Brendan, I am looking at the 3rd post above, i.e. borrowing 100,000 and being charged 3% a year, instead of 1% a year for five years.
Your summation is as follows.
The calculations are correct but it seems an overcomplicated way of looking at it.
The way I see it is as follows :
From your first set of calculations (3% per year), the total repayment for each year (Principal +Interest) is €6,655.20.
So, for 5 years, the total repaid is €33,276.
From your 2nd set of calculations (1% per year), the total repayment for each year (Principal +Interest) is €5,518.68.
So, for 5 years, the total repaid is €27,593.40. This is what should have been repaid.
So, the overpayment is (€33,276 - €27,593.40 i.e. €5,682.60).
So, the bank should refund you this overpayment of €5,682.60, and set the outstanding amount to what it should have been if you had been on the 1% rate i.e. €78,841.86.
Is this too simplistic ? Maybe there is a reason to do it as you have shown and I am missing it.
Your summation is as follows.
Now the borrower owes €76,841.86 which he would now owe had he been charged the correct level of interest and has cash of €5,682.18
The calculations are correct but it seems an overcomplicated way of looking at it.
The way I see it is as follows :
From your first set of calculations (3% per year), the total repayment for each year (Principal +Interest) is €6,655.20.
So, for 5 years, the total repaid is €33,276.
From your 2nd set of calculations (1% per year), the total repayment for each year (Principal +Interest) is €5,518.68.
So, for 5 years, the total repaid is €27,593.40. This is what should have been repaid.
So, the overpayment is (€33,276 - €27,593.40 i.e. €5,682.60).
So, the bank should refund you this overpayment of €5,682.60, and set the outstanding amount to what it should have been if you had been on the 1% rate i.e. €78,841.86.
Is this too simplistic ? Maybe there is a reason to do it as you have shown and I am missing it.