From 1 July 2020 onwards, OCBC will revise the rebates given for the Transport category of OCBC YES! Debit Card and OCBC FRANK Debit Card.
You will continue to earn a 1% rebate when you charge the fares of Comfort and CitiCab, Grab, Go-Jek and TADA rides to your debit card. However, other transactions made with these merchants will not earn the rebate. For example, if you use your debit card to top up your GrabPay Wallet, you will not earn the rebate.https://www.ocbc.com/personal-banking/notices.page#tnc-debitcards-update
You will still need to charge S$400 in Visa transactions in a month in order to qualify for the 1% rebate.