Fixed or Variable Rate? How to Choose When Refinancing Student Loans

The type of student loan refinancing you choose has a big impact on how much interest you’ll pay.

Pair of brown men's shoes in front of chalk writing on pavement with arrows pointing in opposite directions that read Safety and Risk.
Pair of brown men's shoes in front of chalk writing on pavement with arrows pointing in opposite directions that read Safety and Risk.

Image source: Getty Images.

Everyone wants to save money on their student loans, and one of the best ways to do that is by refinancing. By shopping around with the best student loan refinance lenders, you can end up with a lower interest rate and cut down considerably on how much you pay.

When you refinance student loans, you’ll have an important decision to make -- should you refinance with a fixed-rate or a variable-rate loan? The type of loan you choose can have long-lasting repercussions, so we’re going to cover how you can decide.

How fixed and variable rates work

Let’s start by covering what fixed-rate and variable-rate student loans are. In both cases, the names give you a good idea of how the interest rates on these loans work.

Fixed-rate student loans -- A fixed-rate student loan always has the same interest rate. If you get a fixed-rate student loan with a 5.5% APR, that’s your rate until you pay off the loan.

The big advantage with this type of student loan is its consistency. You never have to worry about your loan’s interest rate and monthly payment amount increasing at a moment’s notice. This makes it easy to budget and reduces the likelihood that your student loan will ever be too much to afford, assuming that your financial situation stays the same.

Although there aren’t any glaring flaws with fixed-rate student loans, their interest rates do tend to be higher in the beginning than what you’d get with variable-rate student loans.

Variable-rate student loans -- A variable-rate student loan has an interest rate that can fluctuate with the market. For example, your variable-rate student loan could start with a 4.25% APR, and then increase to 6% if the market rate goes up enough.

Private lenders base variable interest rates on an index rate, with one of the most common being the London Interbank Offered Rate (LIBOR). That means if the index rate rises, drops, or holds, your loan’s interest rate will do the same.

Variable-rate student loans can potentially save you the most money, because lenders typically offer lower starting interest rates on this type of loan than on fixed-rate student loans. If the index rate doesn’t rise or if you’re able to pay off your loan in full before it does, then you’ll end up paying less.

The obvious downside with a variable rate is the risk involved. You’ll end up paying more if interest rates rise.

How to choose the right type of loan for refinancing

Choosing between a fixed and variable rate when refinancing your student loans depends on a few factors: