Loan Amortization Schedule Calculator
Principal vs. interest breakdown at any point in a loan.
Enter your values
ⓘ Live results
Results
- Monthly payment
- $2,155.01
- Interest in payment #60
- $1,703.81
- Principal in payment #60
- $451.20
- Balance after payment #60
- $326,680.35
- Total interest over full loan
- $425,803.67
Quick answer
Early payments on an amortizing loan are mostly interest; the principal share grows every month as the balance shrinks.
Interest = balance x monthly rate; Principal = payment - interest
How to use the Loan Amortization Schedule Calculator
- 1Enter the loan amount, rate and term.
- 2Choose the payment number you want to inspect.
- 3See exactly how much of that payment is interest vs. principal.
Worked example
Using the values the calculator loads with:
Inputs
- Loan amount350000 $
- Interest rate6.25 % APR
- Loan term30 years
- Payment number to inspect60
Results
- Monthly payment$2,155.01
- Interest in payment #60$1,703.81
- Principal in payment #60$451.20
- Balance after payment #60$326,680.35
- Total interest over full loan$425,803.67
Frequently asked questions
Why is so little principal paid early on?
Interest is charged on the full remaining balance, which is highest at the start of the loan.
When does principal overtake interest?
Roughly halfway through most 30-year loans at typical rates, though it depends on the rate.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.