4 reasons why Coronavirus makes mortgage rates so unpredictable

Published March 17, 2020

Updated December 10, 2025

Brendan Phillips
by Brendan Phillips

4 reasons why Coronavirus


The spread of COVID-19 has impacted the US economy in unprecedented ways. Even with March 15th’s record-breaking federal interest rate cuts, many homeowners are surprised to find that rates are either higher than expected or changing rapidly from day-to-day.



Here are the four key factors affecting mortgage rates today:

  1. Market volatility
  2. Supply and demand
  3. Federal Reserve actions
  4. Limited lender capacity

Market volatility

Volatility refers to how big the up and down swings of the markets are. When markets are swinging wildly, as they are now, investors attempt to protect themselves from risk. Lenders in particular guard themselves by holding rates steady, even as other interest rates drop. This can lead to borrowers seeing higher-than-expected rates. In fact, last week, mortgage rates had the biggest single day increase since 2016.

Supply and demand

When mortgage rates hit all-time lows in the last two weeks, the number of homeowners applying to refinance skyrocketed. These applications have been funnelling through the pipeline and affecting the price of mortgage backed securities (MBS) — bundles of mortgages that can be bought and sold. Although the applications themselves have not been funded into mortgages, lenders use financial transactions to transfer the risk associated with holding such mortgages in their pipeline. These transactions can change the prices of MBS, and last week they went haywire. Since the price of MBS directly affects how much lenders will be paid for the mortgages they sell, this action affects the rates that can be offered to borrowers. And due to those risk-transferring transactions caused by incoming supply, the price of MBS have dropped. When the price goes down, rates go up – they have an inverse relationship. Which is what we saw happen last week.

Bottom line: with an increased number of mortgages floating around out there, lenders have to sell them for less, and rates go up to compensate.

Federal Reserve actions

On Sunday, March 15th , the Federal Reserve (commonly known as the Fed) made another emergency rate cut, slashing the federal fund’s rate by roughly 1%, down to 0 to 0.25%. However, changes in the federal funds rate don’t really correlate to changes in mortgage rates; the more important news for the borrowers is that the Fed is going to buy $500B of US Treasuries and $200B of mortgage backed securities (MBS).

This is important for two reasons:

  1. The more that US Treasuries are traded, the more freedom banks and financial institutions have to lend money. If trading in these bonds gets too low, it can “lock up” the flow of credit from banks to borrowers. The program is designed to “encourage free flow of lending/capital.”

  2. The more MBS that are bought, the higher the price of MBS (i.e. the Fed is increasing demand for MBS). By buying MBS, the Fed is directly trying to lower rates for borrowers. We will see this action start to take effect over the coming months, though it is uncertain how much of an effect it will really have.

Limited lender capacity

Separate from factors that affect the markets, lenders themselves are strained for capacity to create mortgages. At JP Morgan Chase, mortgage application activity was over three times higher than average. Some large lenders are having trouble returning calls for up to 72 hours, much less making new outbound ones.

Lenders are dealing with this huge influx of new applicants by raising rates, with some lender’s sites quoting up to 4.375%. Lenders are removing themselves from rate comparison sites, ending marketing campaigns, and increasing rates to slow the inflow of new applications. For traditional lenders without an online presence, COVID-19 quarantines will likely put extra stress on their operations.

What this means for you
While we can better understand the factors affecting mortgage rates right now, predicting where rates are headed is a different story. For homeowners in the market for a mortgage, checking rates daily and locking when it makes financial sense to do so is still a sound practice.

To get pre-approved for a Better Mortgage, and see your custom rates, start here.

Related posts

Buying and selling a home at the same time

Buy first or sell first? Learn the pros and cons of each option, the value of a good team, and how to have your cake and eat it, too.

Read now

Understanding the FHA condo approval requirements for buyers

Learn about FHA condo approval requirements for buyers, including eligibility rules, documentation needed, and how to find FHA-approved condominium projects.

Read now

What is mortgage curtailment? Benefits and considerations

Learn what mortgage curtailment is, how it works, its benefits, types, and key considerations to help you pay off your home faster and save on interest.

Read now

Can you use a HELOC to pay off credit card debt? What to know

Explore the pros and cons of using a HELOC to pay off credit card debt. Learn how it compares to other options to make the best choice for you.

Read now

Can you refinance a home equity loan? What you need to know

Can you refinance a home equity loan? Explore your options, including HELOCs and cash-out refinancing, and learn how to qualify for better rates or terms.

Read now

How to refinance an investment property: Complete guide

Discover how to refinance your investment property. Learn the benefits, step-by-step process, and key requirements to maximize your real estate returns.

Read now

The LGBTQ+ homeownership story in numbers

The fight against LGBTQ+ housing discrimination has turned a corner. Learn your rights with the Better.com infographic on LGBTQ+ homeownership.

Read now

How to get serious about your house hunt

Ready to buy a home? Learn how to get serious about your house hunt with practical tips on budgeting, pre-approval, and navigating a competitive market.

Read now

Buying your first home with Better Mortgage

Looking to buy your first home? Discover how buying your first home with Better Mortgage can simplify the process with low rates and expert, tailored support.

Read now

Related FAQs

Interested in more?

Sign up to stay up to date with the latest mortgage news, rates, and promos.