How the loan calculator works
A standard loan is amortized: you repay it in equal monthly instalments over a fixed term. Early payments are weighted toward interest; as the balance falls, more of each payment goes to principal until the loan reaches zero.
The formula
- P — loan amount
- r — monthly interest rate (annual rate ÷ 12)
- n — total number of monthly payments (years × 12)
Tips for borrowers
- Compare offers using APR, not just the headline rate.
- Even a small extra payment each month can cut months off the term and save interest.
- Check whether the loan has prepayment penalties before paying it off early.
Frequently asked questions
How is a loan monthly payment calculated?
For a fixed-rate amortizing loan, the payment is derived from the loan amount, the monthly interest rate (annual rate divided by 12), and the number of monthly payments. Each payment covers that month’s interest plus a portion of the principal.
What is the difference between APR and interest rate?
The interest rate is the cost of borrowing the principal. APR (annual percentage rate) can also include certain fees, so it is usually slightly higher and is a better figure for comparing loan offers.
Does a shorter term save money?
Yes. A shorter term means higher monthly payments but significantly less total interest, because you are borrowing the money for less time.
Can I use this for any currency?
Yes — the calculation is the same everywhere. CalcNow picks your currency automatically from your location, and you can change it anytime.
Estimates only, not financial advice. Confirm terms with your lender.