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- The daily balance method; and
- The average daily balance method.
The examples below use end-of-day-balances and refer to the interest posting & compounding periodperiods used.The interest compounding period
Terms
Compounding Period: is the span of time which at the end of which savings in a client’s account earn interest. Interest periods may vary; they may be daily, weekly, bi-weekly, monthly, quarterly, semi-annual or annual.Examples of each method are provided using account activity for one month and the interest is calculated at the end of the day, end of the month - 31st Mar 2013the interest earned over this period on the savings account balance in accumulated with the balance of the account is applicable for interest calculations in future periods. As a result the interest is compounded. The following compounding period frequencies are supported:
- Daily: compounding occurs on the balance each day and is accumulated with the balance so that the next days interest calculation takes it into account.
- Monthly: compounding occurs on the interest earned over the entire month. Next months interest calculation is on the savings account blance + any interest earned in previous compounding period.
Posting Period: is the span of time which at the end of the interest earned over this period on savings account is credited or posted to the clients account. A posting period may include many compounding periods. The following posting period frequencies are supported:
- Monthly: The period mirrors the calendar month so periods are 01 Jan - 31 Jan, 01 Feb - 28 Feb, 01 Mar - 31 Mar etc
- Quarterly: The period mirrors the calendar quarter so periods are 01 Jan - 31 Mar, 01 Apr - 30 Jun etc
- Annually: Ther period mirrors the calendar year so perdios are 01 Jan - 31 Dec for each year.
Nominal annual interest rate %: Also known as nominal APR, its nominal as this rate doesnt reflect influences such as inflation or compounding. The percentage is represented as a number e.g. 20 for 20% NOT as a fraction 0.2 = 20%
Interest Calculation Method: We support Daily Balance and Average Daily Balance
Days in Year: Some people want their interest calculations to be done over a 360 day year instead of 365/366 day year.
Account Activity
The client makes the following transactions throughout the month on an account opened on 01 March 2013:
Date | Transaction | Amount |
---|---|---|
01 Mar 2013 | Deposit | 1200 |
02 Mar 2013 | Withdrawal | 100 |
10 Mar 2013 | Withdrawal | 400 |
15 Mar 2013 | Deposit | 200 |
16 Mar 2013 | Withdrawal | 900 |
18 Mar 2012 | Deposit | 200 |
21 Mar 2012 | Deposit | 700 |
31st Mar 2013 | Withdrawal | 100 |
Transaction | Date | Amount | Balance(EOD) | Number of Days | Cumulative Balance |
---|---|---|---|---|---|
Balance | 28th Feb 2013 | 0 | 0 | - | 0 |
Deposit | 1st Mar 2013 | 1200 | 1200 | 1 | 1200 |
Withdrawal | 2nd Mar 2013 | 100 | 1100 | 8 | 8800 |
Withdrawal | 10th Mar 2013 | 400 | 700 | 5 | 3500 |
Deposit | 15th Mar 2013 | 200 | 900 | 1 | 900 |
Withdrawal | 16th Mar 2013 | 900 | 0 | 2 | 0 |
Deposit | 18th Mar 2013 | 200 | 200 | 3 | 600 |
Deposit | 21st Mar 2013 | 700 | 900 | 10 | 7000 |
Withdrawal | 31st Mar 2013 | 100 | 800 | 1 | 800 |
31 Days | 22800 |
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