(17B/19B) GPM: initial payment

[Gil]

Understood.

I thought wrongly that, in graduated approach,
during first year payments Pi (P1, P2... P12) = fix amount =P
during the 2nd year P13, P14... P24=fix amount = P. 1.075
etc
But, as I deduce from your explanations, it's not the case.

I have no experience on the matter, but I am surprised that the sum to be paid back should increase regularly by 7.5% during 59 (or 60) months (very complicated for the client to see the amount change every months).

Regards