Outstanding Loan Balance Calculator
How much of a loan is still owed after a number of instalments, and how much capital has been repaid.
Results
Outstanding balance
134,545.61
Amount
15,454.39
Total interest
24,959.63
Months
300
What this tool does
This is the figure a bank quotes when you ask to repay early or to move the loan elsewhere. It assumes a fixed rate and equal instalments, with no fees, insurance or missed payments.
Formula
B = C(1+i)^k − PMT × ((1+i)^k − 1) ÷ i
Variables
| Symbol | Meaning | Unit |
|---|---|---|
p | Loan amount | — |
r | Annual interest rate | % |
t | Term in years | — |
k | Payments already made | — |
B | Outstanding balance | — |
PAID | Amount | — |
INT | Total interest | — |
LEFT | Months | — |
Worked example
- Loan amount150,000
- Annual interest rate3.5 %
- Term in years30
- Payments already made60
- Outstanding balance134,545.61
- Amount15,454.39
- Total interest24,959.63
- Months300
Limitations
- This is an informational calculator, not personalised financial advice. Rates, fees, taxes and contract conditions vary between institutions and countries.
- The tool works with whatever currency you use for the inputs; it does not convert between currencies.
- The calculation runs at full precision and only the display is rounded. If you copy an intermediate value and retype it, small differences can appear.
Frequently asked questions
Why does the balance fall so slowly at first?
Because each instalment is split between interest and capital, and at the start the balance is at its highest, so interest takes the larger share. On a thirty-year loan at 3.5 %, after five years of payments only about a tenth of the capital is gone. This is also why early overpayments are so effective: every euro goes straight off the capital.