You have physical card, so 20K is good for you. Phsyical card don't have bonus point like VDC. As, per txn has 1000 maximum points by SBI, a 20K txn will give you 200 = 1XNormal Pts and 4X accelerated under campaign which is 800. Total= 1000. And you will get 200 bday bonus also. So a 20k txn will fetch you 1200 pts. Abhi tak yeh nahi pata chala hai ki Normal + Accelerated ki total limit hai 1000 per txn ya fir koi 25K karega toh usko 250 + (250x4) bhi mil saktey hai. Under this campaign I have done every kind of txn like 25K, 20K and 16600 to know the mystery and finally clarify things out.
Some people here are confused because VDC gives Normal + Bonus and currently we have no idea whether campaign accelerated points of 4X multiplier will be done for normal only or bonus also. I am of view that only Normal ones will get multiplier effect of 4X while not the VDC bonus so doing 16600 but some people like
@6ix9ine bro are doing 10K txn thinking 10k will give 100 Normal 1X + 100 VDC Bonus and both of these will be made 4X by Nov 30. So total 100+400+100+400 = 1000 as per his view. To be on safe side he is doing 10K only with VDC for max. benefit.
Only by Oct 31st or before, we will come to know about this as VDC Bonus points were not available in August and it restarted only in Sep month and campaign points for Sep month are yet to be credited. So we will have cleear idea. But thing is you can't get more than 10000 points in a month. There is another confusion here whether Normal 10K points per month limit and this accelerated have the combined limit or there is another 10K pts limit for it.
Now the thing which made me sure that VDC Bonus will not have multplier effect and only normal ones is because in August I did a 20K txn and got 200 Normal + 200 VDC Bonus (although VDC bonus was not there yet for 3 txns I received bonus) and later 200 for Rakshabandhan campaign. One txn was of Rs.15000 so 150 Normal + 150 VDC bonus were credited in August and then in October, another 150 of Rakshabandhan campaign credited which made me sure that only Normal 1X will have multiplier effect.