Loan Amortization Calculator
Get a complete breakdown of your loan payments month by month or year by year. See exactly how extra payments impact your payoff date and how much interest you can save over the life of your loan.
| Monthly Payment | $599.55 |
| Total of 360 Payments | $215,838.19 |
| Total Interest | $115,838.19 |
| Payoff Date | Jun 2056 |
Amortization Schedule ▲
| # | Date | Payment | Principal | Interest | Total Interest | Balance |
|---|
Nuria Pelegrin help users understand payment breakdowns, interest costs, payoff timelines, and repayment strategies, making it easier to manage loans and achieve financial goals.
What Is a Loan Amortization Calculator?
A loan amortization calculator is a free tool that shows you exactly how much of each payment goes to interest and how much goes to your loan balance. It turns a confusing loan into a simple, clear plan. Instead of just knowing your monthly payment, you can see the full picture every single month, from Day 1 to your very last payment.
Here is a fact that surprises most people: on a $400,000 home loan at 6%, you will pay more than $463,000 in interest alone over 30 years. That’s more than the house itself. An amortized loan calculator shows you this total cost upfront before you sign anything.
This tool works as a complete loan amortization schedule calculator. It will offer you a full month by month payment chart. You can use it for a Home loan, car loan, personal loan, or student loan. Just enter a few numbers, and it does all the math for you in seconds.
How to Use This Loan Amortization Calculator
Follow these 6 simple actions to acquire your entire payment breakdown:
Step 1 – Input your loan amount
Type in the principal, which is the entire amount of money you’re borrowing. Like 300k for a house or 25k for a car…. Do not include your deposit here. Simply enter the amount you’ll get from the lender.
Step 2 — Select Your Loan Term
Choose the amount of years or months you have to pay back the loan. Common choices are 30 years or 15 years for a home loan, and 24 to 72 months for a car loan. A shorter term means higher monthly payments but much less interest paid in total.
Step 3 — Enter Your Interest Rate
Enter your annual interest rate. typical mortgage rates are ~6%–7% and typical car loan rates are ~6%–8% for 2024–2025. Even a 0.5% difference in rate can save you thousands of dollars the calculator will show you this clearly.
Step 4 — Choose Your Start Date
Pick the date your first payment is due. This allows the tool to produce an accurate schedule of payments with genuine calendar dates for each payment.
Step 5 – Make Additional Payments (optional)
Here the amortised estimator becomes very powerful. You can add extra monthly, annual, or one-time payments. The calculator will show you how many months you can cut from your loan and how many thousands of dollars you may save in interest.
Step 6 — View Your Results
Click Calculate. You will instantly see your monthly payment, total interest, total amount paid, and a full loan amortization schedule one row for every single payment.
Loan Amortization Formula Explained
Banks and lenders around the world use one standard formula to calculate your monthly loan payment:
M = P × [r(1+r)^n] / [(1+r)^n – 1]
Here is what each letter means:
- M = Your monthly payment (what you pay each month)
- P = Principal (the loan amount you borrowed)
- r = Monthly interest rate (annual interest / 12)
- n = Number of payments (years * 12)
Sample Formula 1 — Home Loan
Detail | Value |
|---|---|
Loan Amount (P) | $300,000 |
Interest Rate | 7% per year (0.583% per month) |
Loan Term (n) | 30 years (360 payments) |
Monthly Payment (M) | $1,996 |
Total Interest Paid | $418,527 |
Total Amount Repaid | $718,527 |
Formula 2 Sample – Car Loan Amortisation Calculator
Detail | Value |
|---|---|
Loan Amount (P) | $25,000 |
Interest Rate | 6.5% per year (0.542% per month) |
Loan Term (n) | 5 years (60 payments) |
Monthly Payment (M) | $489 |
Total Interest Paid | $4,351 |
Total Amount Repaid | $29,351 |
Sample Formula 3 — Personal Loan
Detail | Value |
|---|---|
Loan Amount (P) | $10,000 |
Interest Rate | 9% per year (0.75% per month) |
Loan Term (n) | 3 years (36 payments) |
Monthly Payment (M) | $318 |
Total Interest Paid | $1,435 |
Total Amount Repaid | $11,435 |
What Is a Loan Amortization Schedule Calculator?
A loan amortization schedule calculator gives you a full table showing every payment over the life of your loan. Each row shows exactly where your money goes. Here are the seven columns you’ll see:
- Payment Number What number payment it is ( 1, 2, 3… to the last one)
- Payment Date: The actual calendar date the payment is due
- Starting Balance: What you still owe at the beginning of the month
- Scheduled Payment: The set amount you pay each month
- Interest Payment: The amount of interest paid to the lender as part of your payment
- Principal Payment The part that really reduces your loan balance
- Closing Balance: How much you owe after this payment
Sample Schedule: $100,000 loan | 7% interest | 5 year term | ~ $1,980 per month
# | Date | Beg. Balance | Payment | Interest | Principal | End Balance |
|---|---|---|---|---|---|---|
1 | Aug 2025 | $100,000 | $1,980 | $583 | $1,397 | $98,603 |
2 | Sep 2025 | $98,603 | $1,980 | $575 | $1,405 | $97,198 |
3 | Oct 2025 | $97,198 | $1,980 | $567 | $1,413 | $95,785 |
4 | Nov 2025 | $95,785 | $1,980 | $559 | $1,421 | $94,364 |
5 | Dec 2025 | $94,364 | $1,980 | $550 | $1,430 | $92,934 |
6 | Jan 2026 | $92,934 | $1,980 | $542 | $1,438 | $91,496 |
… | … | … | … | … | … | … |
60 | Jul 2030 | $1,968 | $1,980 | $11 | $1,969 | $0 |
Notice how in the first few months, most of your payment goes to interest. Over time, more and more goes to paying off the actual loan. This shift is the key concept behind amortization.
Mortgage Amortization Schedule — 30-Year Loan Breakdown
A mortgage amortization schedule for a $400,000 loan at 6.10% over 30 years looks very different from a short-term car loan. And this is what your principal and interest payments look like, year by year:
Year | Monthly Interest | Monthly Principal | Remaining Balance |
|---|---|---|---|
1 | $2,033 | $393 | $395,283 |
5 | $1,955 | $471 | $379,421 |
10 | $1,833 | $593 | $358,027 |
15 | $1,665 | $761 | $329,744 |
18 (Tipping Point) | $1,558 | $868 | $310,142 |
20 | $1,479 | $947 | $294,385 |
25 | $1,188 | $1,238 | $245,810 |
30 | $13 | $2,413 | $0 |
Understanding the Tipping Point
The tipping point is the moment when your principal payment finally becomes larger than your interest payment. On a 30-year mortgage, this usually happens around Year 18 or 19. On a 15-year mortgage, it happens much sooner around Year 3 or 4.
Key Stat: On a $400,000 loan at 6%, you may pay more than $463,000 in total interest over 30 years. That is more than the original loan amount.
Car Loan Amortization Calculator vs. Home Loan Amortization Calculator
Both car loans and home loans use the same amortization formula. But there are important differences that affect how much you pay in total:
Feature | Car Loan | Home Loan |
|---|---|---|
Typical Term | 24 – 72 months | 15 – 30 years |
Loan Amount | $10,000 – $60,000 | $100,000 – $1M+ |
Interest Rate | 4% – 15% | 5% – 9% |
Total Interest Impact | Moderate | Very High |
Extra Payment Impact | Reduces term by months | Reduces term by years |
Tipping Point | Early in term | Year 18–19 (30-yr loan) |
Use our car loan amortization calculator to see how quickly you can pay off your vehicle. Use the home loan amortization calculator to find the real 30-year cost of your mortgage. Both tools use the same reliable formula but the numbers look very different.
How Extra Payments Change Your Amortization Schedule
Small extra payments can make a huge difference over time. Here is what happens when you pay a little extra each month on a $300,000 loan at 6.5% over 30 years:
Strategy | Monthly Payment | Payoff Date | Interest Saved |
|---|---|---|---|
No extra payments | $1,896 | 30 years exactly | — |
+$100/month extra | $1,996 | ~26 years 4 months | ~$39,000 |
+$200/month extra | $2,096 | ~23 years 5 months | ~$66,000 |
+$500/month extra | $2,396 | ~18 years 9 months | ~$108,000 |
Three Ways to Make Extra Payments
- Monthly Extra: Add a fixed amount to every payment (most common)
- Annual Extra: Make one big lump-sum payment once a year
- One-Time Extra: Apply a bonus, tax refund, or windfall directly to the loan
Warning: Some lenders charge a prepayment penalty if you pay off your loan too early. Always check your loan agreement before making extra payments. A bank rate amortized loan calculator can help you model different scenarios before you decide.
3 Factors That Affect Your Loan Amortization Calculator Results
Factor 1 — Loan Term
A shorter loan term means higher monthly payments, but you pay far less interest overall. While a 15-year mortgage typically has a higher payment than a 30-year mortgage, it can save you hundreds of thousands of dollars in interest. Use the calculator to compare both options side by side.
Factor 2 — Interest Rate
A 0.5% difference in interest rate can save you thousands of dollars! For a $300,000 loan, the difference between 6% and 6.5% may be almost $30,000 over 30 years. Always shop for the best rate before you commit.
Factor 3 — Extra Payments
As shown in the table above, even $100 extra per month can cut years off your loan and save you tens of thousands in interest. The compounding savings effect of extra payments is one of the most powerful tools in personal finance.
When to Refinance — What Your Amortization Schedule Tells You
Your loan amortization schedule calculator can tell you the perfect time to refinance. Here is the simple rule:
Refinance Early (Before Year 10 on a 30-year loan)
In the early years, most of your payment is interest. Refinancing to a lower rate at this stage can save you a large amount of money because you still have a high balance and many years left.
Be Careful Refinancing Late (After Year 15–18)
Later in the loan, most of your payment is already going to principal. Refinancing at this stage may extend your term and cost you more in the long run even at a lower rate.
The 1% Rule: Refinancing is usually worth it if your new rate is at least 1% lower than your current rate. Always check the break-even point how many months it takes for your savings to cover the refinancing costs.
Amortisation vs. Amortization — Is There a Difference?
The short answer is no there is no difference in meaning. “Amortisation” is the British English spelling, used in the UK, Australia and other Commonwealth countries. “Amortization” is the American English spelling used in the United States and Canada.
The concept, the formula, and the math are exactly the same in both cases. Whether you search for an amortisation calculator or an amortization calculator, you are looking for the same tool. Our calculator works for loans anywhere in the world.
Loan Types This Amortization Calculator Supports
This tool works for any fixed-rate loan. You can figure out the following types of loans:
- Mortgages and home loans with set rates for 15, 20 and 30 years
- Car Loan: Loans for new and used cars (24 to 72 months).
- Personal loans are short term loans that can be used for any reason.
- Student loans are a way to pay for school with set rules for paying them back.
- Business Loan: Commercial loans with fixed rates
Note: This calculator only works for loans with set rates. It doesn’t back mortgages with interest rates that can change over time also known as adjustable rate mortgages (ARMs).
Benefits of Using a Loan Amortization Calculator
Benefit | How It Helps You |
|---|---|
Full cost transparency | See total interest paid not just the monthly payment |
Better loan comparison | Compare 15-year vs 30-year, or 6% vs 7% instantly |
Extra payment modeling | See how additional payments can cut time and reduce costs |
Refinancing decisions | Know exactly when refinancing may benefit you |
Budget planning | Plan future cash flow with exact payment dates |
Equity tracking | Know your home equity at any point in time |
FAQs
What is the difference between a loan amortization calculator and a simple loan calculator?
Simple loan calculators only show you how much you’ll have to pay each month. That helps, but it doesn’t give you the whole story. It’s much more useful to use a loan amortisation tool. It gives you a complete loan amortisation schedule, a detailed table showing every single payment from the first month to the last. For each payment, you can see how much goes to interest and how much goes to reducing your principal. This interest breakdown is critical for understanding the true cost of your loan. It also shows the total cost including all the interest you will pay over the life of the loan. This total cost visibility is what helps smart borrowers make better decisions. For example, on a $300,000 loan at 7% over 30 years, a simple calculator tells you that your payment is $1,996/month. But the amortization calculator also tells you that you will pay over $418,000 in total interest. That number can change how you think about your loan
How does a car loan amortization calculator differ from a home loan amortization calculator?
Both a car loan amortization calculator and a home loan amortization calculator use the exact same formula. The core math is identical. However, the results look very different because of the different loan terms and loan amounts involved. A car loan is usually short 24 to 72 months with amounts between $10,000 and $60,000. This means the total interest difference is moderate. A home loan, on the other hand, can run for 30 years with amounts of $200,000 or more. Over that longer time, the total interest paid can easily exceed the original loan amount. The amortization calculator lets you see this clearly for each loan type. For a car loan, an extra $50/month may pay it off 6 months early. For a home loan, that same $50 extra could save you $20,000 or more. The same formula applies but the impact of your decisions is very different depending on which loan type you are dealing with.
Can extra payments really make a big difference on my amortization schedule?
Yes extra payments can make a massive difference, and the numbers prove it. Look at a $300,000 loan at 6.5% over 30 years. Without any extra payments, you pay the loan off in exactly 30 years and pay a large amount in interest. But if you add just $100 extra each month, you may pay off the loan about 3 years and 8 months early and may save around $39,000 in interest. Add $500 extra per month, and you may save more than $108,000 and pay off the loan in under 19 years. These are real dollar savings that come from a small change in behavior. Some borrowers check a bank rate amortized loan calculator to compare scenarios before choosing how much extra to pay. The key insight is this: early in your loan, every extra dollar goes directly to cutting future interest charges. The earlier you pay extra, the more powerful the impact. Even a one-time extra payment of $1,000 in Year 1 can save you $3,000 to $4,000 in future interest on a typical mortgage.
Is the interest rate in an amortized loan calculator the same as the APR?
No the interest rate and the APR (Annual Percentage Rate) are not the same thing. The interest rate is simply the cost of borrowing the money. The APR includes fees as well things like origination fees, closing costs, and mortgage points. This means the APR is always equal to or higher than the interest rate. When you use an amortized loan calculator, it is important to know which number you are entering. If you enter the basic interest rate, your monthly payment calculation will be accurate. But to understand the true total cost of your loan including all fees included in APR you should use the APR in your comparisons. For example, a loan with a 6.5% interest rate might have a 6.8% APR after fees. When comparing two different loan offers, always compare APR to APR, not just the interest rates. Using APR in your calculation gives you a more accurate picture of the real cost. So when in doubt, use APR for accuracy when comparing loans from different lenders.
When is the best time to refinance based on my mortgage amortization schedule?
The best time to refinance is in the early years of your loan generally before Year 10 on a 30-year mortgage. Here is why: in the early years, most of your payment goes to interest. So if you refinance to a lower rate, you are reducing the interest on a large remaining balance, which can save you a significant amount. A loan amortization schedule calculator makes this very easy to see. You can compare your current schedule with a new schedule at the lower rate. After the tipping point around Year 18 to 19 on a 30-year mortgage most of your payment already goes to principal. Refinancing at this stage could actually cost you more, because extending the loan term means you start paying more interest again from a new starting point. The general rule of thumb is refinancing may be worth it if you can get a rate that is at least 1% lower than your current rate and if you plan to stay in the home long enough to break even on the closing costs. Use a loan amortization schedule calculator to find your personal break-even point before making any decision.