Financial HP Calculator: Amortisation with Payments at begin of period

[Werner]

(06-06-2024 02:48 PM)Gil Wrote:  But for your "Gradual Payment Mortgage Amortisation equation", I presume that you calculate the initial PMT1 with full precision.

Yes

Quote: It's only for the amortisation schedule with effective payments, interests and balance that you round the intermediate result with 2 RND instruction. Right?

with RND(..: D), yes

Quote: And as I understood, you leave the user round the intermediate results with 3 or more digits?

? Don't know what you mean here.
Do you mean the gradually growing payments? No, I leave them at full precision and use the rounded value for interest and balance calculations, but I do not store the rounded value in the PMT variable.

W.