Your Home Sold Guaranteed Realty — The Nathan Clark Team

How Is Interest Rate Calculated On Mortgages For Homebuyers?

Wondering, “How is interest rate calculated on mortgages for homebuyers?” Most people know that interest rates are an unavoidable part of taking on a mortgage, but not everyone understands how they are actually calculated. 

More homebuyers are interested in understanding how interest rates are calculated now that they’ve been raised by the Federal Reserve to combat rising inflation. Currently, interest rates for a 30-year mortgage are a little over six percent, and they may keep rising into 2023.

In this post, our award-winning realtors at Your Home Sold Guaranteed Realty — The Nathan Clark Team will discuss all the factors that influence how mortgage interest rates are determined. That way, you can make the most informed decisions when it comes to purchasing your new dream home.

How Is Interest Rate Calculated

Market Factors

There are several market factors that determine mortgage interest rates. One of the biggest is the bond market, where mortgages serve as financial products traded by investors. This is done through mortgage-backed securities. Interest rates are influenced by the supply and demand in the bond market.

If more investors are purchasing mortgage-backed securities, then interest rates are low because demand is at high or steady levels. If investors aren’t buying as many securities, then rates become higher as a way to attract investors with higher returns on their investments.

Another market factor that determines interest rates is the Federal Reserve. Most people know that the Fed can raise or lower rates depending on general economic conditions like inflation. However, the Fed isn’t actually dictating what interest rates should be to lenders.

Lenders borrow money from the Federal Reserve to be able to provide home loans to their customers. When rates are raised, it increases the cost of borrowing for the lenders. As a result, lenders increase the interest rates on their loans to homebuyers to make up for this increased cost. 

Lastly, other factors that influence interest rates are the Secured Overnight Financing Rate (SOFR) and Constant Maturity Treasury Rate (CMT). SOFR and CMT rates only apply to borrowers with adjustable-rate mortgages. 

They are essentially benchmarks that reflect current economic conditions and are used to help lenders determine how much to adjust interest rates. Generally, if these rates increase you can expect the rate on your loan to increase and vice versa.

But these metrics are only used to determine a base rate for the new interest rate. The lender will also add factors related to your financial situation to come up with the final rate on your loan.

Borrower Factors

Aside from external market factors, the interest rate on your home loan is also influenced by your personal financial situation. These borrower factors include:

  • Credit score – paying down your credit balance with timely payments is a good way to improve your standing with lenders.
  • Debt-to-income ratio – It’s generally better to have less debt and a history of making regular payments on your debts. That way, you’ll appear to be a less risky borrower.
  • Occupancy plans – if you plan to use the house as your primary residence (and not a vacation home or rental property), you’ll likely get a lower interest rate.
  • Down payment amount – a larger down payment will lower your loan-to-value ratio and make you look less risky to investors. As a result, they’ll likely give you a lower interest rate.
  • Income stability – If your income is stable or rising, it shows the lender that they can rely on you to keep up with your monthly mortgage payments.

How is Interest Rate Calculated by Lenders

So, how is interest rate calculated on mortgages, exactly? No matter what kind of mortgage you have, your lender actually calculates the interest amount on a monthly basis. This is because interest rates can change so frequently due to shifting market conditions.

This is done by taking your outstanding loan amount, multiplying it by the relevant interest rate, and then dividing that number by 12 to get your monthly payment amount.

If you have a fixed-rate mortgage, you can expect to pay the same amount each month. Adjustable-rate mortgages, on the other hand, change their rates on a monthly or yearly basis, depending on the terms of your mortgage. 

Work With Our Team to Buy a Home in New England

Interest rates aren’t just determined by the lender’s whims. They’re based on a variety of market factors outside of the lender’s control, as well as borrowers’ personal financial circumstances. Understanding how rates are calculated can help you make more informed decisions and find the best home loan for your needs.

If you’re looking for a lender in New England, then our award-winning realtors at Your Home Sold Guaranteed Realty — The Nathan Clark Team have you covered. We’ve been serving home buyers in the area for years. During that time, we’ve developed a network of lenders that we recommend to all our clients.

Aside from that, working with our real estate team comes with several other benefits, like our extensive library of home sellers’ and buyers’ resources. We also offer several buyer’s guarantees that can keep you safe during the home-buying process.

To learn more about working with us at Your Home Sold Guaranteed Realty — The Nathan Clark Team, give us a call at 401-288-3557 or fill out the form below for more information.


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Nathan Clark $ 39 Cedar Swamp Rd, Smithfield RI 02917 401-288-3557

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