This was raised in the calculator thread.
If you had a mortgage of €100k when you came off the fixed rate, and you are still an AIB customer, your mortgage today will be written down by €12k and you will get the interest on the €12k from the date your fixed rate ended up until today.
But what happens if you switched from AIB 3 years ago to Bank of Ireland?
It was easy enough in the cases where the bank acknowledged that the borrower should have been given a tracker at 1%. Clearly, they would not have switched to a more expensive lender and so AIB would have paid the difference between the interest actually paid and the interest which would have been charged at 1%.
But the Ombudsman award makes it a bit more difficult.
We won't know until AIB announces their redress programme.
They should pay the interest at the BoI rate on the €12,000 up to date and if they don't, I would expect the Ombudsman to uphold a complaint on the issue.
Brendan