Putting some numbers if somebody wants to pay rent through Amex plat travel (Only rent payments on this card)
Say monthly rent 35,000
Annual spend on rent 4,20,000
Spend 4,20,000 on Amex plat travel (Pay rent through mobikwik wallet with 2.95% additional charge)
Total money spend
Rent = 420000 + (42000*2.95/100) = 4,32,390 (12,390 additional payment)
Annual card fee = 5900
Total additional payment = 12,390 + 5900 = 18,290
Rewards earned
Completing 4 lacs milestone = 40000 MR (Membership rewards)
Regular reward points = 8400 MR
Total = 48,400 MR + 10k Taj voucher
With 18,290 additional payment, one will get 48400 MR rewards, i.e. ~30,000 MR & 10k Taj Voucher
Considering 1MR=Rs1 & 10k Taj voucher, it is approximately 9.5% return
Bonus (Not included in above calculation)
1. Annual fee for first year is 4130
2. Welcome bonus (applicable for only for first year) 10000 MR
3. Bonus offers while transferring MR to Marriot etc
Caveats
1. Not good to individuals who don't like travel rewards (12,390 additional payment would be loss)
2. Good returns only upto 35k rent per month (OR Upto 4 lacs annually)
3. This card will be exclusive for rent payments (Additional card can be availed through family members)