According to the EZ link website, there are 5 different cards that have ez-link card function as well. 4 of them are credit cards –
1. Citibank SMRT Platinum VISA
2. DBS Live! Fresh Platinum VISA
3. OCBC Debit VISA
4. POSB Everyday Mastercard
However, only 2 of the above (Citibank SMRT and POSB Everyday cards) offer rebate when you use the auto top-up function.
ANZ and HSBC Revolution also provide rebates when you link your credit cards to any ez-link cards for auto-up. HSBC may offer the highest rebate of 7%, but check out the T&C – you need to spend a minimum of $300/month and you get the 7% rebate only on your ez-link top-up and not on the rest of purchases. POSB Everyday card is probably the easiest amongst the lot.
Read the EZ Reload T&C here