When you register your card at myhopcard.com or on the Hop app, you can set up Auto-Load, which puts money on your Hop card automatically whenever your balance dips below $5. That way you’re never stuck without fare.
To set up Auto-Load: Log in to your account, select your Hop card, then select the “Auto-Load” option on your account dashboard. You can choose an amount to load, between $20 and $245. This amount will be purchased on your payment card whenever your Hop card balance reaches or dips below $5.