Calculate monthly personal loan payments, total interest, origination fees, actuarial APR, and amortization schedules with our free personal loan calculator.
A personal loan is a closed-end installment loan in which a borrower receives a lump-sum principal amount upfront and agrees to repay the debt through predetermined, periodic payments over a defined maturity horizon.
Many consumer personal loans are structured as fixed-rate installment credit, where the nominal interest rate and scheduled monthly payments remain constant throughout the borrowing term. While personal loans are frequently unsecured (issued based primarily on credit history, verifiable income, and debt-to-income ratio without collateral), lenders also offer secured personal loans backed by pledged collateral such as savings accounts, certificates of deposit (CDs), or vehicles.
Personal loan terms commonly range from about 12 to 84 months (1 to 7 years), although available terms, minimums, maximums, and interest rate tiers vary by lender, loan product, and individual creditworthiness.
When an installment loan is funded, repayment occurs according to a structured amortization schedule. Each scheduled monthly payment is split into two distinct financial components:
The fee paid to the lender for borrowing the remaining balance during the monthly billing cycle (Interest = Prior Balance × Monthly Rate). In the early stages of a loan, interest comprises the largest portion of your monthly payment.
The remainder of your payment applied directly toward reducing the outstanding debt balance (Principal Reduction = Payment − Interest). As the principal balance drops, consecutive monthly interest charges decrease, accelerating equity payoff.
As previous payments systematically reduce the remaining principal balance, less interest accrues in subsequent cycles. Consequently, an increasingly larger percentage of each subsequent payment is directed toward principal reduction until the debt is fully retired at maturity. To review the principal and interest allocation across every payment, see our loan amortization calculator.
The fixed monthly installment for an ordinary amortizing personal loan is calculated using the standard closed-end annuity formula. For broader installment-loan scenarios and alternative payment frequencies, see our general installment loan calculator:
Consider a consumer borrowing $20,000.00 at a 10.0% stated APR over a 5-year term (60 monthly payments) starting in August 2026 with no upfront fees:
Calculation Invariant: Using the calculator's full-precision amortization schedule, total scheduled repayment is $25,496.45 (where each unrounded monthly payment of $424.9409... is amortized over exactly 60 periods).
Some lenders charge upfront origination fees, and the fee amount and treatment vary by lender and loan product. In illustrative market tiers, origination fees commonly range from 1% to 8% of the gross borrowed principal.
Because $1,000 is deducted upfront, borrowing $19,000 in net usable cash while repaying $25,496.45 increases the true annualized borrowing cost above the 10.0% nominal rate. Because fees can change the effective borrowing cost, our APR calculator can be used to explore fee-inclusive APR calculations.
This calculator estimates fee-inclusive APR using an actuarial cash-flow discounting model for the payment structure and fee inputs supported by the tool. Borrowers can calculate fee-inclusive APR to evaluate how different upfront closing charges impact overall financing expenses:
| Fee Scenario ($20,000 @ 10% 5Y) | Origination Fee | Net Disbursed Cash | Monthly Payment | Total Repaid | Estimated Actuarial APR |
|---|---|---|---|---|---|
| Fee-Free Baseline | $0.00 (0%) | $20,000.00 | $424.94 | $25,496.45 | 10.000% |
| 1.0% Origination Fee | $200.00 | $19,800.00 | $424.94 | $25,696.45 | 10.435% |
| 5.0% Origination Fee | $1,000.00 | $19,000.00 | $424.94 | $26,496.45 | 12.239% |
| 8.0% Origination Fee | $1,600.00 | $18,400.00 | $424.94 | $27,096.45 | 13.664% |
*Note: U.S. Regulation Z provides prescribed calculation methods for closed-end consumer credit disclosures. The calculator provides an educational mathematical estimate and is not a formal substitute for official lender-provided Truth in Lending Act (TILA) disclosures.
Selecting a personal loan duration requires balancing immediate monthly budget constraints against cumulative lifetime interest expenses:
| Term Horizon | Monthly Payment ($PMT$) | Total Interest Paid | Total Repayment Cost | Interest % of Principal |
|---|---|---|---|---|
| 2 Years (24 Months) | $922.90 | $2,149.57 | $22,149.57 | 10.7% |
| 3 Years (36 Months) | $645.34 | $3,232.37 | $23,232.37 | 16.2% |
| 4 Years (48 Months) | $507.25 | $4,348.06 | $24,348.06 | 21.7% |
| 5 Years (60 Months) | $424.94 | $5,496.45 | $25,496.45 | 27.5% |
| 7 Years (84 Months) | $332.61 | $7,939.26 | $27,939.26 | 39.7% |
Consolidating multiple revolving credit cards into a single fixed-rate personal loan is a common consumer strategy. Use a debt consolidation calculator to compare multiple balances, interest rates, payment obligations, and consolidation scenarios. If the goal is specifically to eliminate revolving card balances, a credit card payoff calculator can show alternative repayment timelines.
• Card A: $8,000 @ 19.99% ($240.00/mo; ~49.1 mo payoff)
• Card B: $7,000 @ 24.99% ($225.00/mo; ~50.6 mo payoff)
Total: $15,000 debt @ $465.00/mo
• $15,000 balance + $750 (5% financed fee) = $15,750 principal
• Rate: 12.0% APR over 5 Years (60 Months)
New Payment: $350.35/mo (14.170% Actuarial APR)
Critical Guardrail: Lower monthly payment does not automatically mean lower total cost. When consolidating revolving debt, borrowers must evaluate both immediate monthly payment relief and total lifetime borrowing cost across the full repayment horizon.
In this calculator's model, additional principal payments reduce the outstanding principal faster, shortening the modeled repayment period and reducing future interest. For broader payoff-strategy comparisons, use a debt payoff calculator to model accelerated repayment approaches:
*Prepayment Note: Whether early payoff is penalty-free depends on the loan agreement, lender, loan product, and applicable law. Borrowers should verify the specific prepayment provisions in their promissory note.
Borrowing excess funds increases cumulative interest charges and raises upfront percentage-based origination fees.
Extending loan duration to reduce monthly payments increases the total lifetime interest paid over the life of the loan.
Failing to factor in upfront fee deductions can leave you short of the net cash required for your planned expense.
Some lenders may offer rate discounts for automatic electronic payments depending on lender policy.
When comparing a replacement loan against your existing balance, a personal loan refinance calculator can help evaluate the break-even point after factoring in new closing fees and revised interest rates.
A personal loan is a closed-end installment loan provided by a bank, credit union, or online lender that disburses a lump sum of money upfront. Borrowers repay the debt in fixed monthly payments over a predetermined term (commonly 12 to 84 months, or 1 to 7 years) with interest.
Personal loan payments are calculated using the ordinary annuity formula: PMT = P × [r(1 + r)ⁿ] / [(1 + r)ⁿ − 1], where P is principal, r is the monthly periodic interest rate (APR / 12 / 100), and n is total months.
When an origination fee (commonly 1% to 8% in illustrative market tiers) is deducted from proceeds, net cash received equals the gross loan amount minus the fee. For example, a 5% fee on a $20,000 loan reduces net disbursed cash to $19,000 while monthly payments remain based on the full $20,000 principal.
The nominal interest rate reflects the basic annualized percentage charged on the principal balance. The Annual Percentage Rate (APR) incorporates both the nominal interest rate and prepaid lender finance charges (such as origination fees), reflecting the true annualized cost of borrowing.
This calculator estimates fee-inclusive APR using an actuarial cash-flow discounting model that solves for the internal rate of return (i) equating net disbursed proceeds to the present value of scheduled monthly payments: Net Proceeds = Σ [PMT_t / (1 + i)^t].
Yes. Consolidating multiple high-interest credit cards into a single fixed-rate personal loan combines balances into one monthly payment, often at a lower interest rate, establishing a structured payoff timeline.
Not necessarily. A lower monthly payment can result simply from extending the repayment term over more years. While this provides monthly cash-flow relief, it can increase total cumulative interest paid over the life of the loan.
Shorter loan terms require higher monthly payments but minimize total interest charges. Longer loan terms lower monthly payments but increase total lifetime interest expenses because interest compounds over a longer duration.
In this calculator's model, extra monthly payments reduce principal balance faster, which shortens the remaining repayment duration and reduces future interest charges. Borrowers should always verify specific prepayment provisions with their lender.
No. While many personal loans are unsecured (requiring no collateral), lenders also offer secured personal loans backed by pledged assets such as savings accounts, certificates of deposit (CDs), or vehicles.
This calculator executes double-precision floating-point arithmetic using standard discrete amortization algorithms and bisection root-finding for actuarial APR cash-flow discounting. 100% of mathematical evaluations execute locally within your browser; no financial inputs, loan parameters, or personal data are stored or transmitted to external servers.
Educational Disclaimer: This calculator is designed for educational, analytical, and illustrative purposes only and does not constitute formal financial, legal, tax, or lending advice. Final loan terms, annual percentage rates, closing fees, and qualification requirements are established exclusively by licensed financial institutions following formal credit underwriting.