Unsecured Loan Payment Calculator and Comparison

An unsecured loan comparison helps you assess payment estimates, total repayment, and loan terms without putting an asset up as collateral. Use this calculator to estimate a fixed-rate monthly payment and total interest from a loan amount, APR, and term; compare offers by entering each lender’s disclosed figures, not by relying on a provider ranking.

Formula

The calculator uses the standard level-payment formula for a fixed-rate installment loan. Monthly payment is M = P × r / [1 − (1 + r)⁻ⁿ]. Here, P is the amount borrowed in dollars, r is the monthly interest rate as a decimal (APR ÷ 1,200), and n is the number of monthly payments (years × 12). Total interest is calculated as I = M × n − P, using the unrounded payment expression internally and displaying money to two decimal places.

For the comparison to reflect a real offer, use the amount you would actually borrow, the lender’s APR, and the repayment term in its disclosure. An APR may reflect certain borrowing costs in addition to the interest rate, but what it includes can depend on the product and applicable disclosures. Compare the lender’s stated payment and total repayment as well as this estimate.

Worked Example

Using the default inputs—$20,000 borrowed, 8% APR, and five years:

• Monthly rate: 8 ÷ 1,200 = 0.0066667.
• Number of payments: 5 × 12 = 60.
• Monthly payment: 20,000 × 0.0066667 ÷ [1 − (1.0066667)⁻⁶⁰] = approximately $405.53.
• Total interest: the exact payment formula multiplied by 60, minus $20,000, gives approximately $4,331.80.

Displayed results are rounded to cents, so multiplying the displayed monthly payment by 60 may differ by a few cents from a total calculated from the unrounded payment. A lender’s actual schedule may also use its own payment dates and rounding conventions.

Assumptions

• The interest rate is fixed for the full term.
• Payments are equal, made monthly, and begin on schedule.
• Interest is modelled monthly at APR ÷ 12.
• Fees, taxes, insurance, and other charges are not separately included; enter a lender’s applicable APR and verify its full cost disclosure.

What Unsecured Loans Are and How They Work

An unsecured personal loan is generally a loan that does not require a particular asset, such as a vehicle or home, to serve as collateral. A borrower receives a stated amount and repays it under agreed terms. “Unsecured” does not mean that repayment is optional or that missed payments have no consequences; the agreement and applicable rules govern what may happen if payments are late or unpaid.

Providers can include banks, credit unions, and online lenders. They differ in their application process, available terms, eligibility assessments, fees, servicing, and disclosures. Those details can change and depend on the individual offer. This page does not rank providers or state current rates: obtain the figures directly from each provider’s written offer and compare like with like.

How to Compare Providers

Collect offers for the same borrowing amount and, where possible, the same repayment period. A lower monthly payment alone does not establish that an offer costs less: a longer term can reduce each payment while increasing the number of payments and potentially the total interest.

• APR and rate structure: Record the disclosed APR and whether the rate is fixed or can change. This calculator assumes a fixed rate.
• Payment and term: Compare the scheduled monthly payment and the number of payments, not just a headline rate.
• Total repayment: Ask for the total of scheduled payments and identify any charges not represented in the calculator.
• Fees and conditions: Check the offer for origination or other fees, late-payment terms, early-repayment conditions, and when funds are expected. Do not assume a fee is included in the calculator’s output.
• Eligibility and final offer: Treat advertisements and preliminary estimates as non-final. A provider’s actual offer may differ after its assessment; verify the final terms before accepting.
• Servicing and support: Find out how statements, payment changes, complaints, and account questions are handled, and keep a copy of the agreement.

For example, compare two disclosed offers for the same amount: enter each APR and term separately, then note the resulting payment and interest estimate. If one has an upfront fee, add it to your comparison separately unless it is already reflected in the APR or financed amount. Confirm with the provider how it treats that fee to avoid counting it twice.

Costs, Limits, and Common Mistakes

The formula describes a simplified, fully amortizing loan: each regular payment covers interest due and reduces principal. It does not establish what a provider will approve, the amount it will offer, or the exact date funds will arrive. It also does not model variable rates, irregular payments, skipped payments, an initial payment delay, or a changing balance caused by additional borrowing.

Common comparison errors include entering the interest rate as a decimal instead of a percentage, using months in the years field, and comparing different loan amounts or terms as if they were equivalent. Enter 8 for 8% APR, not 0.08. The minimum term accepted is about one month; a term entered in years is converted to months. Rounding also matters: the displayed figures are estimates, while contractual schedules may round each payment and interest charge differently.

Another misconception is that no collateral means no financial risk. Borrowing still creates a repayment obligation, and a payment estimate cannot tell you whether an offer fits your circumstances. Review the agreement and check the consequences of missed payments, fees, and any optional add-ons directly with the provider. Do not provide sensitive information through an unsolicited message or a site you have not independently verified.

Frequently Asked Questions

What is an unsecured loan?
An unsecured loan generally does not require a named asset as collateral. The borrower still agrees to repay the debt under the loan contract.

How do I compare unsecured loan providers?
Compare written offers for the same amount and term. Review APR, payment, total repayment, fees, rate structure, conditions, and servicing rather than choosing from a headline payment alone.

Does a lower monthly payment mean a cheaper loan?
Not necessarily. A longer term can lower the monthly payment but increase total interest. Compare the full scheduled repayment and applicable charges.

Does this calculator include lender fees?
No separate fee input is provided. The result is based on the entered amount, APR, and term. Check the lender’s disclosure to learn which costs its APR includes and what is charged separately.

Why might my lender’s payment differ from this estimate?
Differences can result from fees, payment dates, rate changes, the financed amount, payment rounding, or a repayment schedule that does not match the fixed monthly assumptions.

The result is an estimate, and the lender’s disclosure gives the exact figures.

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in p | Loan amount | $ | 20000 | 1 | 100000000
in apr | Interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 5 | 0.0833 | 50
out pmt | Monthly payment | $ | p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2