It's one type on investment just like NPS or any other investment. You should have documents that you invested under your name. Now bank can consider this as business expense but as per my understanding it shouldn't be considered as business expense as it's one type of investment.
Adding my few points - I have been investing in Invoice discount more than a year now. There is a risk involved to this type of investment and if you are ok to take risk then you can do so. Ideally bank should not block your card for doing so as it's one type of investment(just like NPS). May be...
Snapay allows transfer at ~1%
I am not saying Snapay is good but transfer rates are low so people use it. I too use it occasionally but not like this (50k per month).
...can't be divided then this way doesn't work as Amazon has limitation of only keeping 1 lakh at a time. For buying Amazon gift card, this can be done in many ways - buy through gyftr portal(20k * how many add-on card you have), Amex multiplier(25k), buying directly from Amazon site, intermiles...
Had one query. Suppose user has already spent 1.5 lakh in a month and post that uses gyftr voucher(2x or 3x). Will they receive 70(2x)/105(3x) ER per Rs. 200 spend on gyftr portal?