How to use it
- Enter loan amount, interest rate, and term.
- Click “Calculate”.
- Review monthly payment, total interest, and total of payments.
- Adjust numbers to see how changes affect cost.
What it does – The calculator takes your loan amount, annual interest rate and term to show three key figures: monthly payment, total interest paid over the life of the loan, and the total of all payments. Why it matters – Knowing the monthly payment helps you budget, while total interest reveals the true cost of borrowing. How to read – The monthly payment is what you’ll pay each month. Total interest is the extra amount over the principal. The total of payments is simply principal plus interest. Use these numbers to compare loan offers or to test different rates and terms before you commit.
Pro tips
- Include a small buffer for unexpected expenses.
- Round the loan amount to the nearest thousand for quicker scenario testing.
- Enter the annual rate as a percent, not a decimal.
- Double‑check that the term matches the loan’s actual amortization schedule.
Real-life examples
- First‑time homebuyer comparing mortgage options.
- Refinancing homeowner evaluating new rates.
- Real‑estate investor estimating cash flow for a rental property.
Case study
Sarah entered a $250,000 loan at 4.5% for 30 years, saw a $1,267 monthly payment and $207,000 total cost. By testing a 3.8% rate, she lowered monthly outflow by $120, saving over $40,000 in interest.