Using idealized assumptions
Small changes in rate or term can change results significantly, so use realistic lender quotes for decision-making.
Amortization Schedule Calculator
View complete payment breakdown showing principal and interest over the life of your loan.
Popular Amortization Scenarios
$100,000.00
4% · 15 years
$100,000.00
4% · 30 years
$100,000.00
5% · 15 years
$100,000.00
5% · 30 years
$100,000.00
6% · 15 years
$100,000.00
6% · 30 years
$100,000.00
7% · 15 years
$100,000.00
7% · 30 years
$100,000.00
8% · 15 years
$100,000.00
8% · 30 years
$150,000.00
4% · 15 years
$150,000.00
4% · 30 years
$150,000.00
5% · 15 years
$150,000.00
5% · 30 years
$150,000.00
6% · 15 years
$150,000.00
6% · 30 years
$150,000.00
7% · 15 years
$150,000.00
7% · 30 years
About Amortization Schedules
An amortization schedule is a detailed table showing every payment over the life of a loan. Each row breaks down how much of that month's payment goes toward principal (reducing your balance) and how much goes toward interest (the cost of borrowing). This transparency helps borrowers understand exactly where their money goes.
The most notable pattern in an amortization schedule is how the split between principal and interest shifts over time. In the early years, the majority of each payment covers interest. As the balance decreases, more of each payment goes toward principal. This is why the loan balance decreases slowly at first and then accelerates toward the end of the term.
Understanding your amortization schedule empowers better financial decisions. You can identify when you cross the "halfway point" in equity, see how extra payments would reduce your balance faster, and compare different loan scenarios side by side. Many borrowers use amortization schedules to plan refinancing strategies or determine the optimal time to make extra payments.
Understanding Your Amortization Schedule
Payment Number
Each row represents one monthly payment. A 30-year loan has 360 payments, a 15-year loan has 180, and so on.
Principal Portion
The amount of each payment that reduces your loan balance. This portion grows over time as the interest portion decreases.
Interest Portion
The cost of borrowing for that month, calculated as your remaining balance multiplied by the monthly interest rate. This decreases over time.
Remaining Balance
Your outstanding loan balance after each payment. Tracking this shows your equity growth and helps plan for refinancing or payoff strategies.
Frequently Asked Questions
An amortization schedule provides a month-by-month breakdown of every loan payment over the full term. Each row shows the payment number, date, total payment amount, how much goes to principal, how much goes to interest, and the remaining loan balance. It reveals the gradual shift from interest-heavy to principal-heavy payments.
How To Read and Use This Schedule
- Use realistic loan amount, rate, and term assumptions from lender quotes.
- Compare alternatives side by side before making a borrowing decision.
- Review what costs are not included in the base payment estimate.
- Use the amortization schedule to understand timing and total borrowing cost.
Common Mistakes To Avoid
Not reviewing the full schedule
The amortization schedule explains when principal builds and where interest costs are concentrated.
Questions To Ask Before You Borrow
- What fees are included in APR versus charged separately?
- Is there any prepayment penalty or restriction on extra principal payments?
- What assumptions could change the final payment before closing/funding?
Sources & Consumer Resources
LLM JSON API feed documentation
Machine-readable scenario feed and contract documentation.
CFPB: Consumer finance guidance
General borrower education and consumer protections.
Our methodology and editorial standards
Explains assumptions, scope, and review process for these calculators.
Editorial Review
Reviewed by: PayCalc Editorial Team
Last reviewed: 2026-02-20
Review cadence: Quarterly review or when assumptions change
About This Calculator
Our amortization schedule calculator generates a complete month-by-month breakdown of any loan. Enter your loan amount, interest rate, and term to see exactly how each payment is split between principal and interest, and how your balance decreases over time.
Schedules can be downloaded as CSV files for use in spreadsheets. Results are for informational purposes only — consult your lender for exact payment details.