How Would Mortgage Rates Get Down to 5%?

Potential home buyers are obviously waiting for rates to come down, given the very low number of mortgage applications. Now we know that there is hope for rates going down to the low 5s, but no one really explains the nuts and bolts of how you get there. We do that here.

The underlying data for a 5% rate

For a 5% conventional 30-year fixed, three things would have to line up. The 10-year Treasury yield would need to fall to about 3%, from just under 5% today. The mortgage spread would need to tighten to about 2 points, from roughly 2.3 now. And for the 10-year to get to 3%, inflation would likely need to run near 1%. That combination isn’t impossible, but it would take years of cheaper oil, steady policy and low inflation.

Our advice: if you’re waiting for 5% before you buy or refinance, plan around 6% as the realistic floor. If rates go lower than that, treat it as a bonus.

Hear the full conversation

On Beyond the Rate, Charlie and Will Braden start from a 5% mortgage rate and work backward to what the bond market and inflation would have to do to get there. Listen to the episode →

Where rates are right now

The bond market rallied this week without a clear reason. The 10-year Treasury yield slipped back under 5%, to about 4.95%, even though no major economic data came out. The Nasdaq fell about 2% the same day, and some reports pointed to tougher words from President Trump toward Iran. It could also just be that big investors are finally finding a guaranteed 5% to 5.5% return on Treasuries and mortgage-backed securities hard to pass up.

Whatever the cause, the average 30-year fixed is back to about 7.3%, down from around 7.6% a couple of weeks ago. Plenty of people are still waiting for rates to drop much further. So we tried to work out what would actually have to happen to get them to 5%.

Working backward from a 5% mortgage rate

Mortgage rates are built on two relationships. Change either one and you change the rate.

Step 1: The mortgage spread

The mortgage spread is the difference between the average 30-year fixed rate and the 10-year Treasury yield. The two move together closely because they compete for the same investors. Treasuries are the safest investment there is. Mortgage-backed securities come close behind, but they carry a little more risk, mainly that borrowers pay off or refinance early, so they pay a bit more.

Historically that spread has run a little under 2 points. It has been below 1 point and above 3 points at the extremes, and it ran wide through 2023. Today it’s roughly 2.3 points (7.3% minus 4.95%). That leaves some room. If investors keep choosing mortgage bonds over Treasuries, the spread tightens and mortgage rates fall even if Treasury yields don’t move.

To get a 5% mortgage rate with a 2-point spread, the 10-year Treasury yield needs to be at 3%. That’s about two full points below where it is now.

Step 2: The gap between inflation and the 10-year

When you buy a bond, you’re buying money, and inflation decides what that money is worth by the time you get it back. If a Treasury pays 2% while inflation runs 5%, you lose ground every year. That’s why bond investors demand a yield above inflation. For the big funds moving hundreds of millions of dollars, a 5% Treasury yield with 6% inflation is a losing trade.

Inflation moves around a lot more than yields do. Over the long run, though, the 10-year yield has averaged roughly 2 points above inflation. On that rule of thumb, a 3% 10-year means inflation running around 1%.

Piece	Today	Needed for a 5% mortgage
Average 30-year fixed	7.3%	5.0%
Mortgage spread	2.3 points	~2.0 points
10-year Treasury yield	4.95%	~3.0%
Inflation (CPI, year over year)	3.4%	~1%

Today’s figures as of the week of October 19, 2026. The “needed” column uses long-run rules of thumb: a mortgage spread of about 2 points and a 10-year yield about 2 points above inflation. Rates are national averages for prime conventional loans and will differ from an individual quote.

Has this happened before? The late 2010s

Yes. A 5% rate isn’t like the pandemic-era 3% rates, which we’d call unattainable and shouldn’t want back. In the years leading up to COVID, conventional rates sat at or below 5%, and VA and FHA rates were often lower still.

Year	CPI inflation	10-year Treasury	30-yr fixed average
2016	1.3%	1.84%	3.65%
2017	2.1%	2.33%	3.99%
2018	2.4%	2.91%	4.54%
2019	1.8%	2.14%	3.94%

Annual averages. Sources: U.S. Bureau of Labor Statistics (CPI-U, annual average change); Federal Reserve, 10-year Treasury constant maturity; Freddie Mac Primary Mortgage Market Survey.

Notice the gap between inflation and the 10-year in those years: often under 1 point, not 2. That’s how rates stayed under 5% with inflation near 2%. But that was a decade of near-zero Fed policy and heavy Fed bond buying. Counting on that narrow gap to come back is the hopeful version of the math, not the realistic one.

What would push inflation that low

1. Cheaper oil

This comes first. Gas would need to settle somewhere around $2.50 to $2.80 a gallon, and that most likely means a lasting resolution to the conflict with Iran. As we covered in our look at rates under 7% by the holidays, most of the inflation pressure holding rates up right now traces back to oil.

2. Less government spending and debt

Too many dollars in circulation is inflation by definition. Federal spending grew a lot in recent years and has been cut back more recently. That helps, but only if it holds.

3. A lighter regulatory load and real competition

Inflation stayed low through the 2010s in two very different economies: a slow one under Obama and a strong one during Trump’s first term. In the second, fewer regulations lowered costs for businesses, and competitive markets kept prices in check. When a competitor sells something just as good, you can’t simply raise your price. Regulatory costs get passed on to buyers, and vehicle rules like fuel-economy standards add to what a new car costs.

The catch: the debt itself

There’s a pull in the opposite direction. With federal debt this large, some economists argue the government is better off with inflation running at 2% to 3%, because inflation shrinks the real value of what it owes. That idea is sometimes called inflating away the debt. If that’s the path, 1% inflation and 5% mortgage rates are hard to reach, even if everything else goes right.

What we are watching

• The 10-year Treasury yield. Holding under 5% is the first step. Getting to 3% would take years, not weeks.
• Mortgage spreads. This is the quickest path to lower rates. Going from 2.3 points to 2 is worth about a quarter point on its own.
• Monthly inflation readings, especially energy prices.
• Oil and Iran headlines. This is still the biggest single swing factor.

What this means if you are buying or refinancing

Buying: If you’ve been holding out for 5%, be honest about what that would take: inflation near 1%, a 10-year near 3%, and several years of everything going right. A plan built on 6% is realistic. Rates have dipped to around 6% a few times in the last several years. If you find the right house, a payment that works at today’s rate with room to refinance down is a better plan than waiting on a number that may not come.

Refinancing: Anyone can look up these numbers. Watch the 10-year, the spread and inflation instead of headlines. Send us your current rate and balance, and we’ll tell you the rate where a refinance starts to make sense for you, so you’ll know it when you see it.