How it works

OPUS en ligne allows you to load your OPUS card with transit fares using a card reader plugged into your computer.

The service is available at all time, 24 hours a day, 7 days a week.

To use this service, you need:

  • a computer (see Technical assistance)
  • an OPUS card reader
  • an OPUS card
  • a valid email address
  • a Visa or Mastercard credit card with a Quebec billing address

Buy your OPUS card reader  online for $19.60 (plus applicable taxes).

To get started, plug the card reader into your computer. Insert your OPUS card into the reader and click Initiate fare reload on the home page.

Operating instructions

Plugging in card reader

1. Plug the cable into your card reader.

2. Plug the cable into the USB port of your computer. The card reader can stay plugged in.

Purchasing fares or reviewing card content

3. Insert your OPUS card into the reader, chip first, facing up.

4. From the home page, click on Initiate fare reload. 

Note: You are now on the Société de transport de Montréal transaction site. If you want to purchase fares from other transit service providers, go to and click on Initiate fare reload.  

5.  If this is your first visit, click on the banner to download the SmartCardPlugin,

For complete details, refer to technical support

If you have already downloaded the SmartCardPlugin, your computer will ask you to run the plugin each time. This is normal; the plugin must run in order to use the card reader. 

Tip: You can choose to skip this alert by ticking or unticking the box when prompted by most web browsers.             

6. Follow the on-screen instructions to select one or more transit fares for reload. 

Fare payment   

7. Pay for your fares by entering a credit card number. Payment can only be made with a Visa or Mastercard credit card with a Quebec billing address.     

8. Caution! Wait until transaction has been completed (confirmation of payment and writing on OPUS card) before removing card from reader.     

9. If you want to reload fares on more than one OPUS card, click on Insert another card and repeat purchase process with each one.    

Once you have finished reloading fares on your OPUS card, it is ready for use in your transit system.     

If you are experiencing difficulties, please get in touch with your transit service provider. For contact information, go to