How personal loan repayments work

Resources · Cards, loans and credit · 5 min read Building

Key points

• Most personal loans have a fixed payment that clears the loan over a set term.
• Early personal loan repayments are mostly interest. Later ones are mostly balance.
• A longer term lowers the monthly payment but raises the total interest.
• Fees and early repayment rules can change the real cost.

The basic shape of a personal loan

A personal loan hands you a lump sum up front. Then you pay it back in regular instalments, usually monthly, over a set period called the term. Terms of a few years are common. Your personal loan repayments are built around that term.

Plenty of personal loans have a fixed interest rate, so the payment stays put for the whole term. Others are variable. The rate can move up or down, and when it does, either the payment or the term changes with it.

A loan can be unsecured, with nothing tied to it, or secured against something you own, like a car. (Secured and unsecured debt explains the difference.) Secured loans may come with lower rates. The catch? The lender can take the asset if the repayments stop.

How personal loan repayments are split

Every payment does two jobs. First it covers that month’s interest. Whatever’s left chips away at the balance.

Interest is worked out on what you still owe. At the start the balance is high, so interest grabs a big slice of each payment. As the balance falls, that slice shrinks and more of your money goes to the debt itself. This pattern has a name: amortisation.

A worked example

Assumptions:

• Loan: $10,000
• Interest rate: 12% a year, fixed (monthly rate = 12% ÷ 12 = 1%)
• Term: 3 years (36 monthly payments)
• Interest charged on the balance each month before the payment
• The last payment is whatever clears the balance

The monthly payment comes to $332.14.

Month 1. Interest is $10,000 × 1% = $100.00. So of the $332.14 payment, $100.00 is interest and $232.14 reduces the balance, leaving $9,767.86.

Month 36. Interest is just $3.29. The final payment of $332.28 clears the loan.

Here’s how the split shifts year by year:

Total interest over three years: $1,957.18. Total repaid: $11,957.18.

Notice that more than half of all the interest lands in the first year. (The same maths works in any currency.)

Shorter term or longer term?

Same $10,000, same 12%, two different terms:

The five-year loan is about $110 a month easier on the budget. It also costs $1,389.59 more in interest.

Neither one wins automatically. A lower payment can leave breathing room for essentials and savings. A shorter term costs less overall but asks more of you every month. The real question is what your budget can carry reliably, including in a bad month.

Other things that affect the cost

The rate isn’t the whole story. Some loans charge an establishment or set-up fee at the start. If that fee gets added to the balance instead of paid up front, you pay interest on it too. A small monthly account fee looks harmless, but it adds up over a whole term.

Then there’s paying early. Some loans charge a fee if you pay off early or make extra payments, while others let you do it freely. The terms will tell you which. On a variable rate, a rise means either a bigger payment or a longer term. And missing a payment usually costs a fee and can show up on your credit report.

Because of all this, two loans with the same interest rate can cost quite different amounts (see comparing the total cost of credit). Many lenders show an annual percentage rate (APR), or a similar figure under another name, which tries to fold some fees into one number so loans are easier to compare.

Paying extra

If your loan allows extra payments without a fee, every extra dollar goes straight to the balance. That cuts the interest charged in every month that follows, and it can shorten the term.

Some people like to throw spare money at a loan. Others would rather build savings first, so a surprise bill doesn’t send them back to borrowing. It depends on the loan’s rate, its rules and how solid your safety net is.

If your repayments have become hard to meet, free debt help is confidential and doesn’t cost a thing.

Common questions

How are personal loan repayments calculated?

The payment is set so that equal instalments clear both the balance and the interest over the term. Each month, interest is charged on what’s owing, and the rest of the payment brings the balance down.

Is a longer personal loan term cheaper?

Cheaper each month, yes. Usually dearer in total. In the example above, five years instead of three dropped the payment by about $110 but added $1,389.59 in interest.

Can you pay off a personal loan early?

Some loans let you make extra payments freely. Others charge an early repayment fee. Your loan terms will say which applies.

Try it

Play with different amounts, rates and terms in the loan repayment calculator to see your payment and total interest. Want your loans and cards in one view? Find your Freedom Date.

General information only, not financial advice. Your situation is your own.