Weekly Loan Payment Calculator

Plan cash flow with precise weekly payment estimates. Compare scenarios using fees, terms, and extras. See totals immediately, then download a clean report today.

Calculator Inputs
Enter values, then press Calculate. Results appear above this form.
All fields accept decimals. Commas are allowed.
Used for display and export labels.
Total amount you plan to borrow before adjustments.
Converted to a weekly rate using 52 weeks.
Choose years or weeks, then enter the value.
Weeks are calculated as years × 52.
Used to label payment dates in the schedule.
Reduces the financed amount before fees.
Calculated on financed amount after down payment.
Financing the fee increases the borrowed balance.
Applied directly to principal every week.
Optional lump sum applied on a chosen week.
Use 0 to disable the one-time payment.
Rounds up the base payment to the selected unit.
Reset
Example Data Table
Sample figures to illustrate typical inputs and outputs.
Scenario Loan Amount Annual Rate Term Fee Down Payment Extras What You Track
Starter 10,000 12.0% 2 years 1.0% upfront 500 +10 weekly Weekly payment, interest, payoff weeks
Fee Financed 25,000 9.5% 3 years 2.0% financed 0 None Borrowed balance, total paid, APR estimate
Lump Sum Boost 15,000 14.0% 90 weeks 0% 1,000 +250 at week 10 Interest saved, new payoff date
Formula Used

This calculator converts the annual rate to a weekly rate using 52 weeks: r = (annualRate ÷ 100) ÷ 52.

The base weekly payment for a fully amortizing loan is: PMT = P × r ÷ (1 − (1 + r)−n), where P is the borrowed balance and n is the number of weeks. If the rate is zero, the payment is P ÷ n.

Extras are applied to principal after interest is calculated each week, which can shorten the payoff time and reduce total interest.

How to Use This Calculator
  1. Choose your currency for display and exports.
  2. Enter the loan amount, annual interest rate, and term.
  3. Add optional down payment and origination fee settings.
  4. Use extra weekly payments or a one-time payment to model faster payoff.
  5. Press Calculate to see results above the form.
  6. Download CSV for the full schedule, or PDF for a report.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.