When you hear about building good credit, the advice usually centers on paying your bills on time and keeping your credit card balances low. That’s solid advice, but there is another piece of the puzzle that often gets overlooked: your credit mix. Credit mix simply means having different types of credit accounts. The most common types are revolving credit, like credit cards, and installment credit, like car loans, student loans, or mortgages. Credit scoring models like to see that you can handle both. It shows lenders you are comfortable with different kinds of borrowing, not just one type.

For many middle-class consumers, their credit file looks pretty one-sided. They might have two or three credit cards, maybe a department store card, and not much else. If you paid off your car loan years ago and your mortgage is the only installment loan on your record, that’s actually not a diverse mix. In fact, once an installment loan is paid off and closed, it may stay on your report for a while, but its impact fades. Over time, your credit mix can become less diverse without you even realizing it.

Why does credit mix matter? For FICO scores, it counts for about 10 percent of your total score. That’s not a huge slice of the pie, but when you are on the edge between a good and a great interest rate, every point counts. VantageScore also considers credit mix, though the exact weighting varies. The basic idea is that a borrower who has successfully managed a car loan and a credit card is less risky than someone who has only ever used credit cards. The scoring models are not just looking at whether you pay on time; they are looking at how you manage different types of repayment schedules. A credit card requires a minimum payment that can vary, while an installment loan has a fixed monthly amount. Handling both well signals financial maturity.

So if your credit file is heavy on credit cards and light on installment loans, what can you do? One practical step is to take out a small personal loan. Credit unions and online lenders offer personal loans for amounts as low as one or two thousand dollars. You might not actually need the money for anything special. Some people borrow the amount and then put it straight into a savings account. That way, they are paying interest on a loan they don’t really use, which sounds wasteful, but the total cost can be modest if the term is short and the rate is low. For instance, a $2,000 loan at 8 percent interest for 12 months would cost less than $100 in total interest. That could be a reasonable price to boost your credit mix, especially if you are planning to apply for a mortgage in the near future.

Another option is to finance a small appliance or piece of furniture with an installment plan, but those often come with high interest rates if you do not pay them off quickly. A better approach is to talk to your local bank or credit union about a credit builder loan. These are designed specifically for improving your credit. The lender holds the loan amount in a certificate of deposit or savings account while you make payments. Once you finish paying it off, you get the money back. The credit bureaus see a regular installment loan being paid on time, and your credit mix improves.

But before you rush out to get a new loan, keep a few cautions in mind. First, never take on debt just for the sake of your credit score. If you cannot afford the payments or the interest is high, the damage to your budget will outweigh any score benefit. Second, don’t open several new accounts at once. Each new loan triggers a hard inquiry and lowers your average account age, both of which can hurt your score in the short term. You want to add one installment loan, make your payments faithfully for a year, and then reevaluate. Third, remember that credit mix is a minor factor. It is much more important to keep your credit utilization below 30 percent and to pay every bill on time. A perfect credit mix will not save you if you have late payments or maxed-out cards.

Also, your credit mix matters more when your credit history is thin. If you are a middle-aged consumer with a 20-year credit history, adding a small personal loan might move your score by only a few points. But if you have only been using credit for a few years, the effect can be larger. Either way, it is a way to round out your profile and show lenders you are not a one-trick pony.

In the end, a diverse credit mix is like a balanced diet. You don’t need every food group at every meal, but over time, having variety is healthier. Adding a small installment loan to a file full of credit cards can be a smart move, provided you do it strategically and without overextending yourself. Take a close look at your credit report, see what types of accounts you have, and decide whether a new loan makes sense. If it does, shop around for the lowest rate and keep the term short. Your credit score will thank you, and so will the lenders who see you as a more capable and experienced borrower.