Personal Loan Calculator

What this calculator does

This tool models a hypothetical fixed-rate personal loan with equal monthly payments. You enter the loan amount, an annual rate, a term in months, and an optional origination fee. The calculator returns an estimated monthly payment, estimated total interest, and estimated total repayment.

Every number this calculator produces is an educational estimate based entirely on inputs you choose. It does not connect to any lender, does not read your credit profile, and does not produce a lender quote. Results are planning numbers to help you understand how rate, term, fees, and extra payments interact -- not predictions of what any real offer would look like.

Carry these estimates into real lender disclosure reviews, not the other way around.

Key terms explained before you use the calculator

Understanding what each input represents makes the calculator more useful. These definitions apply to how this tool works -- real lender disclosures may define and apply these terms differently.

Origination fee

An origination fee is a one-time charge some lenders apply when a loan is made. It is not interest -- it is a separate cost that affects the total amount you pay. Lenders handle origination fees in different ways: some deduct the fee from the loan proceeds (meaning you receive less than you borrowed), some add the fee to the loan balance (meaning you pay interest on it), and some charge it separately at closing.

In this calculator's default model, the origination fee is added to the financed balance. This raises the starting principal, which increases both the monthly payment and the total interest estimate. If your actual lender deducts the fee from proceeds instead, the mechanics differ -- what you receive versus what you owe may not match this model's output.

The origination fee is one reason the Annual Percentage Rate (APR) on a loan is higher than the quoted interest rate. APR is designed to capture both the rate and fee costs in a single annualized figure. See /glossary/origination-fee and /glossary/apr for fuller explanations of how these concepts connect.

Term

The loan term is the length of time over which you make payments, typically expressed in months. A 36-month term means 36 equal monthly payments. A 60-month term means 60 payments.

Longer terms produce lower monthly payments because the balance is spread across more periods. The tradeoff is that more periods means more time for interest to accumulate -- so a longer term typically means more total interest paid over the life of the loan, even if each individual payment is smaller.

Shorter terms produce higher monthly payments but less total interest. The choice of term is one of the central tradeoffs in personal loan decisions. See /glossary/loan-term for more on how term length affects cost.

Rate

The rate field in this calculator accepts an annual percentage rate (APR) or an interest rate. Entering the APR gives a more complete picture of cost because APR reflects both the interest rate and any fees the lender includes in the APR calculation.

This calculator does not pull rates from any market source, lender database, or credit bureau. The rate you enter is entirely your own input -- a planning assumption. Entering a single number from an advertisement without adjusting it across a range of possibilities is one of the most common ways borrowers underuse this tool.

Run scenarios with multiple rates to understand how sensitive your payment and total cost are to rate changes. If you are comparing potential offers, enter each rate in a separate scenario rather than assuming the advertised rate is the rate you would receive.

Total cost

Total cost in the context of a personal loan means the full amount you pay to borrow, including principal repayment and all interest and fees. This calculator estimates it as the sum of all scheduled payments (including the origination fee in the financed balance, if entered).

Borrowers often focus on the monthly payment because it fits the mental model of budgeting. But two loans with identical monthly payments can have very different total costs if their terms differ. A lower monthly payment achieved by stretching to a longer term may cost significantly more in total interest than a higher payment on a shorter term.

When comparing loan scenarios or real offers, compare total cost (total of payments over the full term) alongside monthly payment -- not instead of it.

What the inputs mean

Loan amount

The loan principal you want to model -- the amount you assume you would borrow before any origination fee is added. In this calculator's model, the origination fee (if entered) is added on top of this amount, which increases the effective starting balance.

When choosing a loan amount for your scenario, consider: what you actually need versus what you might qualify to borrow. These are not the same question, and borrowing more than you need increases total cost without benefit. See /guides/how-much-can-i-borrow for a framework on thinking through loan amount decisions.

APR or interest rate (%)

The annual rate you enter to model borrowing cost. As noted above, this calculator does not source rates from any external data. Enter an APR if you want to capture fee costs in a single rate figure; enter the interest rate if you want to model interest-only cost separately from fees you enter in the origination fee field.

Run at least three rate scenarios for any planning situation: a conservative (higher) rate, a middle rate, and a more favorable (lower) rate. This gives you a cost range rather than a single point estimate that may not reflect reality.

Term (months)

The number of monthly payment periods. Common personal loan terms range from 24 months to 84 months, though actual available terms depend on the lender and product. Enter the term in months: 36 for three years, 60 for five years, 84 for seven years.

Longer terms reduce the monthly payment but typically increase total interest. Shorter terms do the opposite. The scenarios below illustrate this tradeoff with hypothetical numbers.

Origination fee (optional)

A dollar amount representing a one-time upfront charge. Leave this at zero if you want to model a loan with no origination fee, or if you want to see the interest-only cost before adding fee impact. Enter the fee amount to see how it affects payment and total cost in this model.

Real lenders disclose origination fees in their loan agreements and APR calculations. This field is for your planning estimate only.

Extra payment per month (optional)

An additional amount applied toward principal each month on top of the regular payment. This field lets you model the effect of paying more than required each period.

In this simplified model, the extra amount reduces the balance faster, which lowers total estimated interest. The regular payment stays unchanged. Real lenders may apply prepayments differently -- holding them until a specific date, requiring a written prepayment instruction, or applying them to interest before principal depending on their contract terms. Some loans include prepayment penalties. Confirm your lender's prepayment policy before assuming savings from early payoff.

What the outputs mean

Estimated monthly payment

The regular required payment for each period, based on the entered principal (plus origination fee if applicable), rate, and term. This is the payment before any extra payment amount you entered.

This figure is an estimate for educational planning. Your actual required payment will come from the lender's disclosure documents.

Estimated total interest

Total interest paid over the modeled term after fee treatment and any extra payment effect. This is the cost of borrowing in dollars, separate from the principal you repay.

Comparing estimated total interest across scenarios -- different terms, different rates, different fee structures -- is one of the most useful things this calculator can help you understand.

Estimated total repayment

The sum of all scheduled payments in this model: principal, interest, and the origination fee (if it was added to the financed balance). This is the total outflow over the life of the loan.

This is the number to compare when looking at two loans side by side. If one loan has a lower monthly payment but a higher estimated total repayment, the lower payment is not cheaper -- it is longer.

Fee impact note

When an origination fee is entered, the calculator notes how it was applied (added to balance in this model) and its effect on the cost estimate. Use this as a reminder to check how your actual lender handles fees when you review their disclosure.

How the origination fee changes the estimate

When you add an origination fee to this model, three things happen:

• The financed balance increases, raising the starting principal on which interest accrues
• The estimated monthly payment increases slightly to amortize the larger balance
• The estimated total interest increases because more principal means more interest over time

The size of the effect depends on both the fee amount and the loan term. A $300 fee on a short-term loan has a proportionally larger effect on monthly payment than the same $300 fee on a longer loan, because the fee is amortized over fewer periods.

The table below shows illustrative fee impact across three loan sizes. All numbers are hypothetical and labeled as estimates.

These numbers are rounded estimates for illustration. They show directional relationships, not precise calculations for your situation. The proportional cost of the same origination fee is larger on a smaller loan -- the $300 fee adds a higher percentage to total cost on a $5,000 loan than on a $20,000 loan. That is a meaningful consideration when comparing offers.

How term length affects payment and total cost

The table below shows how the same $15,000 loan at the same rate produces different payments and total costs at different term lengths. These numbers are illustrative.

The 72-month option has the lowest payment -- roughly $278 per month versus $692 at 24 months. But the total repayment is approximately $3,380 higher than the 24-month option. The lower payment is not free: it is a cash-flow tradeoff that costs more in total interest over time.

Neither shorter nor longer terms are universally better. The right term depends on your budget, how long you plan to hold the loan, and what the total cost tradeoff looks like for your situation. The calculator lets you model both sides of this tradeoff with any numbers you choose.

Worked scenarios (illustrative only)

These four scenarios are hypothetical examples. The numbers are illustrative and do not represent any lender's offer or prediction about your application.

Scenario 1: Rate sensitivity -- how much does the rate matter?

Suppose you model a $12,000 personal loan over 36 months with no origination fee.

• At 8% APR: estimated monthly payment near $376, estimated total interest near $1,530
• At 12% APR: estimated monthly payment near $399, estimated total interest near $2,350
• At 18% APR: estimated monthly payment near $434, estimated total interest near $3,610

The payment difference between 8% and 18% is about $58 per month -- not dramatic on a monthly basis. The total interest difference is approximately $2,080 over the loan life. That is the reason APR comparison matters when reviewing offers. A few percentage points in rate can represent a substantial difference in total cost, even if the monthly payment difference feels small.

Educational takeaway: When comparing loan offers, look at total interest and total repayment alongside monthly payment. A rate that seems similar month-to-month may cost meaningfully more over time.

Scenario 2: Fee impact -- same rate, different fee structures

Suppose you model a $10,000 loan at 11% APR over 48 months and want to compare two hypothetical fee structures: no origination fee versus a $500 origination fee added to the balance.

• No fee: estimated monthly payment near $259, estimated total interest near $2,450, estimated total repayment near $12,450
• $500 fee added to balance: estimated monthly payment near $272, estimated total interest near $2,580 (on higher principal), estimated total repayment near $13,080

The monthly payment difference is about $13. The total repayment difference is approximately $630 -- the $500 fee plus added interest on the higher balance.

Educational takeaway: Origination fees do not just appear as a one-time cost. When added to the balance, they increase the principal on which interest accrues, so the total cost impact is larger than the fee dollar amount alone. Always compare total repayment when evaluating fee-inclusive vs. fee-free loan offers.

Scenario 3: Term tradeoff -- budgeting the payment vs. minimizing cost

Suppose you are modeling a $20,000 personal loan at 9% APR and trying to decide between a 48-month and a 72-month term.

• 48 months: estimated monthly payment near $498, estimated total interest near $3,890, estimated total repayment near $23,890
• 72 months: estimated monthly payment near $358, estimated total interest near $5,790, estimated total repayment near $25,790

The 72-month option saves approximately $140 per month. Over the full loan life, it costs approximately $1,900 more in total interest.

Neither option is automatically correct. If your monthly budget requires the lower payment to stay solvent, the extra interest cost may be worth the flexibility. If you can comfortably carry the higher payment, the shorter term reduces your total cost and gets you out of the loan faster.

Educational takeaway: Use the calculator to model both terms at your actual budget constraint, not just the minimum payment scenario. Running both numbers makes the tradeoff visible and specific to your situation.

Scenario 4: Extra payment effect -- does paying more accelerate savings?

Suppose you model an $8,000 personal loan at 13% APR over 60 months with no origination fee, then compare adding a $50 extra payment per month.

• No extra payment: estimated monthly payment near $182, estimated total interest near $2,940, estimated total repayment near $10,940
• $50 extra per month: regular payment stays near $182 plus $50 voluntary additional payment = $232 total monthly outflow; estimated total interest lower due to faster principal reduction

In this simplified model, the extra $50 per month reduces the outstanding principal faster each month, which means less interest accruing on the remaining balance each period. The estimated total interest savings may be several hundred dollars, depending on the timing and compounding assumptions in the model.

Real lenders may apply extra payments differently: some apply them only on scheduled payment dates, some hold them and apply them to interest first, some require a written prepayment instruction. Check your loan agreement for prepayment terms before assuming the savings pattern from this model applies.

Educational takeaway: Even modest extra payments can reduce total interest in a fixed amortization model. The practical value of modeling this is less about predicting exact savings and more about understanding that principal reduction accelerates interest savings -- which informs how you might think about extra cash flow.

Extra payment effects: directional summary

Real lenders may apply prepayments on different dates, hold them until the next scheduled payment date, or restrict early payoff with a prepayment penalty. This model uses simplified rules. Confirm your lender's prepayment policy in the loan agreement before assuming these directional savings apply.

Checklist: comparing total cost across multiple loan scenarios or offers

Use this checklist when you have two or more scenarios in the calculator -- or when you are comparing actual lender disclosures side by side.

Payment comparison

• [ ] Monthly payment for each scenario recorded
• [ ] Confirmed whether the payment includes the origination fee in the financed balance or treats it separately
• [ ] Compared payment to your actual monthly budget constraint -- not just the minimum you could cover

Total cost comparison

• [ ] Estimated total interest for each scenario recorded
• [ ] Estimated total repayment (principal + interest + fees) for each scenario recorded
• [ ] Noted which scenario has the lower total repayment -- this may not be the same as the lower monthly payment

Term comparison

• [ ] Recorded the term for each scenario
• [ ] Noted that the longer-term scenario has a lower payment but likely higher total interest
• [ ] Considered whether the payment savings on the longer term justify the higher total cost in your situation

Fee comparison

• [ ] Modeled each scenario with the origination fee that applies to that offer (or zero if none)
• [ ] Compared total repayment including fee impact, not just interest
• [ ] Noted how fee treatment (added to balance vs. deducted from proceeds) affects the number you actually receive

Rate comparison

• [ ] Recorded the APR for each scenario (APR captures both rate and fee costs)
• [ ] Used the same term when comparing rates -- different terms make rate comparisons misleading
• [ ] Noted total interest difference in dollar terms, not just percentage terms

Extra payment scenario

• [ ] Modeled with and without the extra payment amount you might actually apply
• [ ] Checked the lender's prepayment policy before relying on the model's extra payment savings estimate

Limitations of this estimate

This is a fixed-rate, fixed-payment amortization model. It does not reflect:

• Variable or adjustable interest rates -- if your loan has a rate that can change, this model cannot estimate those changes
• Late fees or penalty charges -- if you miss a payment, actual costs will exceed this estimate
• Deferment or forbearance periods -- pausing payments typically causes interest to continue accruing
• Lender-specific prepayment rules or penalties -- some lenders charge a fee for early payoff; this model does not include that
• Available term or amount limits -- not all lenders offer every term or amount combination; the calculator accepts any numbers you enter without restriction
• Your credit profile or underwriting result -- the calculator has no information about your income, credit history, existing debts, or other factors a lender evaluates
• Taxes, insurance, or related costs -- personal loans do not typically require insurance, but some lenders offer optional credit insurance products that add to cost if selected
• Promotional rates or introductory pricing -- if a rate changes after an introductory period, this fixed-rate model cannot capture that

The only way to get accurate loan cost information for your specific situation is to obtain and carefully read actual lender disclosure documents.

Mistakes to avoid when using this calculator

Entering a single rate from an advertisement without testing a range. Advertised rates often represent the most favorable rate available to the most qualified applicants. The rate you would receive depends on factors this calculator cannot see. Model a range of rates to understand your exposure if the rate is higher than expected.

Treating calculator output as a formal lender quote. This calculator is a planning tool. The output does not represent what any lender would offer, and it has no value as a basis for comparing actual loan offers -- only actual lender disclosures can serve that purpose.

Running the calculator without entering the origination fee. If your lender charges an origination fee and you leave that field at zero, the calculator understates the true cost of the loan. Always include the fee in your scenario if you know or expect one applies.

Comparing monthly payment across loans with different terms. A 36-month loan and a 72-month loan for the same amount will have very different monthly payments. Comparing payments without also comparing total repayment is misleading. Use total repayment as the primary cost comparison metric.

Assuming the extra payment model reflects your lender's actual prepayment rules. This model applies extra payments in a simplified way. Real loans may restrict, delay, or penalize prepayments. Do not rely on this model's extra payment estimate without confirming your lender's actual terms.

Using this calculator instead of reading the actual disclosure. The calculator is for research and understanding. The lender's disclosure documents -- the loan agreement, the Truth-in-Lending disclosure, or equivalent -- are the legal documents that govern the actual terms. Read them before signing.

Before you apply: research steps

The calculator helps you understand how inputs interact. Before you apply for any loan, consider these steps:

• Know your existing obligations. Run the payment estimate and compare it to your current monthly budget. Include all existing debt payments, housing, and other fixed expenses. The question is whether the estimated new payment fits without stretching your cash flow uncomfortably.
• Understand your credit picture. Pull your own credit report before applying. Know what a lender will see. You are not predicting your rate -- you are checking for errors and understanding where you stand.
• Identify the origination fee policy before selecting a lender to compare. Some lenders charge no origination fee; others charge one to six percent or more. This affects the APR and total cost significantly.
• Determine what term range the lender may provide for the amount you need. Not every formal lender quotes every term length.
• Ask about prepayment policy if you might pay off the loan early. Some products include a prepayment penalty; others do not.
• Model at least three rate scenarios in this calculator before applying anywhere, so you understand your total cost range.

For more on what lenders evaluate during the application process, see /loans/personal for an overview of personal loan considerations.

Before you sign: disclosure review checklist

A loan offer is only as useful as your understanding of its terms. Before signing any personal loan agreement, review these items on the lender's actual disclosure documents.

Before you sign a personal loan agreement, check:

• [ ] APR confirmed in the disclosure -- is it what you expected based on your research?
• [ ] Interest rate type -- fixed rate (does not change) or variable (may change)?
• [ ] Finance charge -- total dollar cost of borrowing in interest and fees over the full loan life
• [ ] Amount financed -- the net amount actually disbursed (may be less than you requested if the origination fee is deducted from proceeds)
• [ ] Total of payments -- the full sum of all scheduled payments; this is the actual total you will pay
• [ ] Origination fee -- confirmed amount and whether it is deducted from proceeds or added to balance
• [ ] Payment amount and schedule -- exact amount due each period and due dates
• [ ] Prepayment terms -- can you pay off early? Is there a penalty?
• [ ] Late payment terms -- the fee amount and any grace period
• [ ] Default and acceleration terms -- what triggers a default and what the lender can do
• [ ] Credit insurance or add-on products -- are any optional products included that add to cost? (These should be clearly optional under applicable consumer protection rules)

Limitations of this estimate

This calculator has firm limits you should be aware of before making decisions based on its output.

This calculator cannot tell you:

• What rate you would receive from any lender -- that depends on your credit profile, income, existing debts, and lender-specific underwriting criteria
• Whether you would be approved for any loan amount or term
• How a specific lender handles origination fees, prepayments, or late payments -- those are in the lender's contract
• What the total cost of a loan will be if it has a variable rate
• What your APR would be after a lender calculates it using their actual fee structure
• Which loan product or term is right for your financial situation -- that depends on your individual budget, goals, and risk tolerance
• jurisdiction-specific rules that may affect loan terms or consumer protections in your area

For a framework on thinking about how much to borrow and what payment you can sustain, see /guides/how-much-can-i-borrow.

Alternatives to consider before applying

Using this calculator is part of the research process -- but one of the most useful things research can reveal is whether a loan is the right tool for your situation. A few alternatives worth evaluating:

Delay and save. If the purchase is not urgent, accumulating the funds avoids interest cost entirely. The calculator can show you how much total interest a given loan would cost -- compare that to the cost of waiting.

Borrow a smaller amount. If you can cover part of the need from savings or other sources, borrowing less reduces principal, monthly payment, and total interest. Even a partial reduction in loan amount makes a measurable difference in total cost.

Secured personal loan. If you have an asset you could pledge as collateral (a savings account, CD, or in some cases a vehicle), a secured personal loan may carry different terms than an unsecured option. The tradeoff is that the collateral is at risk if payments fail. Weigh whether the potential rate or term difference is worth that risk for your situation.

Review existing obligations first. If existing high-rate debt is a factor in why you need a loan, it may be worth modeling whether addressing that debt first changes your situation. This is not advice -- it is a question worth asking before adding new debt.

Frequently asked questions

Is this a lender? Is this a quote?

No on both. Loans Plainly is a financial education site. This calculator is an educational planning tool. It does not originate loans, collect your information for lending purposes, connect you with any lender, or produce a binding offer. Every output is an estimate based on inputs you choose.

Does this calculator store my information?

No. Calculations run in your browser using the values you type. Nothing is transmitted to a server or saved between sessions.

Why is the APR higher than the interest rate I entered?

If you entered an origination fee, the calculator adds it to the financed balance, which effectively raises the cost of the loan relative to the stated interest rate. APR is designed to capture that total cost -- rate plus fees -- in a single annualized figure. If you entered the same number in the APR field and the rate field, the APR on the disclosure from a fee-charging lender would still be higher than the interest rate because of how lenders calculate APR. See /glossary/apr for a detailed explanation.

What does "amount financed" mean and why might it differ from what I borrow?

Amount financed is the net amount actually provided to you after any fees are deducted from proceeds. If a lender charges a $400 origination fee by deducting it from disbursement, and you requested $10,000, the amount financed is $9,600 -- but you owe interest on $10,000. This calculator models fees as added to the balance rather than deducted from proceeds, which changes the mechanics slightly. Check your actual lender's disclosure for how they apply the fee.

Why does a lower monthly payment sometimes mean a higher total cost?

Because a lower payment usually means a longer term. When you stretch the same balance over more months, more interest accrues over time -- even though each individual payment is smaller. Run the term-length scenario in this calculator with your own numbers to see the total interest difference. The comparison between a 48-month and 72-month scenario for the same loan often makes this relationship clear.

How do I use this calculator to compare two real loan offers?

Enter each offer's numbers separately -- amount, rate, term, and fee -- and record the estimated monthly payment, estimated total interest, and estimated total repayment for each. Use the comparison checklist above to review both scenarios side by side. For a complete comparison, use the APR from the actual lender disclosure rather than the stated interest rate, since APR reflects total cost more accurately than rate alone.

What is a prepayment penalty and would it show up in this calculator?

A prepayment penalty is a charge some lenders impose if you pay off the loan early or make payments above the scheduled amount. This calculator does not model prepayment penalties. If your loan includes one, the actual cost of paying off early would be higher than this calculator shows. Review the prepayment terms in the lender's disclosure before deciding how to use extra payments.

Does this calculator work for loans other than personal loans?

The underlying math -- fixed-rate amortization -- applies to many loan types. However, this tool is designed for simple fixed-rate personal loan scenarios. For auto loans and business loans, see the specific calculators for those products, which model features relevant to those contexts. See also /calculators/loan-payment and /calculators/amortization for other tools.

What is the difference between an origination fee and interest?

Interest is an ongoing cost -- it accrues each period on the outstanding balance and is paid over the life of the loan. An origination fee is a one-time charge at the start of the loan. Both are costs of borrowing and both are reflected in the APR. A loan with no origination fee but a higher rate may cost more or less than a loan with a fee and lower rate -- it depends on the loan term and total amount. The way to compare is total repayment, not rate or fee in isolation. See /glossary/origination-fee for a fuller explanation of how origination fees work.

How accurate are calculator estimates?

This calculator uses standard fixed-rate amortization formulas applied to the inputs you enter. Within those assumptions, the math is consistent. The accuracy of the output as a prediction of real loan cost depends entirely on how closely your inputs match what a real lender would offer. Since this calculator cannot know your credit profile or lender-specific terms, the estimates are planning benchmarks -- useful for understanding relationships and ranges, not for predicting actual offers.

Plainly summary

• This calculator models a hypothetical fixed-rate personal loan using inputs you choose. It is an educational estimate, not a lender quote or credit decision.
• Origination fees added to the balance increase both your monthly payment and total interest -- include the fee in your scenario for a more complete cost estimate.
• Longer terms reduce monthly payments but typically increase total interest paid over the loan life. Compare total repayment -- not just monthly payment -- when evaluating term options.
• Run scenarios with a range of rates, not just one number from an advertisement. A few percentage points difference in rate can represent meaningful differences in total cost.
• Before signing any loan, read the lender's actual disclosure documents. The APR, total of payments, finance charge, and all other terms in that document govern the loan -- not any calculator estimate.
• For background on personal loan types, costs, and considerations, see /loans/personal. For help thinking through how much to borrow, see /guides/how-much-can-i-borrow.