Rental Property vs Treasury Bonds: Why Bonds Are Winning in 2026

For the first time in more than 20 years, the average U.S. rental property's cap rate has fallen below the yield on a 10-year Treasury bond. Before financing, before a mortgage payment, before any of the work of being a landlord, the typical rental's income return is now lower than what an investor could earn by doing nothing but holding a government bond.

That is not a small technical footnote. It is a real repricing of what a rental property is actually paying you to own it.

What a cap rate is, and why it gets compared to a Treasury yield

A cap rate (short for capitalization rate) is a property's net operating income divided by its purchase price. It is the income yield of the deal, calculated before any mortgage: rent, minus vacancy, minus operating expenses like taxes, insurance, and maintenance, divided by what you paid.

The 10-year Treasury yield is the closest thing markets have to a "risk-free" rate: lend the U.S. government money for 10 years, get that yield back, with no vacancy risk, no tenant risk, no roof to replace, and nothing to manage.

Because a rental property carries real risk a Treasury bond does not, cap rates have historically traded above Treasury yields, usually by a comfortable margin, to compensate an investor for taking that risk on. When the spread between the two goes to zero or negative, that compensation disappears. An investor buying at today's cap rate is accepting a lower income return than a Treasury bond pays, for an asset that is illiquid, requires active management, and can lose value.

Why this happened in 2026

Two trends converged.

Treasury yields climbed. The 10-year Treasury yield rose from roughly 1% in 2020-2021 to the 4.5-5% range by 2026, tracking the broader rate environment that also pushed up mortgage rates, credit card APRs, and every other borrowing cost SwitchWize tracks.

Cap rates stayed comparatively flat. Home prices rose faster than rents through the pandemic-era boom. SwitchWize tracks both series directly from FRED, the same government data source behind the chart everyone has been sharing: the national median new-home sale price (FRED series MSPUS) grew at a real compound annual rate of about 4.2% from mid-2011 through early 2026, while the national rent index (FRED's CPI: Rent of Primary Residence) grew at about 3.9% a year over the same stretch. Home prices outran rents, and outran them by enough that the income return on a typical purchase did not keep pace with what Treasury yields were doing.

Put those two trends together and the premium rental buyers used to earn over a risk-free bond, which historically ran a couple of percentage points in the buyer's favor, closed and then went negative.

What a negative spread actually tells you

It is not a verdict on every rental property everywhere. It is telling you something specific about the average deal at today's prices: the unlevered income math increasingly does not work without price appreciation doing the heavy lifting.

For someone deciding whether to buy a new rental today, that is worth sitting with. A deal priced to only "work" if the property appreciates is a different bet than a deal that cash flows on its own. One is an income investment with a bonus if prices rise. The other is a leveraged bet on price appreciation with a rental attached.

For an existing landlord who already owns a property financed at a low, already-locked rate, this changes much less. Your financing cost did not just reset to today's environment, and market rent has generally kept climbing in the same period that pushed Treasury yields up. The spread inversion is mainly a warning about new purchases at today's prices and today's financing, not a verdict on a deal you locked in years ago.

Does leverage rescue the math?

Financing changes the picture, but it does not erase the underlying problem, and it is worth being precise about how.

A mortgage lets you control a larger asset with a smaller amount of your own cash. If the property appreciates, that appreciation applies to the full purchase price, not just to the cash you put in, so your return on cash invested can end up higher than the unlevered cap rate would suggest. That is the entire case for using leverage in real estate.

But the same leverage cuts the other way when things do not go as planned. A vacancy, a slow month, a large repair, or simply financing at a higher rate than you expected hits your cash flow harder when a fixed mortgage payment is sitting on top of it every month, appreciation or not. A cap rate that is already below the Treasury yield, before financing, is not a great starting point to be layering that kind of risk onto.

The honest way to evaluate a specific deal is to look at both numbers: the unlevered cap rate against the Treasury yield (does the income alone clear the risk-free bar), and the leveraged cash-on-cash return with your actual financing and a stated appreciation assumption (does the full picture, appreciation included, clear it). Those can tell very different stories about the same property.

Use the rental yield vs. Treasury calculator to run both numbers on a real deal: enter the purchase price, expected rent, your actual financing, and realistic operating expenses. It compares your unlevered cap rate and your leveraged total return against the live 10-year Treasury yield, and flags negative cash flow or a debt service coverage ratio below what a lender would want to see.

Financing costs are part of the same story

Mortgage rates are the other side of this: the same rate environment that pushed the 10-year Treasury up also pushed financing costs for a rental purchase up. A buyer running the numbers today is contending with both a compressed unlevered spread and a higher cost of the leverage they would use to try to overcome it.

What actually moves the spread back

There are only two ways this kind of gap has historically closed: cap rates rise (property prices fall relative to rent, or rents catch up to price) or Treasury yields fall. Neither happens on a predictable schedule, and neither is something an individual buyer controls. What an individual buyer does control is whether to buy at today's prices and financing, or wait, and whether to run the real numbers on a specific deal rather than assume a national average applies to it.

The bottom line

A national cap rate below the Treasury yield does not mean rental real estate is a bad investment everywhere, and it does not mean every deal is broken. It means the era of assuming a rental automatically beats a risk-free bond on income alone is over, at least for now. Whether a specific property still clears that bar, before or after leverage, is a question worth answering with real numbers instead of a national average in either direction.