ING discount of 0.10%
well, I do that with my customers too, it would be important here that if you have 590 TEUR as the purchase price, you have to finance exactly 472 TEUR (80%) or more!
but with the 472 TEUR you would be at the low interest rate + another 0.10% interest discount.
As soon as you come below 80% in the financing/purchase price, ING is not allowed to give a discount here (because the margins are too low, I was told)
so if you do everything quickly now, then adjust the numbers more precisely, and make a short letter with the note: purchase price now 590 TEUR instead of 600 TEUR, and you want to finance exactly 80%!
As I said, with 590 TEUR and 465 TEUR financing you are at 78.81% according to ING calculation, and therefore out of the discount.