borrower’s principal residence,8U.S. Department of Housing and Urban Development. Can a Person Have More Than One FHA Loan and VA loans are similarly restricted to homes you’ll occupy as your main residence.
Using Home Equity to Fund the Purchase
If you have substantial equity in your current home, two products let you tap it for the down payment or the full purchase price.
A home equity line of credit places a second lien on your primary residence and lets you draw funds as needed, with interest only on what you use and a typically variable rate. A home equity loan also uses your primary home as collateral but delivers a lump sum at a fixed rate with a set repayment schedule. Either way, the new debt against your primary residence goes into the DTI ratio your lender uses to underwrite the second-home mortgage.
Tax Rules That Change Once You Own It
Mortgage Interest Deduction
You can deduct mortgage interest on a second home if you itemize and your combined mortgage debt across both homes doesn’t exceed $750,000 ($375,000 if married filing separately). This cap applies to mortgages taken out after December 15, 2017.9Internal Revenue Service. Publication 936 (2025), Home Mortgage Interest Deduction
The 14-Day Rental Rule
Rent your second home for fewer than 15 days during the year and none of that rental income is taxable. You still deduct mortgage interest and property taxes on Schedule A as usual.10Internal Revenue Service. Publication 527 (2025), Residential Rental Property
Rent for 15 days or more and you must report the income. You can then deduct a prorated share of mortgage interest, property taxes, insurance, utilities, maintenance, and depreciation, based on the ratio of rental days to total days of use.11Internal Revenue Service. Topic No. 415, Renting Residential and Vacation Property The personal-use share of mortgage interest and property taxes still goes on Schedule A if you itemize.
Rental Losses
Rental income is generally passive, so losses typically can’t offset wages or other non-passive income. If you actively participate in managing the rental, you may deduct up to $25,000 in losses per year against other income, as long as modified adjusted gross income stays below $100,000. The allowance phases out between $100,000 and $150,000.10Internal Revenue Service. Publication 527 (2025), Residential Rental Property If the property is a residence under the personal-use test and you rent it 15 days or more, expenses exceeding rental income can’t offset other income at all; they carry forward.
Capital Gains When You Sell
The primary-residence gain exclusion of $250,000 ($500,000 for married couples filing jointly) requires two of the last five years of ownership and use as a main residence. A second home doesn’t qualify, so a profitable sale is fully taxable. You can convert the property into your primary residence and live in it long enough to qualify, but gain attributable to periods of “nonqualified use” remains taxable.12Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence
Insurance and Property Tax Costs to Budget For
A standard homeowners policy on a second home usually includes a vacancy clause that limits or excludes coverage once the property sits empty for 30 to 60 consecutive days. Since second homes are often unoccupied for long stretches, you may need a vacancy endorsement or a separate vacant-home policy. Undetected water leaks, theft, and vandalism all get more likely when a house sits empty.
Location drives the rest of your coverage. Flood zones require a separate flood policy, coastal properties often need separate wind coverage, and homes in wildfire-prone areas can face limited availability or higher premiums. Your lender will require proof of adequate hazard coverage before closing.
Property taxes typically run higher in relative terms too. Most states offer a homestead exemption that reduces the taxable value of a primary residence, and second homes almost never qualify. Homestead exemptions in some states lower taxable value by $25,000 to $50,000 or more; you won’t get that reduction on the second property. Check the effective property tax rate in the specific county before you budget for ongoing costs.
Closing the Purchase
After the seller accepts your written offer, submit the Uniform Residential Loan Application (Form 1003) with your full documentation package for final underwriting.13Fannie Mae. Uniform Residential Loan Application (Form 1003) Designate the property as a secondary residence on the application; that classification drives the underwriting standards and pricing the lender applies.
The lender orders an independent appraisal to confirm the value supports the loan amount. Appraisals for second homes in resort or rural areas can be trickier because comparable recent sales may be scarce nearby, though Fannie Mae permits appraisers to reach further afield when they explain the choice.14Fannie Mae. Comparable Sales
A title company then searches public records to confirm clear ownership and the absence of liens, and issues two title insurance policies at closing, one for the lender and one for you.
Federal law requires your lender to deliver a Closing Disclosure at least three business days before closing.15Consumer Financial Protection Bureau. What Should I Do if I Do Not Get a Closing Disclosure Three Days Before My Mortgage Closing Compare it line by line against your earlier Loan Estimate; any fees that jumped beyond the allowed tolerances must be corrected before you sign. At closing you sign the note and the security instrument, the escrow agent distributes funds, and once the deed records at the county, the property is yours.