Second Home Mortgage Calculator
Estimate the monthly payment on a vacation home or second property. The calculator builds in the 10–20% down payment most lenders require and the higher rate second homes carry versus a primary residence — then nets out any rent income you expect to earn.
Second Home Details
Second homes typically require 10–20% down. $45,000 at 10%.
Second-home rates usually run ~0.5–0.75% above a primary residence.
Monthly Payment (PITI)
$3,325
$405,000 loan at 7.25% over 30 years, $45,000 down (10%).
Principal & Interest
$2,763
Property Tax
$413
Insurance
$150
Rent Income Offset
Planning to rent it out part of the year? Enter the average monthly rent income you expect to keep after platform fees and vacancy to see your net out-of-pocket cost.
Net Monthly Cost After Rent
$3,325
Your share of the monthly payment after rent income.
Down Payment
$45,000
Loan Amount
$405,000
Total Interest
$589,613
Under 20% down — expect PMI on top of this payment.
Most lenders set a 10% floor on second-home down payments and reserve their best rates for 20%+. Below 20%, conventional private mortgage insurance applies just as it would on a primary residence — estimate it with the PMI calculator.
Second Home vs. Investment Property Mortgage Differences
Lenders draw a sharp line between a second home and an investment property, and which bucket you fall into changes your rate, down payment, and how you qualify. A second home is a place you use personally — a lake cabin, a beach condo, a ski place — that you occupy for part of the year and don't operate as a full-time rental. An investment property is bought to produce rental income and is rarely occupied by the owner.
- Down payment: second homes typically start at 10% down; investment properties usually require 20–25%.
- Rate: second-home rates run roughly 0.5–0.75% above a primary residence; investment-property rates are higher still, often 0.5–1%+ above second-home rates.
- Qualifying income:on a second home you qualify on your own income; projected rent generally can't be counted. On an investment loan, a portion of expected rent can count toward qualifying.
Don't be tempted to label a rental as a “second home” to grab the lower rate. Occupancy fraud is something lenders actively check for, and misrepresenting how you'll use the property can trigger the loan being called due. If you genuinely plan to rent most of the year, price it as an investment property from the start.
How Lenders Qualify You for a Second Mortgage
The key hurdle is that you have to show you can carry two housing payments at once — without leaning on rental income. Underwriting on a second home is tighter than on your first, and the common requirements look like this:
- Credit score: roughly 680–700+ for approval, with the best pricing reserved for 740+.
- Debt-to-income ratio: typically capped near 43–45%, counting both your existing mortgage and the new second-home payment.
- Cash reserves: often two to six months of payments on each property, proven with bank or brokerage statements.
- Down payment & documentation:10% minimum (20% to skip PMI), full income docs, and a credible explanation of how you'll use the home.
Because your debt-to-income ratio carries both payments, paying down a car loan or credit-card balance before you apply can meaningfully improve your approval odds. Run your numbers through the affordability calculator and confirm the new payment fits alongside your current one with the debt-to-income calculator.
Is a Second Home Worth It? Using the Rent Income Offset
A vacation home is part lifestyle, part math. The rent-income offset above turns the “is it worth it?” question into a number: your full monthly payment minus the rent you realistically expect to keep. The word “realistically” matters — start from gross nightly or monthly rent, then subtract platform fees, cleaning, management, and an honest vacancy allowance before you type a figure into the offset.
If your net monthly cost lands near zero, occasional rental income is essentially covering the carry and your personal use comes nearly free. If it stays high, you're funding a lifestyle purchase — which can be a perfectly good decision, just one you should make with eyes open. Remember the offset here covers principal, interest, taxes, and insurance; a complete picture also includes HOA dues, utilities, maintenance, and furnishing costs that don't show up in a mortgage payment.
One more caution: if rental income is the whole reason the purchase works, the loan probably belongs in the investment-property category, not the second-home one. Use this page to pressure-test a personal-use vacation home, and see how the balance pays down over time with the amortization schedule.
Frequently Asked Questions
How much down payment do I need for a second home?
Most lenders require at least 10% down on a second home, and they reserve their best rates and easiest approvals for borrowers who put 20% or more down. That's a real step up from the 3–5% minimums common on a primary residence. Below 20%, you'll also carry private mortgage insurance on a conventional second-home loan, just as you would on a primary home. Keep in mind that government-backed FHA, VA, and USDA loans are generally limited to primary residences and can't be used to buy a vacation home.
Why are second home mortgage rates higher than primary residence rates?
Lenders view a second home as riskier than the home you live in. If money gets tight, borrowers prioritize the mortgage on their primary residence and let the vacation home go first — so lenders price in that elevated default risk. In practice, second-home rates usually run about 0.5% to 0.75% higher than a comparable primary-residence loan. The exact premium depends on your credit score, down payment, and reserves. A larger down payment and strong cash reserves are the most effective ways to narrow the gap.
What's the difference between a second home and an investment property loan?
It comes down to occupancy and intent. A second home is a place you use personally — a vacation house or weekend retreat — that you occupy for part of the year and don't rent out full-time. An investment property is bought primarily to generate rental income and is rarely occupied by the owner. Investment-property loans carry the highest rates (often 0.5%–1%+ above second-home rates) and the largest down payments (frequently 20–25%). Lenders scrutinize how you classify the property, because occupancy fraud — claiming a rental is a second home to get a better rate — is taken seriously.
Can rental income from my second home help me qualify?
Generally no — not on a true second-home loan. Because a second home is underwritten as a personal-use property, lenders qualify you on your own income and don't count projected rent toward your debt-to-income ratio. If you want rental income to help you qualify, the loan is usually structured as an investment-property mortgage instead, with the higher rate and down payment that come with it. You can still rent the home out occasionally after closing, but check your loan terms — some second-home loans limit how many days per year you can rent it.
How do lenders qualify me for a second mortgage?
Expect stricter standards than your first mortgage. Lenders typically want a credit score around 680–700+, a debt-to-income ratio at or below 43–45% that accounts for BOTH your existing housing payment and the new one, and cash reserves of two to six months of payments on each property. They'll verify that you can carry both homes at once without rental income. The bar is higher precisely because you're taking on a second full housing payment, so paying down other debt and documenting reserves before you apply makes a real difference.