Fixed rate cash ISA "predicted balance on maturity" question.

Rusty190

I have a fixed rate cash ISA with Virgin money which is about to mature (in 1 week).
On logging in to my account today, I can see that they have a sum listed as the predicted balance on maturity which is roughly £150 short of my expected balance.
Is this a common thing and one of those easily explained issues to those who know or should I be challenging this as a matter of urgency?

refluxer

I've had lots of different fixed rate ISAs over the years (none with Virgin though) and have never seen a predicted balance before with any of them. 

How was the ISA funded ? If it was via cash deposits over a period of time, then that might account for getting less interest than you were expecting.

JGB1955

Will ALL of the funds been in the account for the WHOLE of the fixed term?  Perhaps less (by a few days) than 1/2/3/ years?

Rusty190

Thank you both.
Have gone back to look at original funding of this ISA and approx. 25% of funds were used to open the account with the remaining 75% deposited some 26 days later.
The maths involved in deciphering this are far too complicated for me but I'm happy now that it's probably right.

refluxer

Rusty190 said:

Thank you both.
Have gone back to look at original funding of this ISA and approx. 25% of funds were used to open the account with the remaining 75% deposited some 26 days later.
The maths involved in deciphering this are far too complicated for me but I'm happy now that it's probably right.

I'm not saying that banks never make mistakes but it's highly likely that losing almost a month's-worth of interest on 75% of your balance will almost certainly explain the difference you're seeing.