A 5% Cap Rate or Pay the Tax?

A common situation in 2026: you’ve sold a property with a large gain, you’re lining up a 1031 exchange, and the replacement properties you’re shown come in at 5–7% cap rates with modest rent growth. None of them are bad. None of them are exciting. And the question that follows is a fair one: should you take a 5% deal just to keep the tax deferred, or pay the tax and invest the rest somewhere simpler?

Most advice stops at “a 1031 defers your taxes, so do it.” That’s true, but deferral has a value you can measure, and so does the deal you’d be buying to get it. Put both on the same page and the answer is usually clearer than it feels.

What the deferral is actually worth

A 1031 exchange doesn’t remove the tax. It lets you keep the money that would have gone to the tax invested for as long as you hold the replacement property (or keep exchanging). So the value of the exchange is whatever that deferred tax earns while you hold it.

A simple all-cash example, with round numbers:

• Sale price: $2,000,000
• Adjusted basis: $400,000
• Gain: $1,600,000
• Assumed combined tax rate (federal capital gains, depreciation recapture, net investment income tax, state): 30%, so $480,000 in tax

That leaves two paths:

	Pay the tax	Do the exchange
Money to invest	$1,520,000	$2,000,000
Invested in	Treasuries at 4.25%	Rental property
Annual income	$64,600	Depends on the property
Depreciation	None	Continues on the carried-over basis
Equity growth	None	Appreciation, historically near or above inflation over the long term

Setting aside equity growth and continued depreciation, the exchange beats paying the tax if the property earns more than $64,600 a year on $2,000,000. That’s a break-even yield of 3.23%.

There’s a shortcut: in the simple all-cash case, the break-even yield is the Treasury rate multiplied by the share of the sale you’d keep after tax. Here the $480,000 tax is 24% of the $2,000,000 sale, so the break-even is 4.25% × 0.76. The larger your tax bill relative to the sale, the lower the yield you can accept on the replacement property and still come out ahead. That’s the real value of the deferral, in one number.

Is the 5% really 5%?

On that test a 5% cap rate looks comfortable: $100,000 a year against a $64,600 hurdle. But a cap rate on a listing is based on the seller’s net operating income (NOI), and a listing pro forma usually reflects the seller’s operating costs, not the ones you’ll pay as the new owner.

Re-run the same $2,000,000 property with the expenses you’ll actually pay:

	As listed	Your numbers
NOI as listed	$100,000	$100,000
Property tax reassessed at your purchase price		−$8,000
Insurance at a current quote, not the seller’s old policy		−$4,000
Property management (often missing from owner-managed listings)		−$10,000
Capital reserves (roof, HVAC, turnover)		−$8,000
NOI	$100,000 (5.0%)	$70,000 (3.5%)

At 3.5% the property still clears the 3.23% hurdle, by about $5,400 a year, and you keep the potential for equity growth. In return you take on vacancy, tenants, repairs and a building you can’t sell in an afternoon. Treasuries carry none of that.

Doesn’t leverage fix it?

At today’s rates, usually not. A 30-year loan at 7% costs about 8% a year in principal and interest (its loan constant). Borrowing at 8% to buy an asset yielding 3.5% lowers your return; this is called negative leverage.

Take the same $2,000,000 of equity and buy $4,000,000 of property at 50% loan-to-value (LTV):

• NOI at 3.5%: $140,000
• Debt service on $2,000,000 at 7%: about $79,800
• Cash flow: $60,200, less than the $70,000 you’d earn buying all-cash

Leverage only helps when the property’s real yield is above the loan constant, or when you’re counting on appreciation to do the work. If your relinquished property carried debt, you’ll need to replace it (or add cash) to defer the full gain. But that’s a reason to borrow carefully, not a reason to assume borrowing improves the deal.

What actually changes the answer

If the numbers above describe your options, these are the levers that matter:

1. Appreciation and rent growth. Treasuries don’t grow; property can. At 3% a year, appreciation on $2,000,000 is $60,000 of value a year, which is why real estate can still win at a thin yield. It’s also the least certain number in the analysis, so test what happens at 0–1%.
2. Where you buy. A 5% cap rate in a high-cost coastal market and a single-family rental (SFR) in a Midwest or Southern metro with a better rent-to-price ratio are different investments. Higher-yield markets come with their own trade-offs (you’ll likely need a property manager you trust from a distance), but they’re where after-expense yields can clear the hurdle with room to spare.
3. Diversification. A 1031 exchange doesn’t require a single replacement property. Several smaller properties spread tenant, market, vacancy, weather, cash-flow and appreciation risk, so you can build a stable, balanced portfolio. Later, they also let you sell or refinance one at a time instead of all at once.
4. Partial exchange. You can exchange part of the proceeds and take the rest as taxable cash (“boot”). If only some of the candidates clear the hurdle, you don’t have to force the rest.
5. Paying the tax. If nothing clears the hurdle after realistic expenses, paying the tax is a legitimate answer, not a failure. There’s no penalty for starting an exchange and not finishing it.

Two longer-term factors are worth raising with your CPA before deciding: your depreciation carries over from the relinquished property (so recapture is deferred, not cleared), and under current law heirs generally receive a stepped-up basis. Both can change how much the deferral is really worth to you.

Running the test on real properties

The useful habit is to run this test on every candidate before it goes on your identification list: re-run the expenses yourself, compute the after-expense yield, and compare it to your own hurdle. Doing that across ten properties in three markets within 45 days is where the task becomes daunting. Finding the properties in the first place is like looking for a needle in a haystack, and then come the disjointed spreadsheets, folders and notes scattered everywhere.

SFR Portfolio Builder finds investable properties and analyzes them rigorously against your investment goals. Listings in its property database come with researched rent, property tax and insurance figures instead of the seller’s. Its AI research helps you discover investment trends and local conditions in each market. The Fiduciary Filter scores each property against your own return thresholds, including an inflation-adjusted Capital Preservation check, and returns a clear INVEST, CAUTION or REJECT verdict. Thirty-year projections show whether appreciation and rent growth, not just year one, carry the deal. And portfolio-level analysis puts everything you need for the decision in one place.

This article is general information, not tax advice. Tax rates, recapture and state rules vary; confirm your numbers with your CPA or tax attorney before your sale closes.