Interest Calculator PWA

Select or enter Loan Parameters below.

Make sure you click the
Recalculate Button at the bottom.
Hold your mouse over the Help Icons

to see important information.

Payment Type/Frequency
Payments Per Year (PPY)-- 12
Days In Payment (DIP)-- 30 The usual number of days between regular payments

Loan Date: 1st Pmt Date:
= Days To First Payment:

Odd Days The number of days that is beyond or less than the normal days to first payment.
You will pay additional interest for positive days, and less interest for negative days.
Days In Year The number of days in a Loan Year. This value is used to calculate Daily Finance Charges.
--Most Financial Institutions use 360.
Principal:
APR (as 15.50):
Number of Payments: .
Set Fixed Payment Check this to set a Fixed Payment Amount.
The Calulations will show the Number of Payments needed.
Fixed Payment Amount Final Payment Amount

Loan Payment: $ 0.00
Total of Payments: $ 0.00
Total Finance Charges: $ 0.00

Balloon Amt- 0.00 Balloon Interest- 0.00
Balloon Amt + Interest = Final Payment
.. .. .. ..

Enter the Original Terms of the Loan
below to calculate the Payoff for a
Precomputed/ Rule of 78's Contract

Payment Type/Frequency
Payments Per Year (PPY)-- 12
Days In Payment (DIP)-- 30 The usual number of days between regular payments

Loan Date:
First Pmt : Days To 1st:
Odd Days: The number of days that is beyond or less than the normal days to first payment.
You will pay additional interest for positive days, and less interest for negative days.

The number of days that is beyond or less than the normal days to first payment.
You will pay additional interest for positive days, and less interest for negative days.

Acq Fee:

Some states allow an Acquisition Fee that the Lender can charge on payoff.

#Pmts: Include the Odd Last Payment in this number.
Payoff Date: Periods Passed -- 0
Periods Earned -- 0 May be higher than the Actual Periods Passed. Once a Due Date has passed, the Interest for the Next Period is deemed to have been Earned.

May be higher than the Actual Periods Passed. Once a Due Date has passed, the Interest for the Next Period is deemed to have been Earned.

Last Pmt: ""
Current Balance:
Original Finance Charges:
APR (as 15.50):
Orig Pmt Amt:
Use Months Check this to set the Payoff to calculate as whole Months instead of Weekly or Bi-Weekly Periodic

Check this to set the Payoff to calculate as whole Months instead of Weekly or Bi-Weekly Periodic

OR:

Finance Charge Rebate:

Estimated Payoff:

Note that the Rule of 78's Calculation shown may not be valid for your state, since some jurisdictions require that the "Actuarial" or "Pro-Rata" Rebate calculation be used.

Calculate the Days/Weeks/Months/Years
between two dates:

Date 1:
Date 2:

# Days:
# Weeks:
# Bi-Weeks: - 14 Day Periods
# Semi-Monthly: - 15 Day Periods
# Months:
# Years:
All Together:

Calculate the Loan APR
from the Payment Details

Payment Type/Frequency
Payments Per Year (PPY)-- 12
Days In Payment (DIP)-- 30 The usual number of days between regular payments

Number of Payments:
Regular Payment:
Loan Principal:
Balloon Amt:
Guess of APR:

Estimated APR:

Calculate Credit Card Debt over Time

Credit Card Balance:
Credit Card APR: Enter as 21.99
Minimum Principal %:
Minimum Montly Payment $:
Monthly CC Fee:

Payment Amount:
Note: This is just the Next Payment,
Payment Amount may vary over time.

Breakdown of the Payment:

Principal:
Interest:
Fee:

Total Projected Interest:

Total Time Required:

Explanations:
Payment Interest= (APR / 12) x Principal Balance
Minimum Principal % -- % of the Principal required
to be paid each month
Minimum Pmnt $ -- Minimum Payment even if
the Minimum Principal + Fees + Interest is less.
Payment = Interest + Fees + Min Principal
OR Minimum Pmnt, whichever is more.

Calculate Florida Doc Stamp Tax

Amount Financed
Doc Stamp Rate
Tax Amount:
Total To Finance:

Reverse Calculate Florida
Doc Stamp Tax from Total Financed

Total Amount Financed
Doc Stamp Rate
Tax Amount:
Initial Finance Amt:

Calculate Finance Base Amount from
Doc Stamp Tax

For FL DR-225 or online DS Tax Report
Doc Stamp Tax Amt

Doc Stamp Rate
Base Amount Financed:

This is an estimate, and may not be exact.

Bettencourtt Technologies Quick Multi-Calc V7.25 05/2026
-- This Version not yet ready for Public Release --
Last Edit: 2026/06/05 16:45

IMPORTANT NOTICE:

All Calculations Shown are for comparison purposes ONLY.
No warranty of any kind is made as to the accuracy of
the calculations on these pages for Consumer Transactions.
Financial Regulations or Laws in your Country or State
may require different calculations or methodologies.

Select or enter Loan Parameters below.

Enter the Original Terms of the Loan
below to calculate the Payoff for a
Precomputed/ Rule of 78's Contract

Calculate the Days/Weeks/Months/Years
between two dates:

Calculate the Loan APR
from the Payment Details

Calculate Credit Card Debt over Time

Calculate Florida Doc Stamp Tax

Reverse Calculate Florida
Doc Stamp Tax from Total Financed

Calculate Finance Base Amount from
Doc Stamp Tax

More Calculations are coming Soon.
To request a Specific Calculation email us at:
multicalc \at/ bettencourtt.com

Bettencourtt Technologies Quick Multi-Calc V7.25 05/2026 -- This Version not yet ready for Public Release -- Last Edit: 2026/06/05 16:45

IMPORTANT NOTICE:

All Calculations Shown are for comparison purposes ONLY. No warranty of any kind is made as to the accuracy of the calculations on these pages for Consumer Transactions. Financial Regulations or Laws in your Country or State may require different calculations or methodologies.

Select or enter Loan Parameters below.

Enter the Original Terms of the Loan below to calculate the Payoff for a Precomputed/ Rule of 78's Contract

Calculate the Days/Weeks/Months/Years between two dates:

Calculate the Loan APR from the Payment Details

Calculate Credit Card Debt over Time

Calculate Florida Doc Stamp Tax

Reverse Calculate Florida Doc Stamp Tax from Total Financed

Calculate Finance Base Amount from Doc Stamp Tax

More Calculations are coming Soon. To request a Specific Calculation email us at: multicalc \at/ bettencourtt.com

Bettencourtt Technologies Quick Multi-Calc V7.25 05/2026
-- This Version not yet ready for Public Release --
Last Edit: 2026/06/05 16:45

All Calculations Shown are for comparison purposes ONLY.
No warranty of any kind is made as to the accuracy of
the calculations on these pages for Consumer Transactions.
Financial Regulations or Laws in your Country or State
may require different calculations or methodologies.

Enter the Original Terms of the Loan
below to calculate the Payoff for a
Precomputed/ Rule of 78's Contract

Calculate the Days/Weeks/Months/Years
between two dates:

Calculate the Loan APR
from the Payment Details

Reverse Calculate Florida
Doc Stamp Tax from Total Financed

Calculate Finance Base Amount from
Doc Stamp Tax

More Calculations are coming Soon.
To request a Specific Calculation email us at:
multicalc \at/ bettencourtt.com