The interest rate on your mortgage can have a major impact on both your monthly payment and the total amount you pay over the life of the loan.
Many homebuyers assume mortgage rates are determined solely by their credit score. While credit can play an important role, lenders consider several other factors when determining the rate available to a borrower.
Understanding these factors can help you better evaluate mortgage offers and prepare for the homebuying process.
What Is a Mortgage Interest Rate?
A mortgage interest rate is the percentage charged by a lender for borrowing money to purchase a home.
For example, if you borrow $300,000 at a fixed interest rate, the rate is used to calculate the interest portion of your mortgage payments according to the terms of the loan.
Your interest rate affects:
- Monthly principal and interest payments
- Total interest paid over the loan term
- Overall cost of borrowing
- Potential refinancing opportunities in the future
Even a relatively small difference in the interest rate can make a meaningful difference over many years.
What Factors Determine Your Mortgage Interest Rate?
Mortgage rates are influenced by both broader economic conditions and details specific to your mortgage application.
Some of the most important factors include:
- Credit history and credit score
- Loan amount
- Down payment
- Loan-to-value ratio
- Loan type
- Loan term
- Property type
- Occupancy
- Market conditions
- Overall borrower risk
Because these factors interact with one another, two borrowers purchasing similar homes may receive different mortgage rate offers.
How Does Your Credit Score Affect Your Mortgage Rate?
Your credit profile can influence the interest rate and loan terms available to you.
A stronger credit history can demonstrate a history of managing debt responsibly and may help a borrower qualify for more favorable financing.
A lower credit score does not necessarily prevent you from obtaining a mortgage, but it can affect the available loan options and pricing.
Before applying, review your credit information and address potential errors or issues when appropriate.
Does Your Down Payment Affect Your Interest Rate?
Your down payment can influence your loan-to-value ratio, which can affect mortgage pricing.
A larger down payment generally means you are borrowing a smaller percentage of the home’s value.
For example, putting 20% down means the mortgage represents approximately 80% of the purchase price.
A lower loan-to-value ratio can potentially improve the terms available to some borrowers.
However, putting more money down is not automatically the right financial decision for everyone.
You should also consider how much cash you will have remaining for closing costs, emergency savings, repairs, and other expenses.
What Is Loan-to-Value Ratio?
Loan-to-value ratio, or LTV, compares the mortgage amount with the value of the property.
For example, if you purchase a $400,000 home and borrow $320,000, the LTV is 80%.
LTV is an important factor lenders may consider when evaluating mortgage risk.
A lower LTV can sometimes result in more favorable mortgage pricing or reduced mortgage insurance requirements, depending on the loan program.
Does the Type of Mortgage Affect the Interest Rate?
Yes.
Different mortgage programs have different pricing structures and risk characteristics.
For example, interest rates can differ between:
- Conventional mortgages
- FHA loans
- VA loans
- USDA loans
- Jumbo mortgages
- Adjustable-rate mortgages
The best option depends on your financial circumstances, eligibility, and long-term goals.
Comparing loan programs based solely on the advertised interest rate can be misleading because other costs and terms also matter.
Does the Loan Term Affect Your Rate?
The length of the mortgage can affect the interest rate.
A 15-year mortgage, for example, may have a different rate than a 30-year mortgage.
However, a lower interest rate does not necessarily mean a lower monthly payment.
A shorter loan term can require substantially higher monthly payments because the principal must be repaid over fewer years.
When comparing loan terms, consider both the interest rate and the payment you can comfortably afford.
How Do Economic Conditions Affect Mortgage Rates?
Mortgage rates are also influenced by broader financial markets and economic conditions.
Factors such as inflation, economic growth, employment conditions, and expectations about monetary policy can influence the overall interest-rate environment.
This means mortgage rates can change even when your personal financial situation has not changed.
That is why the rate available when you begin researching a home may be different from the rate available when you eventually apply or lock your mortgage.
Does the Property Affect Your Mortgage Rate?
It can.
The type and use of the property can influence mortgage pricing and eligibility.
For example, financing a primary residence may be treated differently from financing:
- A second home
- An investment property
- Certain multifamily properties
- Other specialized property types
The lender may consider the additional risk associated with the property when determining loan terms.
Can Your Income Affect Your Mortgage Rate?
Income is an important part of mortgage qualification, although it does not necessarily work as a simple “higher income equals lower rate” calculation.
Lenders generally evaluate whether your income is sufficient and reliable relative to your debts and proposed mortgage payment.
The type of income can also matter.
Borrowers with salary income may have different documentation requirements from borrowers who receive:
- Commission income
- Bonus income
- Self-employment income
- Rental income
- Investment income
- Other variable income
Your overall financial profile is what matters.
Does the Size of the Loan Affect Mortgage Pricing?
It can.
Different loan amounts can fall under different pricing structures.
A very large loan may require a jumbo mortgage or another specialized financing option if it exceeds applicable conforming loan limits.
Because jumbo loans can have different underwriting and pricing requirements, borrowers should compare the complete terms rather than assuming that a larger loan will simply receive the same pricing as a smaller one.
What Is a Rate Lock?
A mortgage rate lock is an agreement that holds a specific interest rate for a defined period, subject to the terms of the lock.
Rate locks can protect borrowers from market increases during the period before closing.
However, the details of rate locks vary, including the length of the lock and what happens if the transaction takes longer than expected.
Your mortgage professional can explain the available options for your specific loan.
Should You Always Choose the Lowest Mortgage Rate?
Not necessarily.
The lowest advertised interest rate may come with additional costs, restrictions, or different loan terms.
When comparing mortgage offers, consider:
- Interest rate
- Annual percentage rate
- Loan costs
- Discount points
- Monthly payment
- Loan term
- Mortgage insurance
- Cash required at closing
- Other applicable fees
A slightly higher rate with significantly lower upfront costs could potentially be more appropriate depending on how long you expect to keep the loan.
Can You Get a Better Mortgage Rate?
You may be able to improve your available mortgage pricing by strengthening aspects of your financial profile.
Potential steps include:
Improving Your Credit
Review your credit reports and address inaccurate information when appropriate.
Avoid unnecessary new credit activity while preparing for a mortgage.
Increasing Your Down Payment
A larger down payment can reduce your LTV and may improve available financing terms in some circumstances.
However, make sure you retain enough cash for other homeownership expenses.
Reducing Existing Debt
Lowering certain debts can improve your overall financial profile and may reduce your debt-to-income ratio.
Comparing Loan Options
Different lenders and mortgage programs can offer different pricing and terms.
Comparing multiple options can help you understand what is available for your situation.
How Does Debt-to-Income Ratio Affect Your Mortgage?
Debt-to-income ratio, or DTI, compares your recurring monthly debt obligations with your qualifying income.
Lenders use DTI as one factor when evaluating whether you can reasonably manage the proposed mortgage payment.
A lower DTI can indicate that less of your income is already committed to debt payments.
However, DTI is only one part of the mortgage evaluation, and the importance of individual factors can vary by loan program.
What Is the Difference Between Interest Rate and APR?
The interest rate represents the cost of borrowing expressed as a percentage.
The annual percentage rate, or APR, is designed to provide a broader representation of the cost of the mortgage by incorporating certain fees and charges along with the interest rate.
This means the APR can be useful when comparing mortgage offers with different upfront costs.
However, APR should still be considered alongside the actual loan terms and your expected time in the mortgage.
How Should You Compare Mortgage Rates?
When comparing mortgage options, request detailed information from each lender.
Look beyond the headline rate and compare:
- Interest rate
- APR
- Monthly principal and interest payment
- Total estimated closing costs
- Discount points
- Mortgage insurance
- Loan term
- Cash needed to close
- Rate-lock terms
- Other loan features
This gives you a more complete picture of the cost of each mortgage.
Final Thoughts
Your mortgage interest rate is influenced by much more than your credit score. Your down payment, loan-to-value ratio, mortgage type, loan term, property, financial profile, and broader market conditions can all affect the financing available to you.
Instead of focusing exclusively on getting the lowest possible rate, consider the complete cost and structure of the mortgage. Comparing rates alongside fees, monthly payments, loan terms, and your long-term plans can help you choose financing that fits your financial situation.
If you are preparing to buy a home, speaking with a mortgage professional early can help you understand which factors are likely to affect your rate and what steps you can take before applying.
