Loan Calculator
Calculate your monthly payment, total interest, and full amortization schedule for any loan — personal, car, student, or business. Works in any currency worldwide.
| Term | Monthly Payment | Total Interest | Total Cost | Interest % |
|---|
| # | Payment | Principal | Interest | Balance |
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How to Calculate Monthly Loan Payments — The Formula and What It Actually Costs
The monthly payment formula is the same for every instalment loan — personal loans, auto loans, student loans, and home equity loans all use identical mathematics. What changes is the interest rate and term. Understanding the formula matters because the monthly payment shown by lenders is a compressed summary of a much larger number: the total interest paid over the full loan term.
On a $25,000 personal loan at 14% APR over 60 months, the monthly payment is $581. That sounds manageable. The total cost is $34,880 — meaning $9,880 in interest on a $25,000 loan. The payment is the lender’s preferred way to present the cost. The total interest is the actual cost. Every loan on this calculator shows both.
| Loan Amount | APR | Term | Monthly Payment | Total Interest | Total Cost |
|---|---|---|---|---|---|
| $10,000 | 7% | 36 mo | $309 | $1,119 | $11,119 |
| $20,000 | 11% | 60 mo | $434 | $6,040 | $26,040 |
| $25,000 | 14% | 60 mo | $581 | $9,880 | $34,880 |
| $35,000 | 8.5% | 84 mo | $548 | $10,032 | $45,032 |
| $50,000 | 9% | 120 mo | $633 | $25,960 | $75,960 |
What Affects Your Monthly Loan Payment — The 3 Variables
A $20,000 loan at 9% APR over 48 months: $498/mo, $3,904 total interest.
Same loan over 72 months: $352/mo, $5,344 total interest.
The 72-month loan saves $146/month but costs $1,440 more in total. Every extra month on the term is a tradeoff of cash flow today for total cost over the life of the loan.
A $20,000 loan over 60 months at 9% APR: $415/mo, $4,900 total interest.
Same loan at 11% APR: $434/mo, $6,040 total interest.
A 2% higher rate costs $1,140 more in total interest over 60 months. Pre-approval from your bank or credit union before any dealer or lender negotiation is the single most effective way to reduce this cost.
The national average personal loan APR in 2026 ranges from 8.5% for borrowers with 750+ credit scores to 22%+ for subprime borrowers (scores below 620). The difference between a 9% and 18% APR on a $15,000 loan over 48 months is $3,200 in total additional interest — 21% of the original loan amount. Checking your rate with at least three lenders before accepting any offer is the highest-return financial action available to most borrowers.
How the Loan Calculator Works — Step by Step
- 1Enter the loan amountThe total amount you are borrowing — not the purchase price. If buying something with a down payment, subtract the down payment first. For debt consolidation, enter the total balance being consolidated.
- 2Enter the APR (Annual Percentage Rate)Use the APR, not the interest rate. The APR includes fees and is the true annual cost. Lenders in the US are required to disclose APR under the Truth in Lending Act. If a lender quotes a monthly rate, multiply by 12 to get the APR. Never accept a loan based on the monthly payment alone without knowing the APR.
- 3Set the loan term in monthsCommon terms: 24 months (2 years), 36 months (3 years), 48 months (4 years), 60 months (5 years), 84 months (7 years). Longer terms reduce monthly payment but increase total interest. Use the term your lender has offered — then try adjusting it to see the total cost impact.
- 4Review the amortisation scheduleExpand the year-by-year table to see your remaining balance at the end of each year. In the early months of most loans, the majority of each payment is interest, not principal. On a 60-month loan at 11%, over 70% of your first payment is interest. This is why early payoff saves disproportionately large amounts of interest.
What Is a Good Loan Interest Rate in 2026?
| Credit Score Range | Typical APR Range | Monthly payment on $15K/48mo | Total interest |
|---|---|---|---|
| 750+ (Excellent) | 7–9% | $368–$374 | $1,664–$1,952 |
| 700–749 (Good) | 9–13% | $374–$399 | $1,952–$3,152 |
| 650–699 (Fair) | 13–18% | $399–$440 | $3,152–$6,120 |
| 600–649 (Poor) | 18–28% | $440–$524 | $6,120–$10,152 |
| Below 600 | 28–36% | $524–$569 | $10,152–$12,312 |
The difference between excellent and poor credit on a $15,000 loan over 48 months is over $10,000 in additional interest. Improving a credit score from 630 to 720 before applying for a significant loan is often worth delaying the loan by 6–12 months. Related: use the mortgage calculator to see the same credit-rate relationship applied to a home loan, where the stakes are significantly larger.
Loan Calculator — FAQ
Common questions about loan calculations, interest, and payments.
Monthly payment = P × [r(1+r)^n] ÷ [(1+r)^n − 1]. P = principal, r = monthly rate (APR ÷ 12), n = total months. Example: $20,000 at 11% APR for 60 months. r = 0.11/12 = 0.009167. n = 60. Payment = 20,000 × [0.009167 × (1.009167)^60] ÷ [(1.009167)^60 − 1] = $434/month. Total paid = $26,040. Total interest = $6,040.
The interest rate is the base cost of borrowing expressed as a percentage. The APR (Annual Percentage Rate) includes the interest rate plus all additional fees — origination fees, closing costs, broker fees. For a personal loan with a 10% interest rate and a 2% origination fee, the APR will be approximately 11.5–12%. Always compare loans using APR, not the stated interest rate. US lenders are required to disclose APR under the Truth in Lending Act.
Yes — paying off a loan early saves all remaining interest that would have accrued on the outstanding balance. On a $20,000 loan at 11% APR with 60 months remaining, paying it off at month 24 saves approximately $3,200 in interest. Check your loan agreement for prepayment penalties — some lenders charge a fee (typically 1–2% of remaining balance) for early payoff. Use the early payoff calculator to see the exact savings for any extra payment amount.
Amortisation is the process of paying off a loan through regular scheduled payments. Each payment covers both interest (calculated on the current balance) and principal (reducing the balance). In early payments, most goes to interest. In later payments, most goes to principal. On a 60-month loan at 11%, payment 1 is approximately 73% interest and 27% principal. Payment 60 is approximately 1% interest and 99% principal.
Most US lenders use a debt-to-income (DTI) ratio of 36–43% as the maximum. DTI = all monthly debt payments ÷ gross monthly income. On a $5,000/month gross income, maximum total debt payments are $1,800–$2,150/month. If you already pay $800/month in rent and $300 in existing debt, you have approximately $700–$1,050 remaining for a new loan payment. Use the loan calculator to find the loan amount that produces a payment within that range.
A good personal loan APR in 2026 is below 12% for borrowers with scores above 700. Credit unions typically offer the lowest rates — often 7–9% for members with good credit. Online lenders (SoFi, LightStream, Marcus) often compete at 8–11% for prime borrowers. Bank personal loans range from 10–15%. Anything above 20% is a high-cost loan — at that rate, debt consolidation from a lower-rate source is worth exploring first.
Choose the shortest term where the monthly payment is comfortably affordable — not the longest term your lender approves. Longer terms reduce monthly payments but significantly increase total cost. On a $20,000 loan at 10% APR: 36 months costs $645/mo ($3,232 total interest). 60 months costs $425/mo ($5,496 total interest). 84 months costs $330/mo ($7,720 total interest). The 84-month loan has a $315/mo lower payment but costs $4,488 more in total interest than the 36-month loan.
A debt consolidation loan combines multiple debts into one loan with a single monthly payment. It makes financial sense when the new consolidation loan’s APR is meaningfully lower than the weighted average rate of the debts being consolidated. Example: $8,000 in credit card debt at 21% APR consolidated into a personal loan at 11% APR over 48 months saves approximately $3,400 in total interest. Use the loan calculator to model the consolidation: enter total debt as the loan amount and the consolidation APR to compare total cost against current debt payments.
Real Example: $15,000 Personal Loan — Three Scenarios
Here is a complete worked example showing how loan term and interest rate together determine what a $15,000 personal loan actually costs across three realistic scenarios:
| Scenario | Rate / Term | Monthly Pymt | Total Interest | Total Cost |
|---|---|---|---|---|
| Good credit, short | 7% APR / 36mo | $463 | $667 | $15,667 |
| Good credit, medium | 7% APR / 60mo | $297 | $1,820 | $16,820 |
| Fair credit, medium | 14% APR / 60mo | $349 | $5,940 | $20,940 |
| Poor credit, long | 24% APR / 84mo | $399 | $18,516 | $33,516 |
*All examples based on $15,000 loan. Use the calculator above to see results for your specific amount and rate.
The most important insight from this table: the difference between a 7% loan and a 24% loan on the same $15,000 is $17,849 in additional interest — more than the original loan amount. Your credit score and the lender you choose are far more important financial decisions than the loan amount itself.
Understanding Your Loan Amortization Schedule
A loan amortization schedule is a complete month-by-month table showing how every payment over the life of your loan is split between paying down the principal balance and covering the interest charge for that month. It is arguably the most important output of any loan calculator — and the one most borrowers never look at before signing.
In the early months of any amortizing loan, the vast majority of each payment goes toward interest. This is because interest is calculated on the outstanding balance — and the balance is highest at the beginning. As you pay down the principal month by month, the interest charge shrinks and a progressively larger share of each payment reduces the balance.
Understanding this schedule reveals exactly why:
- Making extra payments in the first half of a loan saves dramatically more interest than the same payments made later
- Refinancing in the early months of a high-rate loan can save thousands — because you are still in the high-interest phase
- Long loan terms feel affordable per month but are expensive in total — the extra years are mostly interest, not principal
| Practical use: Before accepting any loan offer, use the amortization schedule to see the total interest cost over the full term. A $400/month personal loan at 18% APR for 60 months has a friendly-sounding payment but costs $9,000 in interest on a $15,000 loan. |
Types of Loans This Calculator Covers
The loan calculator on this page works for any fixed-rate loan product — personal loans, car loans, student loans, home improvement loans, debt consolidation loans, and most business loans. The same amortization math applies to all of them. Here is a quick reference:
Personal Loans
Personal loans are unsecured loans — no collateral required — typically used for debt consolidation, major purchases, medical expenses, home improvement, or emergency costs. US personal loan amounts range from $1,000 to $100,000 with terms from 12 to 84 months. Current average APRs range from 6.5% to 36% depending on credit score. Enter the loan amount, your quoted APR, and the repayment term in months to see your full payment schedule.
Car Loans (Auto Loans)
Auto loans are secured loans collateralised by the vehicle. Terms typically run 36 to 84 months. The loan calculator handles all car loan scenarios — simply enter the financed amount (purchase price minus down payment and trade-in), the APR, and the term. For a more detailed auto loan analysis including credit score rate comparison, affordability check, and term comparison table, use the dedicated
Student Loans
Federal student loans in the US currently carry fixed rates of 5.5% to 8.05% depending on loan type (undergraduate, graduate, or PLUS). Private student loans range from 3.5% to 17% APR depending on creditworthiness. The standard repayment plan is 120 months (10 years). Enter the total loan balance, the interest rate for your specific loan, and 120 months to see your standard monthly payment.
Home Improvement and Debt Consolidation Loans
Unsecured home improvement loans and debt consolidation loans are personal loans by another name. Typical amounts range from $5,000 to $50,000 with terms of 24 to 84 months. Using this loan calculator before applying lets you evaluate whether the consolidated monthly payment and total interest cost represent genuine savings versus your current obligations.
Loan Calculator for Global Markets
This loan repayment calculator works for loans denominated in any currency. The monthly payment formula is universal — the same amortization math applies whether you are calculating a loan in USD, GBP, AUD, CAD, INR, AED, or ZAR. Simply enter the loan amount in your local currency and your country’s prevailing interest rate.
| Market | Common Term | Avg Rate Range | Local Search Term |
|---|---|---|---|
| United States | Personal Loan | 6.5 – 36% APR | loan payment calculator, personal loan calculator |
| United Kingdom | Personal Loan | 5.0 – 29.9% APR | loan calculator UK, monthly repayment calculator |
| Canada | Personal Loan | 5.9 – 46.96% APR | loan calculator Canada, personal loan calculator CA |
| Australia | Personal Loan | 5.75 – 29.99% APR | loan repayment calculator AU, personal loan calculator |
| India | Personal Loan / EMI | 10.5 – 24% p.a. | loan EMI calculator, personal loan EMI calculator |
| UAE | Personal Loan | 2.63% flat p.a.+ | loan calculator UAE, personal loan calculator Dubai |
| South Africa | Personal Loan | 12.75% – 27.75% | loan repayment calculator SA, bond calculator |
For borrowers in India, the term “EMI” (Equated Monthly Instalment) refers to the same fixed monthly payment that this calculator produces. Enter your loan amount in rupees, the annual rate quoted by your bank or NBFC, and the tenure in months to get your exact EMI. The calculation is identical to the US amortization formula.
For borrowers in the UK and Australia, note that interest rates are often quoted as representative APR — the rate that at least 51% of accepted applicants receive. Your actual rate may differ. Always use your specific quoted rate for an accurate payment estimate.
5 Ways to Reduce Your Loan Payment or Total Interest
1. Improve Your Credit Score Before Applying
A higher credit score unlocks lower APRs. The difference between a 650 and a 720 credit score on a $15,000 personal loan can mean saving $2,000–$4,000 in total interest. Spending 60–90 days paying down credit cards and removing credit report errors before applying is often worth more than any negotiation with a lender.
2. Choose the Shortest Term You Can Afford
Every additional month of repayment costs money. A 36-month loan at 8% APR on $15,000 costs $1,060 in interest. The same loan at 60 months costs $3,240 in interest — three times more for the convenience of a lower monthly payment. Use the loan calculator to find the shortest term whose monthly payment fits your budget.
3. Shop at Least Three Lenders
APR offers can vary by 3–8 percentage points for the same borrower across different lenders. Banks, credit unions, and online lenders all price risk differently. Applying within a 14-day window ensures multiple hard inquiries count as a single credit pull. Credit unions consistently offer below-market rates and are worth checking first.
4. Make Extra Payments Toward Principal
Most personal loans allow extra payments without penalty. Applying even $50–$100 extra per month to the principal — not a future month’s payment — meaningfully cuts interest and shortens the loan term. Confirm with your lender that extra payments are applied to principal immediately rather than held for the next scheduled payment.
5. Consider Refinancing if Rates Drop or Credit Improves
If your credit score has improved by 50+ points since origination, or if market rates have fallen significantly, refinancing to a lower rate can save substantial interest on the remaining balance. Calculate the savings using this calculator by comparing your current remaining balance at the new rate versus your existing rate for the same remaining term.
For auto loan refinancing specifically, use the dedicated auto refinance calculator which shows your monthly savings, total interest saved, and break-even point in months.
Loan Interest vs Investment Returns: The Financial Trade-Off
Every loan payment you make represents money that is not being invested or saved. Understanding this trade-off is essential for smart personal finance decisions. A personal loan at 12% APR costs 12 cents per dollar per year — but paying it down guarantees a risk-free 12% return, since you eliminate that interest charge.
By comparison, a high-yield savings account currently pays approximately 4.0–5.0% APY. This means that for any loan above 5% APR, paying off the loan ahead of schedule typically produces a better financial outcome than depositing the same money into savings.
To model how your money grows through saving and investing instead, use the compound interest calculator. Enter your starting balance, monthly contribution, expected rate, and time period to see your year-by-year investment growth.
Financial Disclaimer
All calculations performed by this loan calculator are estimates for educational and informational purposes only. Results are based on the standard amortization formula and assume a fixed interest rate for the full loan term. Actual loan payments, total interest, and payoff schedules may vary based on your lender’s specific terms, any origination fees or closing costs, applicable taxes, insurance requirements, and your individual loan agreement. Variable-rate loans will produce different results as the rate changes. This calculator does not constitute financial advice. Consult a qualified financial advisor or your lender before making borrowing decisions.