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Calculate monthly loan payments, total interest paid, and full repayment schedule for any loan amount, interest rate, and term. Instant, accurate results.
$512.91
Everything you need to know
A loan is a sum of money borrowed from a lender with the promise to repay it within a specified timeframe, typically with interest. Loans are one of the most common financial tools, used for everything from purchasing vehicles and homes to consolidating debt or funding education.
Understanding how loans work—specifically, how much you'll pay in interest and how your payments are structured—is crucial for making informed financial decisions. A seemingly small difference in interest rate or loan term can result in hundreds or thousands of dollars in additional cost. This loan calculator helps you see exactly what you'll pay and compare different borrowing scenarios.
Our loan calculator makes it simple to analyze any fixed-rate loan:
Enter the Loan Amount
Provide Your Interest Rate
Select Your Loan Term
Review Your Results
The standard formula used to calculate monthly loan payments is:
M = P × [r(1+r)^n] / [(1+r)^n-1]
Where:
Loan: $25,000 at 7% APR for 5 years (60 months)
Monthly Payment = $25,000 × [0.00583(1.00583)^60] / [(1.00583)^60-1] Monthly Payment = $494.15
Total Amount Paid: $494.15 × 60 = $29,649 Total Interest: $29,649 - $25,000 = $4,649
Total Interest = (Monthly Payment × Number of Months) - Principal
This simple formula clearly shows how even small changes in monthly payment add up to significant interest savings.
Scenario: Marcus has $15,000 in credit card debt at various rates. He consolidates into a personal loan at 9% APR for 3 years.
Calculations:
Scenario: Sarah buys a $28,000 car. She has two financing options:
Option A: 4-Year Loan at 5.5% APR
Option B: 6-Year Loan at 5.5% APR
Sarah's choice depends on her monthly cash flow and priorities.
$20,000 loan, 5-year term
| Interest Rate | Monthly Payment | Total Interest |
|---|---|---|
| 4.0% | $368 | $2,081 |
| 5.0% | $377 | $2,603 |
| 6.0% | $387 | $3,146 |
| 7.0% | $396 | $3,701 |
| 8.0% | $406 | $4,268 |
A 4% difference in interest rate results in $2,187 in additional interest—highlighting why shopping for the best rate matters.
$15,000 loan at 6% APR
| Term | Monthly Payment | Total Interest |
|---|---|---|
| 2 Years | $658 | $783 |
| 3 Years | $460 | $1,573 |
| 4 Years | $356 | $2,090 |
| 5 Years | $291 | $2,590 |
| 7 Years | $221 | $3,618 |
Shorter terms cost dramatically less in interest, but require higher monthly payments.
Amortization is the process of paying off a loan over time through regular installments. Each payment includes both principal and interest. Early in the loan, most goes to interest. Over time, more goes to principal. This is why making extra principal payments early saves the most interest.
Amortization Example (First & Last payments of $15,000 loan at 6% APR, 3 years):
In the beginning, interest dominates. By the end, principal dominates.
APR is the yearly cost of borrowing, including interest and certain fees. For loans without additional fees, APR closely matches the interest rate. Always use APR for comparison since it's more comprehensive than the interest rate alone.
The term is the length of time you have to repay the loan. Common loan terms:
Default occurs when you fail to make loan payments as agreed. Consequences:
A 100-point credit score difference can mean 3-5% APR difference.
For secured loans, the lower the LTV, the better your rate:
Lenders charge more for longer-term loans due to greater repayment uncertainty.
Lenders look at your monthly debt payments vs. gross income. Lower debt-to-income ratios mean better rates and approval odds.
Lenders view purpose differently—consolidation shows financial discipline; vacation spending raises risk flags.
Get your free credit report from annualcreditreport.com. Look for errors and dispute any inaccuracies. Even small errors can lower your score and increase your rate.
If your score is below 700:
A 50-point improvement might save you 2-3% APR.
Rates vary dramatically between lenders. Compare:
Hard inquiries from multiple applications within 14 days count as one inquiry.
Get pre-approved before negotiating with lenders.
If your credit is poor, a co-signer with good credit can:
Co-signer is equally responsible if you default.
Some lenders quote payments without showing total interest:
Always calculate total cost before committing.
Most personal loans allow penalty-free prepayment. Some auto and business loans charge penalties if you pay early. Confirm this before signing.
Ensure you understand:
Make minimum required monthly payments. Works for low-interest loans where building other wealth is a priority.
Pay extra principal monthly or whenever possible. Even $50-100/month extra principal dramatically shortens the loan and saves interest.
Instead of monthly payments, pay half every two weeks. This results in one extra payment annually, shortening the loan.
Example: $20,000 loan at 6% APR, 5 years
If you have multiple loans, pay minimums on all while directing extra funds to the highest-interest loan. Saves most interest overall.
Pay minimums on all while directing extra funds to the smallest loan balance. Creates psychological wins as loans disappear, though costs more in interest.
If rates drop or your credit improves, refinance to a lower rate. Calculate breakeven point:
Breakeven = Refinancing Costs ÷ Monthly Savings
Example: $5,000 refinancing cost, $50/month savings = 100 months breakeven. Only refinance if you'll keep the loan longer than breakeven period.
Whether you're consolidating debt, financing a purchase, or covering an unexpected expense, understanding the true cost of borrowing is essential. This loan calculator helps you see exactly what you'll pay under different scenarios. But remember: the best loan is no loan—if you can save for something or reduce spending instead, that's usually the best financial move. When borrowing is necessary, use this calculator to compare options and choose the most favorable terms available to you.
FAQ
What is APR vs interest rate? Interest rate is just the cost of borrowing. APR includes interest plus fees, giving the true annual cost.
How do I lower my loan payment? Extend the term (longer payoff period), make a larger down payment, or improve your credit score to get better rates.
Can I pay off a loan early? Usually yes, but check for prepayment penalties. Paying early saves on interest.
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This calculator is provided for educational and informational purposes only. It is not financial, legal, tax, or investment advice. The results are estimates based on the assumptions and inputs you provide.
Actual results may differ significantly due to:
Please consult with a qualified financial advisor, tax professional, or attorney before making any financial decisions. Past performance does not guarantee future results. Always verify important calculations independently before relying on them.