CARD ACTIVATION GUIDE

Card security.

Activation on demand.

Card Activation
  • Activation and de-activation of all credit cards, debit cards and ATM cards
  • Instant and 24/7 channels for activating and de-activating your card
New Card

All new, renewal and replacement Citibank Credit/Debit/ATM Cards sent via mail will be in a de-activated(blocked)
status. As part of this safeguard, any transactions attempted on a de-activated card will be declined.

Please refer below to find out how to activate/de-activate your Credit/Debit/ATM Card(s) via our various convenient channels available anytime, anywhere.

Channel Activate De-Activate

SMS

  • Please send the SMS from the mobile phone number registered in our records
  • Activation/De-activation of your card is immediate and you will receive a confirmation SMS from us
  • De-activation via this channel is only applicable for Credit Cards.

SMS ACT<space><Last four digits of your card number> to 72484.

If you are overseas, please SMS to +65 9657 2484 instead.

SMS DEACT<space><Last four digits of your card number> to 72484.

If you are overseas, please SMS to +65 9657 2484 instead.

Self Service Phone Banking

  • You will be requested to enter your Credit/Debit/ATM Card details, so please have it with you.
  • Activation of your Credit/Debit/ATM Cards is immediate and you will receive a confirmation SMS from us.
  • Deactivation for Credit/Debit/ATM Card is not applicable via Self Service Phone Banking.
  • Call Card Activation Hotline 6334 2484.
  • Enter your NRIC or card number.
  • Follow the voice instructions and enter the details requested
  • Key in your Telephone Pin or request for a One-Time PIN (OTP) via SMS for confirmation

Citi Mobile

  • Activation/De-activation of your card is immediate and you will receive a confirmation SMS from us.
  • De-activation via this channel is only applicable for Credit Cards.
  • Open "Citibank SG" mobile application
  • Login with your Username & Password
  • Go to menu → Manage your cards → Activate/Deactivate cards
  • Please enter the One-Time PIN (OTP) displayed on your Online Security Device (OSD) or request for a One-Time PIN (OTP) via SMS. Click "Continue" to proceed.
  • Select "USE IN SINGAPORE" tab
  • Select the respective cards(s) to activate/de-activate, then tap on "Activate/De-activate"
  • Tap on confirm to complete the process.

Citibank Online

  • If you access www.citibank.com.sg using your mobile, you will be automatically redirected to a mobile site.
  • Activation/De-activation of your card is immediate and you will receive a confirmation SMS from us.
  • De-activation via this channel is only applicable for Credit Cards

To activate/de-activate your cards online using your Internet Banking PIN:

  • Visit www.citibank.com.sg via computer/laptop/tablet
  • Click on "LOGIN TO", followed by "Citibank Online"
  • Enter:
    • User ID
    • Password
  • Under "Services" > "My Profile", click on "Card Activation" link and follow the steps on-screen.
Overseas Usage

For your security, all new, renewal and replacement Citibank Credit/Debit/ATM cards will be de-activated for overseas usage, unless:

  • You had specifically selected to activate the overseas usage feature on your account opening application form.
  • The card being renewed/ replaced was previously activated for overseas usage.

Remember to activate the overseas usage feature on your Credit/ATM/Debit Card(s) before traveling to enjoy your global privileges.

Please note that overseas usage de-activation for Credit Cards will only disable overseas ATM cash withdrawals and point-of-sale (POS) magnetic stripe transactions. POS EMV Chip transactions will not be disabled.

Please refer below to find out how to activate/de-activate your Credit/Debit/ATM Card(s) for overseas usage via our various convenient channels available anytime, anywhere.

Channel Activate De-Activate

SMS

  • Please send the SMS from the mobile phone number registered in our records
  • Activation/De-activation of your card is immediate and you will receive a confirmation SMS from us

For perpetual

SMS ACT<space>OS<space><Last four digits of your card number> to 72484.

If you are overseas, please SMS to +65 9657 2484 instead.

For time bound overseas use

SMS ACT<SPACE>OS<SPACE><Last four digits of your card number><SPACE><number of days>

If you are overseas, please SMS to +65 9657 2484 instead.

Time bound overseas activation will start from the day that the SMS is sent.

SMS DEACT<space>OS<space><Last four digits of your card number> to 72484.

If you are overseas, please SMS to +65 9657 2484 instead.

Self Service Phone Banking

  • You will be requested to enter your Credit/Debit/ATM Card details, so please have it with you.
  • Activation of your Credit/Debit/ATM Cards is immediate and you will receive a confirmation SMS from us
  • Call Card Activation Hotline 6334 2484.
  • Enter your NRIC or card number.
  • Follow the voice instructions and enter the details requested
  • Key in your Telephone Pin or request for a One-Time PIN (OTP) via SMS for confirmation

Citi Mobile

  • Activation/De-activation of your card is immediate and you will receive a confirmation SMS from us.
  • Open "Citibank SG" mobile application
  • Login with your Username & Password
  • Go to menu → Manage your cards → Activate/Deactivate cards
  • Please enter the One-Time PIN (OTP) displayed on your Online Security Device (OSD) or request for a One-Time PIN (OTP) via SMS. Click "Continue" to proceed.
  • Select "OVERSEAS USE" tab
  • Select the respective card to activate/de-activate
  • To activate perpetually, click on "Activate Perpetual” or click on "Schedule Activation" to enter specify date range for which to activate the card for overseas usage, then tap on “Schedule”, follow by "Confirm"
  • To deactivate, tap on “Deactivate”

Citibank Online

  • If you access www.citibank.com.sg using your mobile, you will be automatically redirected to a mobile site.
  • Activation/De-activation of your card is immediate and you will receive a confirmation SMS from us.

To activate/de-activate your cards online using your Internet Banking PIN:

  • Visit www.citibank.com.sg via computer/laptop/tablet.
  • Click on "LOGIN TO", followed by "Citibank Online"
  • Enter:
    • User ID
    • Password
  • Under "Services" > "My Profile", click on "Overseas Card Activation" link and follow the steps on-screen.
FAQs

Click here to view FAQs on Card Activation and De-activation.

Click here to view FAQs on Overseas Usage Activation.