1. charging an additional fee or cost on top of the regular price
Usage: present participle of surcharge
2. overloading or putting excessive burden on something
Usage: present participle of surcharge; technical

Examples

• The airline is surcharging passengers for extra baggage.
• Banks are surcharging customers for using out-of-network ATMs.
• The restaurant is surcharging a service fee for large groups.
• The electrical system was surcharging due to too many devices.
• Credit card companies are surcharging merchants higher processing fees.
• The delivery service is surcharging for weekend deliveries.