How Global Events Affect Mortgage Rates and the Housing Market

Key Takeaway: Global events (including pandemics, wars, and economic crises) directly affect mortgage rates by shifting investor behavior in the bond market. When uncertainty rises, investors often move money into safer assets like U.S. Treasury bonds, which can push mortgage rates lower in the short term. However, if a crisis triggers inflation — for example, through rising oil prices — rates can rise instead. Understanding this relationship helps you, as a homebuyer, make confident decisions no matter what is happening in the world.

If you’ve been watching mortgage rates lately, you’ve probably noticed they move with the news. Whether it is a conflict overseas, a pandemic, or a trade dispute, suddenly, rates are shifting. That’s not a coincidence.

Global events can move mortgage rates within days, sometimes within hours. For most people, that connection is never explained. It just feels like the market is unpredictable.

This guide breaks down why that happens, what history can teach us, and what you can do to stay ahead of it.

What Actually Drives Mortgage Rates?

Your lender doesn’t simply decide what rate to charge you. Mortgage rates are shaped by forces in the global financial markets, and one indicator matters more than any other.

The Bond Market Connection:

Mortgage rates are controlled by the changes in the MBS markets and not directly by the 10-year treasury. They typically move together but not always. Recently, there has been more divergence negatively for MBS than in the 10-year. 

One of the most important factors in mortgage rate pricing is the 10-year U.S. Treasury note yield. When you buy a U.S. Treasury bond, you are lending money to the federal government in exchange for interest payments over time. That interest rate is called the yield.

Mortgage lenders price their loans relative to this yield. When the 10-year Treasury yield goes up, mortgage rates go up. When it falls, mortgage rates tend to follow.

Here’s a simple way to think about it: the bond market is like a mood ring for the economy. When investors feel nervous, they buy Treasury bonds because they are considered one of the safest investments in the world. Because they are backed by the credit of the US Government, that demand drives bond prices up and yields — and mortgage rates — down. When investors feel confident, they move money into riskier investments. Bond demand drops, yields rise, and mortgage rates climb.

The Federal Reserve’s Role

The Federal Reserve (the Fed) doesn’t directly set your mortgage rate. It sets the federal funds rate, or the overnight lending rate between banks. But Fed decisions matter because they shape inflation expectations, which influence bond yields, which then influence mortgage rates.

When the Fed raises rates to fight inflation, mortgage rates typically rise. When the Fed cuts rates to stimulate the economy, mortgage rates tend to ease.

“The actual cut or raise in rates does little to actually affect mortgage rates,” said David Bridges, SVP, FL Regional for First Heritage Mortgage (NMLS ID #222490). “It is the market expectation of what they are going to do. It is the same principle as why, when a stock has a blowout quarter, its price drops. All about what the market expects and if that was met or not. Frequently, what the Fed Chair says at the press conference does more to move rates than the actual announcement from the meeting.”

Mortgage-Backed Securities

When lenders issue mortgages, they often package those loans and sell them to investors on the secondary market as mortgage-backed securities (MBS).

“I like to describe an MBS as stock in someone’s mortgage”, said David Bridges. “Mortgage companies bundle a bunch of mortgages and then chop them into tiny pieces like stock in a company. Those pieces are then traded on a market. The supply/demand for them is what causes rates to change.  The rate investors demand on those securities influences the rates lenders can offer to borrowers.”

During the COVID-19 pandemic, the Fed purchased large amounts of MBS to hold rates down. When it stopped, rates moved sharply higher. This is one reason the post-pandemic rate spike was so dramatic.

What is “Flight to Safety” and How Does it Move Rates?

When something significant happens in the world — a war, a pandemic, a financial crisis — investors get nervous. They move money out of riskier assets and into safer ones. U.S. Treasury bonds are one of the most common destinations.

Here is how that chain reaction works:

1. A major global event creates economic uncertainty
2. Investors sell riskier assets, like stocks, and buy U.S. Treasury bonds and MBS
3. Increased demand drives Treasury bond prices up
4. When bond prices rise, yields fall
5. Mortgage rates, which track Treasury yields, tend to drop in the short term

This is why bad global news can sometimes briefly lower mortgage rates. But there’s an important exception: if the crisis also triggers inflation — for example, by causing oil prices to spike — rates can quickly reverse and move higher instead.

Most major events involve some of both. That’s why the initial market reaction is often more dramatic than the long-term outcome.

What is Inflation and Why Does it Matter for Mortgage Rates?

Inflation came up in the last section as the key exception to the flight-to-safety effect. It’s worth taking a moment to explain what it actually is, because it shows up everywhere in this conversation.

Inflation is the gradual increase in the price of goods and services over time. When inflation rises, your dollar buys less than it used to. A gallon of milk, a tank of gas, a bag of groceries — they all cost more. That’s inflation at work.

A small amount of inflation is normal and expected. The Federal Reserve targets an annual Core (excluding volatile food and energy prices) inflation rate of around 2%. That level is considered healthy for a growing economy. The problems start when inflation climbs well above that target — as it did in 2021 and 2022, when it reached levels not seen in over 40 years.

How is Inflation Measured?

The two most widely watched inflation gauges are:

1. CPI (Consumer Price Index) — tracks the average price change of a basket of everyday goods and services like food, housing, gas, and healthcare. This is the number you’ll most often hear reported in the news.
2. PCE (Personal Consumption Expenditures) — the Federal Reserve’s preferred inflation measure. It captures a broader range of spending and tends to run slightly lower than CPI.

Both are released monthly, and both are closely watched by the Fed, bond market investors, and mortgage lenders.

Why Does Inflation Push Mortgage Rates Higher?

When you buy a bond, you agree to receive a fixed interest payment over time. If inflation is running high, those future payments are worth less in real terms — because prices will be higher when you receive them. To compensate for that risk, investors demand a higher yield before they’ll buy bonds.

When Treasury yields rise, mortgage rates follow.

This is why the Fed raises interest rates when inflation gets out of hand. Higher rates slow down borrowing and spending, which cools the economy and eventually brings prices back down. It works — but the side effect is more expensive mortgages for homebuyers.

The reverse is also true. When inflation falls back toward the Fed’s 2% target, bond investors are willing to accept lower yields, Treasury rates ease, and mortgage rates tend to come down with them. That’s the environment the housing market has been gradually moving toward through 2025 and into 2026.

How Did COVID-19 Affect Mortgage Rates and the Housing Market?

The COVID-19 pandemic is one of the clearest examples in recent history of how a global event can reshape the housing market — long after the initial headlines fade.

When COVID-19 brought the global economy to a near-standstill in early 2020, the Fed cut its policy rate to near zero and began purchasing trillions of dollars in Treasury bonds and MBS. The result for homebuyers was dramatic.

Mortgage rates fell below 3% for the first time in recorded history in July 2020. By January 2021, the average 30-year fixed rate hit an all-time low of 2.65%.

Those record-low rates, combined with government stimulus, remote work demand, and a desire for more space, produced a housing market unlike anything in recent memory:

1. Home prices surged. Prices rose nearly 20% year-over-year by mid-2021.
2. Suburban and smaller-city markets exploded. Buyers moved away from dense urban centers to take advantage of lower costs and more space.
3. Inventory tightened. Forbearance programs allowed homeowners to defer payments and stay in their homes, keeping supply off the market and driving prices even higher.

But those emergency-low rates were never meant to be permanent. When inflation surged in 2021 and 2022, the Fed reversed course aggressively. The 30-year mortgage rate climbed from around 3% at the start of 2022 to a peak of 7.79% in October 2023.

That rapid increase created what analysts call the “lock-in effect.” Homeowners who had locked in 2.65% or 3% rates had no financial reason to sell and take on a new mortgage at 7%, even if they needed to move due to a change in family size or to take a new job. Housing inventory dried up. With fewer homes on the market, prices stayed high even as buyer demand cooled, creating the worst housing affordability crisis in a generation.

The COVID era is a textbook example of how a single global event can reshape the housing market for years.

How Has the U.S. Conflict with Iran Affected Mortgage Rates?

As 2026 began, there was cautious optimism in the housing market. The Fed had cut rates three times in late 2025, and by February 26, 2026, the average 30-year fixed mortgage rate dipped below 6% for the first time since 2022, settling at 5.98%.

Four days later, the United States launched military operations against Iran.

From a purely economic standpoint, the effects were immediate and measurable:

1. Oil prices surged. Crude oil rose from roughly $71 per barrel on March 2 to over $115 per barrel by March 9 — the first time it had crossed $100 since 2022.
2. Inflation expectations rose. Rising energy prices feed into transportation, food, and manufacturing costs, all of which factor into the inflation data the Fed watches most closely.
3. Mortgage rates moved higher. The 30-year fixed rate climbed from 5.98% to 6.15% in the days following the start of operations.

That may sound like a small move. But even a 0.17% rate increase adds meaningful cost over the life of a mortgage on a $400,000 loan.

As with most geopolitical events, the long-term impact will depend on how the situation develops — how long the conflict lasts, whether oil prices remain elevated, and how the Fed responds to any inflation pressures that emerge. This is a good example of the tension between fear (which can push rates down through flight-to-safety) and inflation (which pushes rates up). When a conflict primarily affects energy markets, inflation tends to win out in the near term.

How Do Trade Wars and Tariffs Affect the Housing Market?

Trade disputes create a more complicated picture than outright conflict.

Economic uncertainty from tariffs can initially push investors toward Treasury bonds — the flight-to-safety effect — which can briefly push mortgage rates lower. But tariffs also raise the cost of imported construction materials like lumber and steel. When it costs more to build homes, fewer homes get built. Less housing supply, combined with steady demand, keeps home prices elevated — and worsens housing affordability even if mortgage rates aren’t rising.

“These increases in pricing, though, are only one-time increases, unlike the persistent inflation caused by higher energy costs,” said David Bridges. “In fact, tariffs can actually push rates lower through contraction of the economy. So, you see the initial spike in rates and then the fall as the ‘tariff effect’ wanes.”

This is a reminder that global events don’t only affect the housing market through mortgage rates. Supply chains, construction costs, and consumer confidence all play a role.

What Do Global Events Mean for Housing Affordability?

Understanding the mechanics is useful. But what does it actually mean for your ability to buy a home?

The most direct way to see the impact is through monthly payments. Here’s how the principal and interest payment on a $400,000 loan changes at different interest rates:

Interest Rate	Monthly Payment (P&I)
3.00%	$1,686
5.00%	$2,147
6.50%	$2,528
7.00%	$2,661
7.79% (2023 peak)	$2,867

The difference between the pandemic-era low and the 2023 peak is more than $1,180 per month on a $400,000 loan. For millions of buyers, that gap was the difference between qualifying for a mortgage and being priced out entirely.

Home prices make things harder. Because so many pandemic-era homeowners are holding onto their low-rate mortgages, inventory has stayed historically tight. Fewer homes for sale mean sellers have pricing power. This keeps values high even as higher rates reduce what buyers can afford.

What Should Homebuyers Do During Uncertain Times?

Trying to time the mortgage market around global events is very difficult, even for professional traders. Rates can drop sharply on fear, then recover — or spike on inflation concerns, then pull back. Sitting on the sidelines waiting for the “perfect” rate means you may miss the right home, watch prices rise further, or spend more months building someone else’s equity instead of your own.

Here’s a chart that compares buying a home in 2020, when rates were at their lowest, against 2023, when rates started to rise from their previous lows:

Comparing a $500,000 Home: 2020 Lows vs. 2023 Highs

The more reliable approach is preparation. Here’s what that looks like:

Talk With Your Loan Officer First

Your loan officer can explain how current market conditions affect your specific situation, what loan types make the most sense, and how to position yourself to act quickly if conditions improve.

Get Pre-Qualified Before Rates Move

Getting pre-qualified puts you in a position to move fast if rates dip. It also signals to sellers that you are a serious buyer, which matters in a competitive market.

Understand Your Rate Lock Options

A rate lock is an agreement with your lender that guarantees your interest rate for a set period (typically 30 to 60 days) while your loan is processed. In a volatile market, a rate lock protects you from being hit with a higher rate between application and closing. Ask about extended lock options if you’re purchasing new construction or working with a longer closing timeline.

Choose the Right Loan Type for Your Situation

In uncertain times, the stability of a fixed-rate mortgage is often worth the trade-off. You know exactly what your payment will be for the life of the loan, no matter what happens in the world next year or five years from now.

Adjustable-rate mortgages (ARMs) offer lower initial rates, which can make sense if you plan to sell or refinance within a few years. But in a volatile environment, understand the risk of rate resets before signing.

Know Which Indicators to Watch

You don’t need to become a financial analyst to stay informed. A few key indicators tell most of the story:

• 10-year Treasury yield — the most direct leading indicator for mortgage rate direction
• Federal Reserve meeting dates — Fed guidance shapes market expectations weeks in advance
• CPI (Consumer Price Index) reports — released monthly; shows whether inflation is rising or falling
• Oil prices — a key inflation input, especially during geopolitical conflicts

FAQs About Global Events and Mortgage Rates

Do mortgage rates always go down during a war or crisis?

Not necessarily. The initial reaction to a geopolitical crisis is often a “flight to safety” that can briefly push mortgage rates lower. However, if the crisis triggers inflation — such as through rising oil prices — rates can quickly reverse and move higher. The long-term impact depends on the nature and economic consequences of the event.

Does the Federal Reserve directly set mortgage rates?

No. The Fed sets the federal funds rate — the overnight lending rate between banks. This influences inflation expectations, which affect bond yields, which drive mortgage rates. The Fed has significant indirect influence, but your mortgage rate is ultimately shaped by the bond market.

How does inflation affect mortgage rates?

Inflation erodes the value of fixed-income investments like bonds. When inflation rises, investors demand higher yields to compensate, which pushes mortgage rates higher. This is why the Fed raises interest rates to fight inflation — it helps slow the economy and bring price growth down, which eventually allows mortgage rates to ease.

What is the bond market, and why does it matter for homebuyers?

The bond market is where investors buy and sell government and corporate debt. For homebuyers, the most important part is the 10-year U.S. Treasury note. When demand for Treasury bonds rises, their yields fall — and mortgage rates tend to follow. Watching the 10-year Treasury yield is the best way for a non-professional to anticipate where mortgage rates are headed.

Should I wait for mortgage rates to drop before buying a home?

Most housing experts advise against waiting for a specific rate target. Rates are difficult to predict even for professionals. While you wait, home prices may rise, your savings may not keep up with the market, and you will continue building no equity.

A better approach is to get pre-approved, understand what you can comfortably afford today, and make a decision based on your life timeline — not the news cycle. If rates drop significantly in the future, refinancing is always an option.

How do oil prices affect mortgage rates?

Oil prices are a key inflation input. When oil spikes (often triggered by geopolitical conflict or supply disruptions), the cost of transportation, manufacturing, and food all rise. Those higher costs feed into inflation data, which can prompt the Fed to keep rates higher for longer. That, in turn, keeps mortgage rates elevated.

Global events don’t happen in a vacuum. They ripple through financial markets, shape investor behavior, move the bond market, and ultimately affect the interest rate on your mortgage.

The underlying logic is straightforward: uncertainty makes investors cautious, caution drives money into safe assets like Treasury bonds, yields fall, and mortgage rates tend to follow. When a crisis also triggers inflation — as oil shocks often do — that effect reverses.

What doesn’t change, regardless of what’s happening in the world, is the value of being prepared. Knowing your credit score, understanding what you can afford, having a pre-approval in hand, and working with a loan officer who monitors the market daily puts you in a position to act when the moment is right.

Connect with a First Heritage Mortgage loan officer today. Our loan officers follow the bond market, Fed policy, and rate trends every day and help you make the best decision for your situation.