Loan Calculator
Calculate monthly payments and total interest for any type of loan
How to Use This Loan Calculator
- Enter the loan amount (principal) you need to borrow
- Input the annual interest rate as a percentage
- Specify the loan term in years or months
- Click 'Calculate Loan' to see your monthly payment, total interest, and amortization schedule
- Review the payment breakdown chart and schedule to understand how interest and principal change over time
Example: A $25,000 personal loan at 8% APR for 5 years: Monthly payment of $507. Total interest paid: $5,420. Total repaid: $30,420. In the first year, about 60% of payments go to interest.
Tip: Even small rate differences matter significantly. A 7% vs 9% rate on $25,000 for 5 years saves over $1,300 in interest.
Why Use a Loan Calculator?
Before borrowing, understand exactly what a loan will cost in monthly payments and total interest over its lifetime.
- Determine affordability by seeing exact monthly payments before applying for a loan
- Compare loan offers with different rates and terms to find the best deal
- Understand how much of each payment goes to interest vs. principal reduction
- Calculate the cost of extending a loan term (lower payments but more interest)
- Plan for early payoff by understanding remaining balance at any point
- Budget accurately for personal loans, auto loans, or other fixed-rate borrowing
Understanding Your Results
The amortization schedule reveals how loans are front-loaded with interest. Early payments mostly cover interest; later payments attack principal.
| Result | Meaning | Action |
|---|---|---|
| Total interest < 25% of principal | Low total interest cost | Good loan terms. Short duration or low rate keeping costs reasonable. |
| Total interest 25-50% of principal | Moderate interest cost | Typical for 5-7 year terms. Consider shorter term if affordable. |
| Total interest 50-100% of principal | High interest cost | Long term or high rate. Significant room to save by paying faster. |
| Total interest > 100% of principal | Very high interest cost | You're paying more in interest than you borrowed. Prioritize payoff. |
Meaning: Low total interest cost
Action: Good loan terms. Short duration or low rate keeping costs reasonable.
Meaning: Moderate interest cost
Action: Typical for 5-7 year terms. Consider shorter term if affordable.
Meaning: High interest cost
Action: Long term or high rate. Significant room to save by paying faster.
Meaning: Very high interest cost
Action: You're paying more in interest than you borrowed. Prioritize payoff.
Note: The longer the term, the lower the payment but the higher the total cost. Find the shortest term you can comfortably afford.
About Loan Calculator
Formula
M = P × [r(1+r)^n] / [(1+r)^n - 1] M = monthly payment, P = principal (loan amount), r = monthly interest rate (annual rate / 12), n = total number of payments. This formula ensures the loan is fully paid off by the last payment.
Current Standards: Personal loan rates in 2026 range from 6-36% depending on credit. Auto loans: 5-12%. Home equity: 7-9%. Credit scores of 720+ typically qualify for the best rates.
Frequently Asked Questions
Does a longer loan term save money?
No. A longer term means lower monthly payments but significantly more total interest. A $20,000 loan at 7%: 3-year term costs $2,204 in interest; 5-year term costs $3,761 interest; 7-year term costs $5,370 interest. Choose the shortest term you can afford.
How do extra payments help?
Extra payments go directly to principal, reducing the balance that accrues interest. On a $20,000 loan at 7% for 5 years, adding $50/month saves $600 in interest and pays off the loan 8 months early. Early extra payments save more than later ones due to amortization.
Should I pay off a low-interest loan early?
It depends. If the loan rate is below what you could earn investing (e.g., 4% loan vs 7% expected returns), mathematically you're better off investing. However, being debt-free has psychological value. Pay off high-interest debt first (credit cards), then decide based on your risk tolerance.
What credit score do I need for the best rates?
Generally, 720+ gets you the best personal loan rates. 680-719 is good but may add 1-3% to rates. Below 680, rates increase significantly. Before applying for large loans, spend 6-12 months improving credit by paying down balances and ensuring on-time payments.
What's the difference between fixed and variable rate loans?
Fixed rates stay the same for the entire term, providing predictable payments. Variable rates adjust with market rates, meaning payments can increase. Fixed rates are typically slightly higher but protect against rate increases. For longer terms (5+ years), fixed rates provide valuable certainty.