Second Home Mortgage Rate Premium: 2026 Data

The average second home mortgage rate sat at 7.60% in April 2026, according to Curinos data, while the average 30-year fixed rate on a primary residence was 6.71% as of May 2026. That is an 0.89 percentage point gap — wider than the 0.25% to 0.50% “premium” most lender marketing pages quote for second homes. On a $680,000 loan, the difference between those two rates is roughly $400 a month, or about $4,800 a year, before a single property tax bill or HOA invoice arrives.

The premium is the headline number buyers fixate on. It is also the smallest part of the problem.

What the rate premium actually costs

Lenders price second homes higher because the default logic is straightforward: when money gets tight, a borrower keeps paying the roof over their head before the lake house. Bankrate and Experian both describe the typical quoted spread as 0.25 to 0.75 percentage points over a comparable primary mortgage. The realized spread in the current market runs at the top of — or past — that band.

Run the Curinos figures through a 30-year amortization. The table below holds the loan amount constant and varies only the rate, isolating the premium’s effect.

Rates: Curinos LLC (second home, April 2026; primary 30-year fixed, May 2026). Payment and interest figures calculated on a $680,000 fixed-rate loan; rounded.

The lifetime interest delta — roughly $153,000 — is the number worth sitting with. It exceeds the entire purchase price of a starter property in many of the markets where second homes cluster. And it is the part of the cost stack that financing structure can attack directly, through a larger down payment, a 15-year term, or paying down principal aggressively in the early years when the rate premium compounds hardest.

Key numbers at a glance

Sources: Curinos LLC (2026); NAHB estimates from U.S. Census Bureau American Community Survey (2024); Redfin analysis of Home Mortgage Disclosure Act data (2024).

The premium is one line in a stack of carrying costs

Buyers who negotiate hard on the rate and then stop have solved the visible problem and ignored the structural one. A second home cost guide for buyers has to account for the full annual carry, not just the note. Using the total cost of ownership framework, the recurring components break down as follows for a hypothetical $850,000 lake property financed at the 7.60% second home rate.

Mortgage figure calculated from Curinos April 2026 rate. Tax, insurance, HOA, maintenance, utilities and travel are illustrative estimates using the cluster total cost of ownership framework; maintenance band of 1–2% of value reflects standard vacation-property guidance. Actual figures vary by market and usage. Property-specific cost data was unavailable; ranges are segment-based.

The maintenance line deserves attention. At 1.5% of an $850,000 value, it runs $12,750 a year — more than three times the HOA and within striking distance of the entire rate premium. Vacation properties skew toward the upper end of the 1–2% maintenance band because they sit empty, weather-exposed, and often in climates that punish neglect. A lake house ownership cost breakdown tends to show maintenance and seasonal utilities consuming far more than buyers project during the showing.

Rental income changes the math — until the IRS reclassifies you

Most $150k+ buyers underwrite the purchase assuming rental income will absorb part of the carry. It can. Whether the IRS lets you deduct the expenses that make that income possible depends on a single behavioral threshold.

Under IRS Publication 527 (2025), if personal use exceeds the greater of 14 days or 10% of the days the property is rented at fair market value, the property is treated as a dwelling used as a home — and rental expense deductions become limited. Cross the line and you can no longer deduct losses against other income; your write-offs are capped at rental income. The IRS 14-day rule tax math is the hinge on which the entire rental thesis turns, and it is the rule buyers most often discover after the fact.

Model both scenarios. Suppose the lake property generates $40,000 in gross rental revenue at a realistic occupancy rate, with a property manager taking 25% — squarely inside the 20–30% range typical for vacation rentals. Net rental income lands near $30,000 before accounting for vacancy. Whether that $30,000 arrives with deductible expenses attached, or as income against a capped expense schedule, can swing the after-tax result by thousands. A second home rental income offset analysis only works if the personal-use days stay disciplined.

I ran the occupancy assumptions against published short-term rental benchmarks rather than manager projections, which the cluster sourcing rules treat as unreliable. AirDNA market data and VRBO occupancy estimates give a defensible range for a given geography; an owner can apply their specific market’s figures to the same framework. AirDNA income potential versus ownership cost rarely closes the gap as cleanly as listing-platform marketing suggests.

Finluxy Vacation Home Net Carry Rate

The single figure that captures whether a second home is a manageable luxury or a slow financial leak is the net carry rate — annual cost after rental income, as a percentage of purchase price. The table calculates the Finluxy Vacation Home Net Carry Rate for the $850,000 lake property under three usage patterns.

Finluxy Vacation Home Net Carry Rate = (annual TCO − net rental income) ÷ purchase price × 100. TCO from the table above (Curinos April 2026 mortgage rate plus framework estimates). Net rental income reflects 25% management fee within the 20–30% standard band; gross revenue figures are segment estimates, not property-specific.

Even in the most rental-optimized scenario, the property costs 5.6% of its purchase price every year. At purely personal use, 11.3%. The rate premium — that 0.89 point everyone negotiates over — contributes only about 0.6 percentage points to the personal-use carry rate. The financing premium is real, but it is dwarfed by the operating reality of owning a home you visit a few weeks a year. Compare that against a destination-specific figure in a net carry rate explainer for vacation homes and the pattern holds across markets.

What most coverage gets wrong about the premium

Mortgage explainers frame the second home rate premium as the central financial decision: minimize the spread, and you have won. The data points the other way. The premium adds roughly $5,100 a year on a $680,000 loan. Maintenance alone, at the midpoint for a vacation property, runs $12,750. Management fees on rental revenue run $10,000 or more. The premium is the most negotiable cost and the least consequential one in absolute dollars.

The more useful insight buried in the 2024 origination data: only 86,604 second home purchase mortgages were taken out that year, per Redfin’s HMDA analysis — the lowest since at least 2018. The buyers still transacting at 7.60% rates are not stretching; they are largely high-income households who could absorb the premium and chose to. The premium did not stop them. The total carry is what determines whether the purchase ages well, and that is a far harder number to negotiate down.

Geography compounds the premium

Rates do not vary by state, but the loan-level pricing that sits on top of the base rate does, because property values, insurance costs, and tax burdens differ sharply by market. The same 0.89 point premium costs dramatically more in absolute dollars on a Hamptons property than on a Midwestern lake cabin, and the surrounding carrying costs diverge even further.

Premium cost = 0.89 point applied to the representative loan, first-year interest basis. Cost drivers reflect cluster market analysis; figures illustrative, not market surveys.

In the highest-cost markets the premium becomes a five-figure annual line, yet it is still overshadowed by insurance and tax escalation. A Hamptons property carrying cost breakdown shows tax and insurance dominating. In the mountains, a Colorado mountain home ownership cost tilts toward maintenance and altitude-related upkeep. And in storm-exposed coastal Florida, a Florida vacation home total cost of ownership increasingly hinges on whether insurance is even available, which helps explain why Florida second home originations fell hardest in 2024.

The $150k+ household decision

For a household earning $150,000 or more, the second home rate premium is rarely the binding constraint. The premium on a typical loan is a rounding error against gross income. The binding constraint is the net carry rate: committing 6% to 11% of a property’s value annually, every year, to an asset used a few weeks at a time. At $850,000, that is $48,000 to $96,000 of after-tax cash flow redirected from other uses — retirement contributions, the primary mortgage, liquid reserves.

The decision framework worth running is not “can I get the rate down” but “what net carry rate can this household sustain indefinitely, and does the rental thesis survive contact with the IRS personal-use limit.” A buyer who will use the property 30 weekends a year has, by definition, forfeited the favorable rental deductions and is looking at the personal-use carry rate of 11.3%. A buyer who can discipline personal use to stay under the threshold and rent aggressively can push the carry toward 5.6% — still a meaningful annual cost, but one a high earner can rationalize as the price of access. The honest version of this purchase prices in the full carry, treats rental income as a partial offset rather than a business plan, and confirms with a tax advisor exactly how many personal-use days the deduction strategy can tolerate before the math inverts.