Personal Loan Calculator
Free personal loan calculator: monthly payment, total interest and 36 vs 48 vs 60 month comparisons, plus typical 2026 APR ranges by credit band. No sign-up.
Last reviewed: January 2026 · Tax data verified against IRS Publication 15-T & state revenue departments
Related Tools & Resources
How This Calculator Works
A personal loan is unsecured: no collateral, no house or car for the bank to repossess. The lender is pricing pure credit risk, so the APR you are offered is a direct read of your credit profile. That is why the same $15,000 loan can cost anywhere from single digits to 30%+ APR. This calculator takes your amount, APR and term and returns the level monthly payment, total interest and total repaid — everything updates live.
The payment uses the standard annuity M = P x [r(1+r)^n] / [(1+r)^n - 1]. On the default $15,000 at 12% APR for 48 months, that is $395.01 per month, $3,960.36 of total interest and $18,960.36 total repaid. Notice the first payment sends $150.00 to interest — 38% of the payment — because the balance (and therefore the interest) starts at its maximum.
Term choice is where personal loans are won or lost. Comparing the same $15,000 at 12%: 36 months costs $498.21 per month and $2,935.73 in interest; 48 months costs $395.01 and $3,960.36; 60 months costs $333.67 and $5,020.00. Dropping from 48 to 36 months raises the payment $103.21 but saves $1,024.63; stretching to 60 saves $61.34 per month but adds $1,059.64. The comparison cards below run this exact math on whatever you type.
Fees distort the sticker rate. A typical origination fee of 1% - 10% comes off the top: 5% on $15,000 is $750, so you receive $14,250 but repay interest on the full $15,000. When comparing offers, judge them by APR (which folds the fee in) and by total repaid — never by the monthly payment alone. Long terms at high APRs are the classic trap: the payment looks harmless while the interest quietly compounds toward a third of what you borrowed.
Used well, a personal loan is a refinancing tool: consolidating $15,000 of typical 20%+ credit-card debt into a 12% APR, 48-month loan cuts the interest bill from $6,909.86 to $3,960.36 — a $2,949.50 saving — and gives you a fixed end date. Check the savings on your own numbers above, then compare structured payoff scenarios with the loan calculator and amortization calculator.
How It's Calculated
Formula
Step-by-Step
- 1Enter the loan amount P as the figure you will actually repay interest on (after any origination fee, lenders fund less but charge on the full principal).
- 2Convert APR to the monthly rate r = APR / 12 (12% APR gives r = 0.01).
- 3Set n to the term in months (48 for a four-year loan).
- 4Compute the level payment M = P x [r(1+r)^n] / [(1+r)^n - 1]; if APR is 0%, M = P / n.
- 5Multiply M by n for total repaid; subtract P for total interest.
- 6Compare terms by re-running the formula at 36, 48 and 60 months — the cards below do this automatically.
Example
For detailed data sources and full methodology, see our Methodology & Data Sources page.
Key Rates & Data for 2026
Excellent credit (720+), typical 2026
~8% - 12%
Good credit (690-719), typical 2026
~13% - 18%
Fair credit (630-689), typical 2026
~19% - 25%
Poor credit (below 630), typical 2026
~26% - 36%
Payment per $1,000 @ 12% / 48 mo
$26.33
Typical origination fee
1% - 10% of the loan
Frequently Asked Questions
What would a $15,000 personal loan cost per month?
What credit score gets the best personal loan rates?
Is a 60-month personal loan ever a good idea?
Personal loan or credit card: which is cheaper for $15,000?
What is an origination fee on a personal loan?
Can I pay off a personal loan early?
Why are personal loan rates higher than mortgage rates?
Related Calculators
Link to This Calculator
Help others find this free tool — add a link to your website or blog.
<a href="https://thetaxcalc.com/personal-loan-calculator" title="Personal Loan Calculator 2026 — Payment, Interest & APR Bands">Personal Loan Calculator 2026 — Payment, Interest & APR Bands</a>
Next Steps
See take-home pay for $30K–$500K across all 50 states
Side-by-side tax comparison for any two states
Salary you'd need if you move to another state
Project your retirement savings with compound growth
Key tax terms explained in plain English
Full federal bracket breakdown with examples
Explore More Tools