How this calculator works
This calculator estimates the monthly payment for a fixed-rate personal loan using the loan amount, APR, and term in months. Personal loans are typically unsecured installment loans—approved based on credit, income, and other factors rather than collateral like a house or car.
The calculator applies standard amortization: each payment covers interest on the remaining balance plus a portion of principal. Over time, the interest portion shrinks and the principal portion grows, even though the payment stays the same on a fixed-rate loan.
Beyond the monthly payment, the calculator estimates total interest, total repayment, an optional origination fee, payoff date, and how much interest you may save by making an extra monthly payment. The origination fee is shown separately as an upfront cost so the payment stays tied to the loan amount you enter.
For comparing payoff strategies across multiple debts, use the debt payoff calculator. For a single credit card with minimum plus extra payments, try the credit card payoff calculator.
What affects the result
Three inputs drive the monthly payment and total cost. Term length creates a tradeoff between affordability now and total interest over time.
- Loan amount is the principal you borrow. A larger amount raises both the monthly payment and total interest paid over the life of the loan.
- APR reflects the annual cost of borrowing in this simplified model. Higher APR means higher payments and more total interest. Lenders quote APR to help compare offers, though fee structures can still differ.
- Term spreads repayment over more or fewer months. Longer terms lower the monthly payment but often increase total interest because the balance accrues interest for more months.
- Origination fee is an upfront charge some lenders deduct from proceeds or collect at closing. This calculator shows it separately in total repayment rather than folding it into the payment formula.
- Extra monthly payment reduces principal faster, shortening the payoff timeline and lowering total interest when applied consistently.
When comparing lenders, check whether the origination fee is deducted from proceeds or added to the amount borrowed. Two loans with the same APR can have different total costs if fee structures differ. A $10,000 loan with a 5% origination fee may deliver $9,500 in proceeds if the fee is deducted upfront, even though you repay the full $10,000 plus interest.
For generic installment loan math without personal-loan-specific fee handling, the loan payment calculator offers a simpler entry point. For vehicle-specific financing with down payment and trade-in, use the auto loan calculator.
Real-world examples
Example 1: Debt consolidation. You owe $12,000 across credit cards averaging 22% APR and qualify for a personal loan of $12,000 at 10.5% APR for 48 months with a 4% origination fee. The calculator estimates a fixed monthly payment around $307 on the $12,000 principal, with the $480 fee shown separately. Compare total repayment here against your current card payoff timeline using the credit card payoff calculator or multi-debt comparison in the debt payoff calculator.
Example 2: Home improvement without a HELOC. You need $18,000 for a roof repair and prefer not to tap home equity. At 9% APR over 5 years with no origination fee, the monthly payment is roughly $374. Compare with a secured HELOC or home equity option if you have one—the personal loan may cost more in rate but avoids putting your home at risk.
Example 3: Accelerating payoff with extra payments. You borrow $8,000 at 12% APR for 3 years and later find $75 per month in budget for extra payments. Adding $75 to each scheduled payment can shorten payoff by several months and reduce total interest meaningfully. Run the calculator with and without the extra amount to see the specific savings.
Example 4: Choosing between term lengths. The same $15,000 loan at 11% APR costs roughly $489 per month over 3 years versus roughly $326 per month over 5 years. The longer term eases cash flow but typically adds thousands in total interest. Test both terms before choosing based on monthly payment alone.
Common mistakes
Comparing monthly payments without total cost. A lower payment on a longer term often means paying more interest overall. Review total repayment and total interest, not just the monthly number.
Ignoring origination fees when comparing offers. A loan with a slightly lower APR but a high origination fee may cost more than a no-fee loan at a marginally higher rate. This calculator shows the fee separately—include it in your comparison.
Assuming consolidation eliminates debt. Moving credit card balances to a personal loan simplifies payments and may reduce interest, but the debt still exists. Without changing spending habits, new card charges can stack on top of the loan payment.
Not checking prepayment rules. Some lenders charge prepayment penalties or apply extra payments to future installments rather than principal unless you specify otherwise. The calculator assumes extra payments apply to principal immediately.
Choosing the maximum term for the lowest payment. Stretching a $10,000 loan to 7 years may feel comfortable monthly but keeps you in debt longer and increases total interest. Match term length to how long you actually need the funds.
Using personal loan estimates for secured products. Auto loans, mortgages, and HELOCs have different collateral, fee, and rate structures. Use the auto loan calculator for vehicle purchases and the loan payment calculator for mortgage estimates.
When to use this calculator
Use this calculator when you are evaluating a fixed-rate unsecured personal loan offer or planning a consolidation, home improvement, medical expense, or major purchase funded by installment credit.
Reach for it before signing loan documents to verify that the quoted APR, term, and fee produce a payment and total cost you expected. Run scenarios with different terms and extra payment amounts to find a balance between monthly affordability and total interest.
Use the debt payoff calculator when you have multiple debts and want to compare snowball vs. avalanche strategies before deciding whether consolidation makes sense. Use the credit card payoff calculator for a single high-rate card balance. Use the loan payment calculator for generic fixed-rate installment math. Use the auto loan calculator when the loan finances a specific vehicle purchase.
Skip this calculator for variable-rate loans, revolving credit lines, or secured home equity products—those need different tools.
Related calculators
- Debt payoff calculator — compare snowball and avalanche strategies across multiple debts before deciding whether to consolidate into a personal loan.
- Credit card payoff calculator — estimate payoff timing and total interest on a single credit card balance to compare against a consolidation loan.
- Loan payment calculator — estimate monthly payments and total interest for generic fixed-rate installment loans.
- Auto loan calculator — estimate vehicle loan payments with down payment, trade-in, sales tax, and amortization schedule.
FAQ
Does the monthly payment include the origination fee?
No. This calculator treats the origination fee as an upfront cost and shows it separately in total repayment. Some lenders deduct the fee from loan proceeds or finance it differently, which can affect the cash you actually receive.
How does an extra monthly payment change the result?
An extra monthly payment is added to the scheduled payment and applied to principal. That reduces the remaining balance faster, which shortens the payoff time and lowers total interest because less principal accrues interest in later months.
Is APR the same as interest rate?
APR is intended to reflect the annual cost of borrowing including certain fees. For this simplified estimate, APR is used as the annual rate in the payment formula, while the origination fee is shown separately.
Can I use this for debt consolidation?
Yes. Enter the consolidation loan amount, APR, and term to estimate the new fixed payment. Compare total repayment here against your current credit card or multi-debt payoff timeline before deciding.
Why is the origination fee shown separately?
Lenders handle origination fees differently—some deduct them from proceeds, others add them to the amount financed. Showing the fee separately keeps the monthly payment tied to the loan amount you enter while still reflecting total cost.
How much can an extra monthly payment save?
Savings depend on the loan amount, APR, term, and extra amount. On a $15,000 loan at 11% over 5 years, an extra $100 per month can save hundreds or thousands in interest and shorten payoff by a year or more.
Does a longer term always make a loan cheaper?
No. A longer term lowers the monthly payment but usually increases total interest because the balance accrues interest for more months. Compare total repayment across term lengths, not just the monthly payment.
What credit score do I need for a personal loan?
Requirements vary by lender. Better credit generally qualifies for lower APRs. This calculator does not estimate rates from credit scores—enter the APR from a prequalification or offer you received.
Are personal loans secured or unsecured?
Most personal loans are unsecured, meaning they are not backed by collateral. That is why rates are often higher than secured loans like mortgages or auto loans. Missed payments damage credit but do not directly trigger foreclosure or repossession.
Should I consolidate credit cards into a personal loan?
Consolidation can simplify payments and reduce interest if the personal loan APR is lower than your cards. It does not eliminate debt. Compare this estimate with the debt payoff calculator and credit card payoff calculator before proceeding.