Personal Loan Calculator – Calculate Monthly Payment & Interest

💳 Personal Loan Calculator

Type in the amount you want to borrow and this Personal Loan Calculator tells you what you’ll pay every month. You’ll also see the total interest, the full cost of the loan, and — if you add an optional extra monthly payment — how much faster you could clear it and how much interest you’d save.

The amount you actually borrow, before interest and fees. Any currency works here — just use the same one throughout.

The yearly rate your lender quoted. Personal loan rates vary quite a bit between lenders, terms, and borrowers.

How long you’ll take to pay it back. Terms on personal loans usually run anywhere from one to seven years.

Enter 0 if your lender charges no fee. A percentage is applied to the loan amount; a fixed amount is charged as-is. This calculator assumes the fee is paid separately rather than financed into the loan.

Anything you pay on top of the scheduled monthly amount goes straight to principal. That shortens the loan and cuts the interest. Leave it blank to see the standard repayment.

Monthly Loan Payment
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Total Interest
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Total Principal
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Processing Fee
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Total Repayment (Principal + Interest)
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Total Loan Cost (Incl. Fee)
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Monthly Payment
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Set your inputs to calculate
⚡ Extra Payment Analysis
Total Monthly Payment
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Interest Saved
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Months Saved
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New Payoff Time
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Detail Value

🔥 Popular Calculators

🌍 Type every amount in the same currency. The calculator doesn’t convert between currencies — use USD all the way through, or EUR, or GBP, or whatever you work in.

How to Use This Personal Loan Calculator

Loan Amount. Enter what you actually borrow, before interest and fees. This is what the lender hands over, not what you end up paying back.

Annual Interest Rate. Your yearly rate as a percentage. Rates move around quite a bit between lenders, credit profiles, and terms — use the number you’ve actually been quoted.

Loan Term. Choose months or years. Personal loan terms typically run from one to seven years, depending on the lender and the amount.

Processing Fee. Pick whether your lender quotes it as a percentage or a fixed amount, then type it in. Enter 0 if there’s no fee. The calculator treats this as a separate cost — it’s not added to the loan principal, so interest is charged on the loan amount only.

Extra Monthly Payment (optional). If you plan to pay a bit more each month, put that here. The calculator then shows how much interest you save and how many months earlier you’d be debt-free. Leave it empty to see the standard schedule.

The Formula Behind Every Personal Loan Payment Calculator

This tool uses the standard reducing-balance formula that personal, auto, and most installment loans are built on:

Payment = P × r × (1 + r)n ÷ ((1 + r)n − 1)

P is your loan amount, r is the monthly rate (annual rate ÷ 12 ÷ 100), and n is the total number of monthly payments.

Each payment has two parts: interest on the balance still owed, and repayment of the principal. Early on, the balance is big, so most of the payment goes to interest. As the balance drops, interest shrinks and principal grows. The total payment stays the same — only the split changes.

That’s why dividing the loan by the number of months gives you the wrong answer. It ignores interest completely. The reducing-balance method only charges interest on what’s still owing, which is how a personal loan actually works.

What Each Result Actually Tells You

The Personal Loan Calculator gives you several numbers, and each one answers a different question:

  • Monthly Loan Payment. Your fixed payment every month for the term. This is the number that has to fit your budget.
  • Total Interest. Every interest charge added up across the whole loan. This is the actual cost of borrowing.
  • Total Principal. The loan amount itself — what you borrowed before interest.
  • Processing Fee. The one-time charge from the lender. It sits outside the loan math.
  • Total Repayment. Principal plus interest — what the loan costs before fees.
  • Total Loan Cost. Repayment plus the processing fee. The all-in number for the loan side of the deal.
  • Interest as % of Total Loan Cost. A quick way to see how much of your total outgo is interest rather than principal or fees.
  • Extra Payment Analysis. When you enter an extra payment, you get the total monthly payment, interest saved, months saved, and the new payoff time.

Extra Monthly Payments: The Fastest Way to Cut Interest

Here’s how it works. When you pay extra on a personal loan, that money goes entirely toward principal. Interest for the month is already calculated on the outstanding balance, so nothing gets swallowed by interest charges. A smaller balance means less interest next month, which means more of your regular payment chips away at principal. The loan unwinds faster and the interest bill shrinks month after month.

That compounding effect is why even a small extra payment adds up. On a 10,000 loan at 10% over three years, paying an extra 100 a month can knock several months off the term and save hundreds in interest. Enter an extra amount in the calculator above and the Extra Payment Analysis panel appears with the exact figures.

Two things worth checking before you commit to paying extra:

  • Prepayment penalties. Some lenders charge a fee if you pay off early or make extra payments. If yours does, that fee eats into the interest you save.
  • How extras get applied. Most lenders apply extras to principal, but a few apply them to future instalments instead. The difference is huge — ask your lender before setting a plan.

Worked Examples

Example 1: A Modest Loan Over Two Years

  • Loan amount: 5,000
  • Rate: 12% per year
  • Term: 2 years (24 months)
  • Processing fee: 1%

Monthly payment comes out around 235.37. Total interest is about 648.82. Total repayment is roughly 5,648.82. The processing fee is 50, bringing total loan cost to 5,698.82. Interest works out to roughly 11.4% of the total loan cost — a reasonable ratio for a two-year unsecured loan.

Example 2: A Standard Personal Loan

  • Loan amount: 10,000
  • Rate: 10% per year
  • Term: 3 years (36 months)
  • Processing fee: 1%

Monthly payment is around 322.67. Total interest is roughly 1,616.09. Total repayment comes to about 11,616.09. The processing fee is 100, so total loan cost is 11,716.09. Now add an extra payment of 100 per month: the loan clears in about 27 months instead of 36, saving roughly 430 in interest. The Extra Payment Analysis panel shows these numbers automatically.

Example 3: A Larger Five-Year Loan

  • Loan amount: 30,000
  • Rate: 14% per year
  • Term: 5 years (60 months)
  • Processing fee: 1%

Monthly payment is about 698.17. Total interest is roughly 11,890.20. Total repayment is about 41,890.20. The processing fee adds 300, so the total loan cost lands around 42,190.20. Here’s the thing — interest ends up close to 40% of the original loan amount. Long terms and higher rates push that ratio up fast, which is why comparing total interest across offers matters more than comparing monthly payments alone.

How to Lower Your Personal Loan Cost

If the total interest on your quote looks high, these levers work — roughly in order of impact.

  1. Shop around. Rates vary a lot between banks, credit unions, and online lenders. A two-point difference on a five-year 20,000 loan adds up to thousands in interest.
  2. Work on your credit first. Your credit profile is one of the biggest things a lender looks at. Even a modest score improvement can unlock a better quote.
  3. Go shorter if you can. A shorter term raises the monthly payment but slashes total interest. If the payment fits, the saving is real.
  4. Pay extra when you can. Even small extras compound into big savings over the life of the loan.
  5. Ask about every fee. Origination fees, processing charges, and prepayment penalties all cut into what you save. Compare total loan cost, not just the interest rate.
  6. Skip the add-ons. Payment protection insurance and similar products quietly raise the cost of the loan.
  7. Consider a cosigner. If your credit history is thin, a cosigner with strong credit can sometimes unlock a lower rate — but remember they’re on the hook if you stop paying.

Common Mistakes When Using a Personal Loan Calculator

A few things people get wrong when estimating their own loan costs.

Only looking at the monthly payment. A lower monthly payment over a longer term is usually the more expensive deal. Always compare total loan cost, not just the monthly figure.

Ignoring the processing fee. One to five percent is real money. On a 10,000 loan, a 3% fee is 300 — worth factoring into your comparison.

Assuming every extra payment goes to principal. Some lenders apply extras to future instalments instead. Check before you build a payoff plan around it.

Forgetting about prepayment penalties. If your lender charges one, the interest you save by paying early may be partly or wholly cancelled out. Read the terms before you assume early payoff is free.

Comparing APR across different loan structures. APR is a broader measure than the interest rate because it can include certain fees. Two loans with the same rate can have different APRs if their fees differ.

Borrowing more than you need. Every extra bit you borrow costs more in interest, raises the monthly payment, and increases total repayment. Borrow only what the purpose genuinely requires.

Additional Financial Resources

For a plain-English explanation of how amortization works on installment loans, Investopedia’s amortization page is a solid starting point.

For consumer-protection guidance on personal loans and installment credit — including your rights when borrowing — the US Consumer Financial Protection Bureau’s loan resources are worth reading.

For a clear explanation of how APR differs from a simple interest rate and what lenders must disclose, the CFPB’s explainer on rate vs APR covers it well.

For current consumer credit conditions in the United States, the Federal Reserve’s G.19 Consumer Credit release publishes updated figures every month.

Frequently Asked Questions About Personal Loans

It’s a tool that takes your loan amount, interest rate, term, and any processing fee, and works out the fixed monthly payment plus the total interest, total repayment, and full loan cost. This Personal Loan Calculator also runs an extra payment analysis if you enter one.
Using the reducing-balance formula: Payment = P × r × (1 + r)^n ÷ ((1 + r)^n − 1). P is the loan amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the number of monthly payments. The Personal Loan Payment Calculator runs that formula for you.
Yes — the Personal Loan Cost Calculator shows the fee as a separate line and adds it to the total loan cost. It assumes the fee is paid separately rather than financed into the loan, so interest is calculated on the loan amount only. If your lender rolls the fee into the loan, your actual interest will be slightly higher.
An extra payment goes entirely toward principal, which pulls the balance down faster. A smaller balance means less interest next month, and that compounds over the life of the loan. The Personal Loan Repayment Calculator shows how much interest you save, the total monthly payment with the extra included, and how many months earlier the loan clears. Check your lender’s prepayment policy first — some charge a fee.
Not automatically either way. A shorter term means a higher monthly payment but much less interest. A longer term lowers the monthly figure but raises total interest, often by a big margin. Use the Personal Loan Monthly Payment Calculator to compare total cost across two or three terms before choosing.
Many lenders allow early repayment, but some charge a prepayment penalty or an early payoff fee. Check your loan agreement before assuming it’s free. The interest saving shown by this Personal Loan Calculator assumes extra payments go to principal and no penalty applies.
Rates depend a lot on your market, the lender, the term, and your credit profile. Borrowers with strong credit and steady income usually see the lower end of the range, while first-time borrowers, thin-file applicants, or those taking longer terms pay more. The most useful comparison is always against offers you can actually get.
No. The interest rate is the cost of borrowing the principal. APR is a broader measure that can include certain financing fees on top of the interest rate. Two offers with the same interest rate can have different APRs if their fees differ. The Personal Loan Interest Calculator on this page works from the interest rate you enter; it does not compute APR.
Yes. The Personal Loan Calculator is currency-neutral. Enter everything in the same currency — dollars, euros, pounds, rupees, anything — and the results come back in that currency. It doesn’t convert between currencies.

⚠️ Disclaimer: The results from this Personal Loan Calculator are hypothetical calculations based on the inputs you provide and are for educational and informational purposes only. They should not be treated as financial, lending, or tax advice. The calculator uses your inputs as entered and does not verify them against any lender’s actual offer, fee schedule, or loan agreement. Real personal loan terms vary by lender, region, credit profile, loan amount, and promotional period, and may include charges not captured here — such as origination fees, prepayment penalties, late payment charges, or mandatory add-on products. The extra payment analysis assumes extra amounts are applied to principal and that no prepayment penalty applies; actual results may differ. Total interest and total loan cost assume every payment is made on time for the full term and that the interest rate remains unchanged; variable-rate loans will produce different results. Please consult a qualified financial advisor and read your loan agreement carefully before committing to any borrowing.