Loan Calculator
Enter the amount, the monthly interest rate and the term to see what you actually pay each month, how much of it is interest, and how the balance falls over time.
Monthly payment
4,718.09
Total interest
69,851.17
Total repayment
169,851.17
Amortisation schedule
| Month | Interest | Principal | Balance |
|---|---|---|---|
| 1 | 3,200.00 | 1,518.09 | 98,481.91 |
| 2 | 3,151.42 | 1,566.67 | 96,915.25 |
| 3 | 3,101.29 | 1,616.80 | 95,298.45 |
| 4 | 3,049.55 | 1,668.54 | 93,629.91 |
| 5 | 2,996.16 | 1,721.93 | 91,907.98 |
| 6 | 2,941.06 | 1,777.03 | 90,130.94 |
| 7 | 2,884.19 | 1,833.90 | 88,297.05 |
| 8 | 2,825.51 | 1,892.58 | 86,404.46 |
| 9 | 2,764.94 | 1,953.15 | 84,451.32 |
| 10 | 2,702.44 | 2,015.65 | 82,435.67 |
| 11 | 2,637.94 | 2,080.15 | 80,355.53 |
| 12 | 2,571.38 | 2,146.71 | 78,208.82 |
| 13 | 2,502.68 | 2,215.41 | 75,993.41 |
| 14 | 2,431.79 | 2,286.30 | 73,707.11 |
| 15 | 2,358.63 | 2,359.46 | 71,347.65 |
| 16 | 2,283.12 | 2,434.96 | 68,912.69 |
| 17 | 2,205.21 | 2,512.88 | 66,399.81 |
| 18 | 2,124.79 | 2,593.29 | 63,806.51 |
| 19 | 2,041.81 | 2,676.28 | 61,130.23 |
| 20 | 1,956.17 | 2,761.92 | 58,368.31 |
| 21 | 1,867.79 | 2,850.30 | 55,518.01 |
| 22 | 1,776.58 | 2,941.51 | 52,576.50 |
| 23 | 1,682.45 | 3,035.64 | 49,540.86 |
| 24 | 1,585.31 | 3,132.78 | 46,408.08 |
| 25 | 1,485.06 | 3,233.03 | 43,175.05 |
| 26 | 1,381.60 | 3,336.49 | 39,838.56 |
| 27 | 1,274.83 | 3,443.25 | 36,395.31 |
| 28 | 1,164.65 | 3,553.44 | 32,841.87 |
| 29 | 1,050.94 | 3,667.15 | 29,174.72 |
| 30 | 933.59 | 3,784.50 | 25,390.22 |
| 31 | 812.49 | 3,905.60 | 21,484.62 |
| 32 | 687.51 | 4,030.58 | 17,454.04 |
| 33 | 558.53 | 4,159.56 | 13,294.48 |
| 34 | 425.42 | 4,292.66 | 9,001.82 |
| 35 | 288.06 | 4,430.03 | 4,571.79 |
| 36 | 146.30 | 4,571.79 | 0.00 |
About this tool
The calculator uses the annuity formula, the same one banks use for fixed-instalment loans: the payment stays constant while the split between interest and principal shifts. Early instalments are mostly interest; later ones mostly repay the balance.
Two figures decide the cost of a loan: the rate and the term. Stretching a loan lowers the monthly payment but raises total interest sharply, which is why the schedule below shows the whole picture rather than just the instalment.
Frequently asked questions
- How is the monthly payment calculated?
- With the annuity formula: payment = P × i / (1 − (1 + i)^−n), where P is the principal, i the monthly rate as a decimal and n the number of months.
- Is the rate annual or monthly?
- Monthly. If you only know the annual rate, divide it by 12 for an approximation, or use the bank's stated monthly rate for an exact match.
- Why is the early interest so high?
- Interest is charged on the outstanding balance, which is largest at the start. As the balance falls, the interest share of each instalment falls with it.
- Does this include fees and insurance?
- No. It calculates pure principal and interest. Arrangement fees, taxes and insurance are added by the lender on top and vary by country and product.