Overdraft Interest Calculation

BigPineapple

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Hi all,

I have a general question just trying to wrap my head around overdraft calculations.

If I have an overdraft facility of €10K which I'm using say €9K (to leave a bit for interest accrued etc).
Interest rate is 10% and the interest is calculated daily (See 8.1) based on a 360 days year (See 8.4) but charged at quarterly (See 8.2).

I'm a bit confused as to how the actual calculation of the interest work.

I took KBC's terms as example, excerpt below in quote:


Lets say for ease of starting point, the overdraft was taken on the 1st of January.

1st Jan / Balance = €9,000 / Interest is €2.5 [*Derived from ((9000*0.1)/360)]
2nd Jan / Balance = €9,000 / Interest is €2.5
.
.
15th Jan / Balance = €9,000 - €4,500 (Lodgement) = €4,500 / Interest is €1.25
.
.
31st Jan / Balance = €4,500 / Interest is €1.25


The way I have worked the interest out is that the interest accrued from the first day's balance and the interest doesn't get added to the balance for the purpose of calculating the next day's interest. (i.e. Interest is calculated daily, set aside and only added together once every quarter).

Is this the right way of calculating it? or should I add the daily interest to the balance at the end of each day for the purpose of calculating interest for the next day and so forth. This part is not particularly clear.

Hoping someone can help clarify
 
Yes. I thought it was the other way, but someone corrected me here.

The interest is not charged on the interest until it is posted to the account.

Brendan

Thanks Brendan for clarifying.

That would make calculation much easier and overall interest slightly less which is a good thing
 
It is the cleared balance - so not necessarily the balance shown on the statement/online