
A variable rate mortgage can be a good option for some homeowners, but it's essential to understand the pros and cons before making a decision.
Variable rate mortgages are tied to the lender's prime rate, which can fluctuate over time. This means your monthly payments can increase or decrease when the interest rate changes.
One of the main advantages of a variable rate mortgage is that it often has a lower interest rate compared to a fixed rate mortgage. This can result in lower monthly payments.
However, the interest rate on a variable rate mortgage can increase significantly, leading to higher payments. In some cases, this can even lead to mortgage stress.
Some lenders may offer variable rate mortgages with a cap on how high the interest rate can go, which can provide some stability for homeowners.
What Is a Variable Rate Mortgage?
A variable rate mortgage, also known as an adjustable-rate mortgage (ARM), is a type of home loan where the interest rate changes throughout the life of the loan. The initial fixed-rate period is typically five, seven or 10 years, after which the rate becomes variable for the remaining life of the loan.
Your estimated payment and rate may change during the adjustable-rate period, depending on market conditions at the time of conversion to the variable rate and during the adjustment period thereafter. An increase or decrease in the rate depends on the market.
A jumbo ARM loan can exceed the conforming loan limit of $806,500, and in high-cost areas like Alaska and Hawaii, it can go up to $1,209,750.
How to Get a Variable Rate Mortgage
To get a variable rate mortgage, you can start by contacting banks or mortgage lenders that offer adjustable-rate mortgages (ARMs). These mortgages have a fixed rate for a predetermined initial term, after which the rate adjusts regularly as determined by the loan terms.
You can apply for a variable rate mortgage through various lending institutions, including banks, mortgage brokers, and other lending institutions. The rate corresponds to the prime rate, and the amount available to borrow is determined by the home's worth and the amount of equity held.
The interest rate on a variable rate mortgage is calculated using a benchmark such as the prime rate, and the borrower's credit risk is also taken into account. This means that the interest rate can change over time, but it's typically based on the current market conditions.
Variable rate mortgages are often used for larger or longer-term loans, and the borrower's credit score and financial history impact the interest rate. This is why it's essential to have a good credit score and a stable financial situation before applying for a variable rate mortgage.
Here's a list of the types of variable rate mortgages mentioned in the article:
- Home Equity Lines of Credit (HELOCs): secured by the borrower's home equity and have variable interest rates
- Mortgages: referred to as adjustable-rate mortgages (ARMs) with a fixed rate for a predetermined initial term, followed by regular rate adjustments
Advantages and Disadvantages
Variable rate mortgages can be a great option for some people, but it's essential to weigh the advantages and disadvantages before making a decision.
One of the main advantages of variable rate mortgages is the lower initial interest rate, which can lead to lower monthly payments. This is especially beneficial for borrowers who expect their salaries to rise over time or who only need the loan for a short period.
Variable rate mortgages also offer more flexibility than fixed-rate loans, with fewer penalties for early repayment. This can be a huge advantage for people who want to pay off their debt early due to improving financial circumstances or refinancing.
However, one of the significant disadvantages of variable rate mortgages is the risk of rising payments. If interest rates increase, the monthly payments will also rise, which can be a budgeting nightmare.
Here are some key points to consider when deciding between a variable rate mortgage and a fixed-rate loan:
- Lower initial interest rates and lower monthly payments
- More flexibility with fewer penalties for early repayment
- Risk of rising payments if interest rates increase
- Potential for higher total cost of borrowing if interest rates rise
It's also worth noting that variable rate mortgages can be beneficial in a market where interest rates are predicted to fall or remain relatively constant. In this scenario, the lower interest rates can lead to significant savings over the loan period.
Ultimately, whether or not to choose a variable rate mortgage depends on your individual financial situation and goals. If you're willing to take on the risk of rising payments and can capitalize on the lower initial rates, a variable rate mortgage might be a good option for you.
Types of Variable Rate Mortgages
Variable rate mortgages can be a great option for some borrowers. A 5-year ARM loan, for instance, generally provides the lowest interest rates and monthly payments during the initial rate period.
These loans are ideal for borrowers who plan to move or refinance within the five-year period. You'll have predictable monthly payments at a low interest rate for the first five years.
A 5-year ARM loan is a variable-rate loan with an initial fixed-rate feature. After the initial five-year period, the fixed rate converts to a variable rate, adjusting every year in line with an index rate.
7-year ARMs provide seven years of predictable monthly principal and interest payments at a low interest rate before any adjustments are made. If you expect to move or refinance within the seven-year period, this may be a good option.
ARMs have an initial fixed-rate period followed by the remainder of the loan using a variable interest rate. This is why they're often referred to as hybrid loans.
How it Works
A variable rate mortgage works differently than a fixed-rate mortgage, with rates structured as floating and not fixed during some portion of the loan's duration. This means that your interest rate can change over time, and your monthly payment may increase or decrease accordingly.
The initial interest rate is fixed for a set period, but then becomes variable, adjusting periodically for the remaining life of the loan. For example, a 5-year ARM loan has a fixed rate for the first five years and an adjustable rate for the remaining life of the loan.
A variable rate mortgage can be beneficial if you believe rates will fall over time, as you can take advantage of decreasing rates without refinancing. However, if rates rise, your monthly payment could increase substantially.
Here are some common types of variable rate mortgages:
- 5-year ARM: has a fixed rate for the first five years and an adjustable rate for the remaining life of the loan.
- 7/6 ARM: has a fixed rate for the first seven years and an adjustable rate for the remainder of the loan, adjusting every six months.
- Jumbo 10/1 ARM: has a fixed rate for the first 10 years and an adjustable rate for the remaining duration of the loan, adjusting every year.
How it Works
Variable interest rates work by adjusting regularly in response to an external reference rate or benchmark index. This means that the rate on your loan can change over time, affecting your monthly payments. The most common benchmark is the London Interbank Offered Rate (LIBOR), but it's being replaced by the Secured Overnight Financing Rate (SOFR) due to manipulation incidents.

The interest rate on a variable rate loan is calculated by adding the benchmark rate to a spread or margin. The lender determines this margin based on various factors, including the loan period, the type of asset purchased with the loan, and the borrower's creditworthiness.
To understand how variable interest rates work, let's break it down into the key components:
- Benchmark rate: This is the external reference rate or index that the interest rate is based on.
- Spread or margin: This is the amount added to the benchmark rate to determine the interest rate on your loan.
- Loan period: This is the length of time the loan is for, which can affect the interest rate.
- Creditworthiness: This is a measure of the borrower's credit history and score, which can impact the interest rate.
Here are some common benchmarks used for variable interest rates:
- LIBOR (London Interbank Offered Rate)
- SOFR (Secured Overnight Financing Rate)
- Prime rate: This is the interest rate that commercial banks charge their most credit-worthy customers.
Variable interest rates can be structured in different ways, including:
- Fully amortizing loans: These loans charge interest on the entire loan amount throughout the life of the loan.
- Non-amortizing loans: These loans may charge interest on a portion of the loan amount, or may have a different interest rate structure.
It's worth noting that variable interest rates can be influenced by external factors, such as changes in the benchmark rate or economic conditions.
Interest Calculator
Using an interest calculator can help you estimate how much interest you'll owe on a loan or investment.
The interest rate is a critical component of the calculation, as it directly affects the total amount you'll pay back.
For example, if you borrow $1,000 at a 5% interest rate, you'll owe $50 in interest over a year.
You can use an interest calculator to determine how long it'll take to pay off a loan based on your monthly payments.
A loan with a longer repayment period, such as 5 years, will result in a lower monthly payment but more interest paid overall.
The interest calculator will also help you understand how much interest you'll save by making extra payments.
Making an extra payment of $100 per month can save you $1,500 in interest over the life of a 3-year loan.
Pros and Cons
Variable-rate mortgages have their advantages and disadvantages. Lower initial payments can be a significant pro, especially for first-time homebuyers.
One of the biggest benefits of variable-rate mortgages is that payments can be lower if interest rates drop. This can be a huge relief for homeowners who are struggling to make ends meet.
However, there's a catch: mortgage payments can increase if interest rates rise. This could lead to homeowners being trapped in an increasingly unaffordable home as interest rate hikes occur.
Here are some key pros and cons to consider:
- Lower initial payments
- Lower payments if interest rates drop
- Mortgage payments can increase if interest rates rise
Frequently Asked Questions
Can you get a variable interest only mortgage?
Yes, variable interest-only mortgages are available, but be aware that the rate may change after the introductory period ends.
Sources
- https://www.debt.com/variable-rate-loan/
- https://www.navyfederal.org/loans-cards/mortgage/mortgage-rates/adjustable-rate-mortgages.html
- https://www.usbank.com/home-loans/mortgage/adjustable-rate-mortgages.html
- https://www.usbank.com/home-loans/mortgage/adjustable-rate-mortgages/5-1-arm-rates.html
- https://www.investopedia.com/terms/v/variable-rate-mortgage.asp
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