Personal Loan Calculator: What Will This Loan Really Cost You?
How much will this personal loan cost?
A personal loan offer comes with a monthly payment number β but that number alone doesn't tell you what the loan actually costs. The true cost is the total interest paid over the life of the loan, and it's often 20β50% on top of whatever you borrow. Before signing, you need to see that number clearly. This calculator takes your loan amount, interest rate, and term to show you exactly what you'll pay each month, how much of that goes to interest vs. principal in the early months (usually more than people expect), and what the complete cost of borrowing looks like across the full term. Personal loans are used for everything from debt consolidation to home renovations, medical bills, and major purchases. They're unsecured debt β no collateral required β which is why rates are higher than mortgage or auto loan rates. The average personal loan rate for a borrower with good credit is 10β14% APR; for fair credit, 18β28% APR. The calculator also lets you compare two loan scenarios side by side: a shorter term with higher monthly payments vs. a longer term with lower monthly payments. The difference in total interest paid is often dramatic and makes the right choice obvious. Use this before applying so you know exactly what you're agreeing to β and whether a different term or amount makes more sense for your situation.
- βComparing loan offers from multiple lenders on different terms
- βDeciding between a shorter or longer repayment term
- βCalculating whether a personal loan is cheaper than carrying a credit card balance
- βPlanning a home improvement project and need to know total borrowing cost
- βEvaluating whether to consolidate debts into a single personal loan
Marcus needs $12,000 to cover a kitchen renovation. His credit union offers two options: $12,000 at 9.5% for 36 months ($384/month, $1,826 total interest) or $12,000 at 10.2% for 60 months ($256/month, $3,360 total interest). The 60-month loan saves $128/month but costs $1,534 more in total interest. Marcus chooses the 36-month loan β the higher payment fits his budget and he saves $1,534 in interest. The calculator made the right choice obvious in seconds.
Personal Loan Calculator
Monthly Payment Β· Amortization Β· Term Sensitivity Β· Rate Comparison
Results update in real time as you adjust any input.
Your Loan
Avg personal loan: 11β12% Β· Good credit: 7β9%
Common: 1β5% Β· Many lenders waive on good credit
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About This Calculator
This personal loan calculator uses the standard amortisation formula to compute monthly payments, total interest, true total cost (including origination fees), and full amortisation schedule for any loan amount, APR, term, and origination fee. It also calculates payment-to-income ratio against your monthly income, and provides a comparison against a second loan offer for side-by-side evaluation. All results update in real time as you adjust any input.
The Breakdown tab renders a horizontal bar chart of cost components (principal, interest, origination fee) and a vertical bar chart comparing your loan vs the comparison offer's total interest, plus a payment-to-income ratio gauge. The Amortization tab shows a stacked area chart of per-payment principal and interest allocation throughout the loan, and a line chart of remaining balance vs cumulative interest paid. The Term Impact tab shows a bar chart of total interest at all six standard terms (12, 24, 36, 48, 60, 72 months) with your term highlighted, and a line chart of monthly payment by term.
A loan score (0β100) penalises high APR (above 12β25%), long terms (above 36β60 months), heavy payment-to-income ratio (above 10β20%), and origination fees above 3%. Dynamic accent: emerald (Favorable, β₯80), indigo (Acceptable, β₯60), amber (Costly, β₯40), red (High Risk). Four risk flags auto-trigger for APR above 20%, income ratio above 15%, origination fee above 3%, and term above 60 months. The PDF export includes the first 12 months of the amortisation schedule and the full term sensitivity table.
Results are estimates only and do not constitute financial, tax, or legal advice. Always consult a qualified professional before making financial decisions.
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