Financial

Loan Payment Calculator with Amortization Schedule

Calculate loan payments, payoff date, and amortization details for personal, auto, and business loans with flexible payment schedules.

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Search intent guide

Use this page when you need a fast answer to loan calculator

Use this loan calculator when you need a clean payment estimate, payoff date, and amortization view before accepting a personal, business, or auto-style loan offer. It is strongest when you are comparing lenders, terms, or repayment frequency.

loan calculatorLoan Calculator2 examples

Editorial review

Reviewed by Smart Calculator Tools Editorial TeamUpdated April 4, 2026

Best for

  • Screening multiple loan offers with the same principal amount
  • Comparing shorter vs longer terms on payment and total interest
  • Checking how payment frequency affects payoff timing

Before you start

  • Use the actual APR rather than a marketing headline rate
  • Keep fees outside the base math if the lender quote is unclear
  • Compare total interest and payoff date, not payment alone

Inputs

Quick estimates for personal and business loans.

Results

Calculated with your selected compounding and payback frequency.

Monthly payment

$500.95

Origination fee

$0.00

Net proceeds

$25,000.00

Total interest

$5,056.92

Total paid

$30,056.92

Estimated payoff date

Feb 2031

Loan summary

ItemAmount
Loan amount$25,000.00
Origination fee$0.00
Net proceeds$25,000.00
Total interest$5,056.92

Amortization schedule

View monthly or yearly payoff breakdown.

Balance vs interest over timeUSD
BalanceInterestYearly view
MonthPaymentPrincipalInterestBalance
Mar 2026$500.95$344.70$156.25$24,655.30
Apr 2026$500.95$346.85$154.10$24,308.45
May 2026$500.95$349.02$151.93$23,959.43
Jun 2026$500.95$351.20$149.75$23,608.22
Jul 2026$500.95$353.40$147.55$23,254.83
Aug 2026$500.95$355.61$145.34$22,899.22
Sep 2026$500.95$357.83$143.12$22,541.39
Oct 2026$500.95$360.07$140.88$22,181.33
Nov 2026$500.95$362.32$138.63$21,819.01
Dec 2026$500.95$364.58$136.37$21,454.43
Jan 2027$500.95$366.86$134.09$21,087.57
Feb 2027$500.95$369.15$131.80$20,718.42
Mar 2027$500.95$371.46$129.49$20,346.96
Apr 2027$500.95$373.78$127.17$19,973.18
May 2027$500.95$376.12$124.83$19,597.07
Jun 2027$500.95$378.47$122.48$19,218.60
Jul 2027$500.95$380.83$120.12$18,837.77
Aug 2027$500.95$383.21$117.74$18,454.56
Sep 2027$500.95$385.61$115.34$18,068.95
Oct 2027$500.95$388.02$112.93$17,680.93
Nov 2027$500.95$390.44$110.51$17,290.49
Dec 2027$500.95$392.88$108.07$16,897.60
Jan 2028$500.95$395.34$105.61$16,502.27
Feb 2028$500.95$397.81$103.14$16,104.46
Mar 2028$500.95$400.30$100.65$15,704.16
Apr 2028$500.95$402.80$98.15$15,301.36
May 2028$500.95$405.32$95.63$14,896.05
Jun 2028$500.95$407.85$93.10$14,488.20
Jul 2028$500.95$410.40$90.55$14,077.80
Aug 2028$500.95$412.96$87.99$13,664.84
Sep 2028$500.95$415.54$85.41$13,249.30
Oct 2028$500.95$418.14$82.81$12,831.15
Nov 2028$500.95$420.75$80.19$12,410.40
Dec 2028$500.95$423.38$77.57$11,987.02
Jan 2029$500.95$426.03$74.92$11,560.99
Feb 2029$500.95$428.69$72.26$11,132.29
Mar 2029$500.95$431.37$69.58$10,700.92
Apr 2029$500.95$434.07$66.88$10,266.85
May 2029$500.95$436.78$64.17$9,830.07
Jun 2029$500.95$439.51$61.44$9,390.56
Jul 2029$500.95$442.26$58.69$8,948.31
Aug 2029$500.95$445.02$55.93$8,503.28
Sep 2029$500.95$447.80$53.15$8,055.48
Oct 2029$500.95$450.60$50.35$7,604.88
Nov 2029$500.95$453.42$47.53$7,151.46
Dec 2029$500.95$456.25$44.70$6,695.21
Jan 2030$500.95$459.10$41.85$6,236.10
Feb 2030$500.95$461.97$38.98$5,774.13
Mar 2030$500.95$464.86$36.09$5,309.27
Apr 2030$500.95$467.77$33.18$4,841.51
May 2030$500.95$470.69$30.26$4,370.82
Jun 2030$500.95$473.63$27.32$3,897.18
Jul 2030$500.95$476.59$24.36$3,420.59
Aug 2030$500.95$479.57$21.38$2,941.02
Sep 2030$500.95$482.57$18.38$2,458.46
Oct 2030$500.95$485.58$15.37$1,972.87
Nov 2030$500.95$488.62$12.33$1,484.25
Dec 2030$500.95$491.67$9.28$992.58
Jan 2031$500.95$494.75$6.20$497.84
Feb 2031$500.95$497.84$3.11$0.00

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How this Loan Calculator works

Calculates fixed-rate loan scenarios with amortized, deferred payment, and bond-style payoffs. It supports flexible compounding and payback frequencies, plus a monthly or yearly schedule.

Quick guide

Jump to the section you need, then return to the loan calculator.

Best use cases

  • Check monthly payments before taking an auto, personal, or small business loan.
  • Compare shorter and longer repayment terms to balance cash flow against total interest paid.
  • Estimate payoff timing from a planned start date before signing a lender offer.

Inputs

  • Loan amount or face value (for bonds)
  • Annual interest rate (APR)
  • Loan term length in years
  • Start month and year for payoff date estimates
  • Loan type (amortized, deferred, bond)
  • Compounding frequency (including continuous)
  • Payback frequency for amortized loans

Outputs

  • Payment per period (amortized loans)
  • Amount due at maturity (deferred loans)
  • Amount received (bond proceeds)
  • Total interest paid or accrued
  • Monthly or yearly schedule summary
  • Estimated payoff date based on the start date

Assumptions

  • Fixed rate and equal periodic payments
  • No origination fees, insurance, or taxes included
  • Payments are made at the end of each period

Common mistakes

  • Ignoring lender fees and focusing only on the APR and payment shown by the calculator.
  • Comparing loans with different payment frequencies without matching the same compounding assumptions.
  • Choosing the lowest payment without noticing how much extra interest the longer term adds.

Tips

  • Longer terms lower the payment but increase total interest
  • Run multiple rates to see rate sensitivity
  • Add fees separately for a full cost view

Loan Calculator formula guide

Use these loan calculator formulas to audit the output or explain it to someone else.

5 formulas

Monthly Rate r = APR/12 and n = years * 12
Payment M = P * r * (1 + r)^n / ((1 + r)^n - 1)
Total Paid = M * n and Total Interest = Total Paid - Principal
Deferred Amount Due = P * (1 + r/c)^(c*years)
Bond Present Value = Face Value / (1 + r/c)^(c*years)

Loan Calculator examples

Review a ready-made loan calculator scenario, copy it, then tweak inputs to match your case.

Example

2 inputs2 outputs

Car loan example

Inputs

  • Loan 25,000 at 6% APR
  • Term length 5 years

Outputs

  • Monthly payment about 483
  • Total interest about 4,000

Rounded values based on standard fixed payment math.

Example

2 inputs2 outputs

Personal loan example

Inputs

  • Loan 8,000 at 11% APR
  • Term length 3 years

Outputs

  • Monthly payment about 262
  • Total interest about 1,400

Use the same inputs to compare multiple lenders.

Term vs interest (20,000 at 6%)

3 of 3 rows
TermMonthly paymentTotal interest
3 years6081,900
5 years3873,200
7 years2924,500

Longer terms reduce payment but raise total interest.

Payment vs term

Highest: 3y ($608.00)Lowest: 7y ($292.00)
Term lengthMonthly payment

Focus point

3y

$608.00

Position

#1 of 3

Original order

Share of total

47.24%

Total: $1,287.00

PositiveNegative

Assumes a 20,000 loan at 6% APR.

Results are estimates and not a loan offer.

References

  • Standard amortization formula
  • Basic loan payment schedules

Learn more

Guides connected to the loan calculator

Use these short guides when you want the decision framework behind the numbers, not just the raw output.

Category guide

Financial Calculator Guide

Understand when to use payment, return, tax, and budgeting calculators so you can make cleaner money decisions.

FAQ

Loan Calculator FAQ

What does the Loan Calculator do?

Calculates fixed-rate loan scenarios with amortized, deferred payment, and bond-style payoffs. It supports flexible compounding and payback frequencies, plus a monthly or yearly schedule. It is part of our financial toolkit.

When should I use this calculator?

Use it when you need to Check monthly payments before taking an auto, personal, or small business loan. Compare shorter and longer repayment terms to balance cash flow against total interest paid.

What inputs do I need?

Typical inputs include Loan amount or face value (for bonds), Annual interest rate (APR), Loan term length in years.

How are the results calculated?

We follow the formulas and assumptions outlined in the "How this calculator works" section. You will see outputs like Payment per period (amortized loans), Amount due at maturity (deferred loans), Amount received (bond proceeds).

What mistakes should I avoid?

Common mistakes include Ignoring lender fees and focusing only on the APR and payment shown by the calculator. Comparing loans with different payment frequencies without matching the same compounding assumptions.

Can I share or download the results?

Use the Copy link or Print buttons to share your results. If a table or chart appears, you can download the data as CSV.

Is my data stored?

No. Calculations run in your browser and we do not store your inputs.

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Read more in our privacy policy and cookie notice.