Fixed Rate ? = fixed interest repayments

[dodo1]

I need clarification please
I have a fixed rate for 10 years with repayments at 479 per month for 73K
The interest repayments flucuates by 40 euro from month to month.... how can this be.
If anyone can help me out with a calculator on what the interest repayments with a 4.95 apr this would be appreciated.
D

 

[maryanne40]

I think the reason may be that interest is calculated on a daily basis and therefore repayments are not as much in 30 day months and of course in February.

 

[bacchus]

Calculator here