Personal Loan Calculator — Estimate Your Monthly Payment

Personal Loan Amount ($) Enter a valid loan amount.

Annual Interest Rate (%) Enter a valid interest rate.

Loan Term (years) Enter a valid loan term.

Monthly Payment

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Total Interest Paid

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Total Amount Paid

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How to Use This Tool

Enter the total personal loan amount you plan to borrow.
Enter the annual interest rate offered by your lender.
Enter the loan term in years.
Click Calculate Payment to see your monthly payment, total interest, and total amount paid over the life of the loan.

The Loan Payment Formula

Monthly loan payments are calculated using the standard amortization formula:

M = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1]

Where M is the monthly payment, P is the loan principal, r is the monthly interest rate (annual rate ÷ 12), and n is the total number of monthly payments (years × 12).

Why This Formula Works

This formula ensures that each fixed monthly payment covers that month's interest charge plus a portion of the principal, structured so the loan balance reaches exactly zero at the end of the term — a process called amortization. In the early years of a loan, a larger share of each payment goes toward interest; over time, more goes toward principal.

Personal Loan Rates Vary Widely

Unlike mortgages and auto loans, which are secured against an asset, most personal loans are unsecured — meaning your interest rate depends heavily on your credit score, income, and the lender's own criteria. Rates can range from single digits for excellent credit to 30%+ APR for lower credit profiles.

Factors That Affect Your Payment

Interest rate: Even a small rate difference compounds significantly over a long loan term
Loan term: A longer term lowers your monthly payment but increases total interest paid over the life of the loan
Loan amount: Directly proportional to your payment — a larger loan means a larger payment at the same rate and term

Frequently Asked Questions

What is the formula used to calculate my monthly payment?

M = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1], where P is the loan amount, r is the monthly interest rate, and n is the total number of monthly payments.

Does a longer loan term always cost more overall?

Yes — while a longer term reduces your monthly payment, you pay interest for more months, which increases the total interest paid over the life of the loan, even at the same interest rate.

What counts as a good personal loan rate?

This varies by credit profile and market conditions, but borrowers with excellent credit typically qualify for single-digit to low-teens APRs, while those with fair or poor credit may see rates well above 20%.

Are there fees beyond interest on personal loans?

Many personal loans charge an origination fee (often 1-8% of the loan amount), deducted upfront or added to the balance — factor this in when comparing loan offers, since it affects your true cost beyond just the interest rate.

This calculator is provided for general informational and estimation purposes only. Results should not be treated as professional financial, tax, legal, medical, or engineering advice. Always verify critical calculations with a qualified professional or official source before making decisions.