Reaching out to the interest/mathematic gurus. How much interest has been lost?

I asked in the ISA forum but i'll probably get a quicker response here. I don't suspect that it's going to be a lot, but in this case it's not the issue.

Bear in mind: This is an ISA.

Here's the situation:
K_P83 wrote: »
6th September 2011 // Statement Opening Balance // balance = £5,228.53
4th October 2011 // Withdrawal of £2,502.34 // balance = £2,726.19
Then came the transfer request the other week
22nd March 2012 // Interest (Gross) of £101.12 // balance = £2,827.31
22nd March 2012 // Closed Account

Now the rate was 3.2% ......... assuming the account was kept credited with £1+ for 12 months.

What should've happened is that 22nd March, instead of it being closed, it should've left £1.00 in the account.
This £1.00 would've stayed in the account until 7th September meaning...
3.2% on £5,228.53 from 6th Sept 2011 to 3rd Oct 2011.
3.2% on £2,726.19 from 4th Oct 2011 to 21st March 2012
3.2% on £1 from 22nd March 2012 to 6th Sept 2012.


Instead, due to a mistake by the bank, the entire amount has only received 3.00%. The 0.2% has been scratched.

As we know this mistake has generated an interest figure of £101.12 ... what would the interest have been on the above had the bank not made this mistake?


Also, if you have time could you show your working out too so i can see how you do it? Thanks.
«1

Comments

  • pvt
    pvt Posts: 1,433 Forumite
    It's about seven quid.

    Vent your anger by kicking the cat and then move on - it's hardly worth pursuing.

    Though the 1p interest on you £1 might make a difference....
    Optimists see a glass half full :)
    Pessimists see a glass half empty :(
    Engineers just see a glass twice the size it needed to be :D
  • pvt
    pvt Posts: 1,433 Forumite
    Oops - I can see from your other post that you're actually serious about this.

    It's £6.74 (1/15 X £101.12) plus the 1p for the £1 for six months = £6.75 in total.

    Hope Marmaduke managed to dodge you before I got the answer to you.
    Optimists see a glass half full :)
    Pessimists see a glass half empty :(
    Engineers just see a glass twice the size it needed to be :D
  • Ben8282
    Ben8282 Posts: 4,821 Forumite
    1,000 Posts Combo Breaker Newshound!
    edited 26 March 2012 at 11:42PM
    I'm sorry but I can't agree the figure of £101.12 for the interest actually paid. Your figure is way, way off for 3% pa.

    Could you please verify that all figures and dates stated are correct.

    I was trying to make an accurate calculation for you but the following rough calculation with over-estimated rounded figures is sufficient to show that the figure of £101.12 is simply not possible.

    The account was opened on 6/9/11 with a balance of £5228.53 which was reduced to £2726.19 after aprox 1 month and remained at that level for approx a further 6 months. Note that I have overstated the lengths of time.

    Now 3% of £5228.53 is £156.86. So if £5228.53 had been deposited for 1 year it would have earned £156.86, so for 1 month £156.86/12 = £13.05.

    3% of £2726.19 is £81.79. So if £2726.19 had been deposited for 1 year it would have earned £81.79, so for 6 months £81.79/6 = £40.92.

    Total interest payable therefore £13.05 + £40.92 = £53.97 not £101.12

    More accurate calculations produce similar, slightly lower, results.
  • Nine_Lives
    Nine_Lives Posts: 3,031 Forumite
    Of course I'm serious. The issue here isn't the amount. The difference could be 1p for all I care. The issue is that the banks have not acted properly. They've torn up the transfer sheet & decided themselves what will happen when the original request was perfectly fine.

    Why just lay down & let them do what they wish??!

    As for confirming the figures - yes they are all correct ... I re-typed them off the statement which came from Halifax via post yesterday.
  • Stompa
    Stompa Posts: 8,368 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    K_P83 wrote: »
    Why just lay down & let them do what they wish??!
    Probably best to keep quiet, they appear to have paid you a rate of around 6.2%!
    Stompa
  • Nine_Lives
    Nine_Lives Posts: 3,031 Forumite
    In th case something has gone seriously wrong, obviously.

    The date doesn't sound right to me - we generally open accounts around th
  • Nine_Lives
    Nine_Lives Posts: 3,031 Forumite
    In th case something has gone seriously wrong, obviously.

    The date doesn't sound right to me - we generally open accounts around thE same time as each other, with me being first as the sort of guinea pig ... And I opened mine in May 2011. I was sure hers was opened around the same time.
  • Ben8282
    Ben8282 Posts: 4,821 Forumite
    1,000 Posts Combo Breaker Newshound!
    K_P83 wrote: »
    In th case something has gone seriously wrong, obviously.

    The date doesn't sound right to me - we generally open accounts around thE same time as each other, with me being first as the sort of guinea pig ... And I opened mine in May 2011. I was sure hers was opened around the same time.

    I notice that your OP says

    '6th September 2011 // Statement Opening Balance' and not account opening balance.

    Looks as if the account was opened/money deposited prior to 6th September.

    If you give incomplete/misleading information you just waste the time of those who might have assisted you ....
  • thegoodman
    thegoodman Posts: 1,235 Forumite
    Part of the Furniture Combo Breaker
    The op hav a very very difficult life or making things up. A problem a day
    How many people you know have these many problems
    See other posts
    http://forums.moneysavingexpert.com/search.php?searchid=123590203
  • Nine_Lives
    Nine_Lives Posts: 3,031 Forumite
    Well now it seems that the issue has duplicated ... as my own ISA is no longer showing in my Halifax online banking account.
    Instead of it being for £2.7k in the case of my gf, it's now for £17.7k.
    Ben8282 wrote: »
    If you give incomplete/misleading information you just waste the time of those who might have assisted you ....
    Would you like me to scan the statement as sent out by Halifax so that i can SHOW YOU that this is the only information we have to go off? Due to it no longer showing in the online banking section.

    I can only give the information that i have at my hands, no more.
    thegoodman wrote: »
    The op hav a very very difficult life or making things up. A problem a day
    How many people you know have these many problems
    See other posts
    http://forums.moneysavingexpert.com/search.php?searchid=123590203
    Why the hell do you follow me around this message board? Don't like what i post? Sod off & don't read it or reply to it. Simple.

    I really don't understand your obsession with me.
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