Multi-user billing is the process of charging multiple individual users for their EV charging usage on a shared charging system. Each user is billed separately based on their own charging sessions, kWh consumption, and any applicable fees (session fees, time-based charges, idle fees), even when everyone uses the same site or charger group.
Unlike multi-tenant billing, which allocates costs to companies or lease entities, multi-user billing focuses on individual driver accounts.
Why multi-user billing matters
Multi-user billing is essential anywhere chargers are shared by many drivers:
– Ensures fair cost allocation when multiple people use the same charge points
– Enables pay-to-charge monetization for workplaces, residential communities, and public sites
– Reduces manual admin by automating invoices, receipts, and payment collection
– Supports usage rules (time limits, pricing tiers) that prevent charger monopolization
– Improves reporting for operators and site owners (revenue, utilization, demand patterns)
How multi-user billing works
A typical multi-user billing setup includes:
– User identification via RFID, mobile app account, QR code, or whitelist
– Session recording in the CPMS (start/stop times, kWh, connector ID, status events)
– Tariff application (€/kWh, €/min, fixed fee, dynamic pricing)
– Payment capture (stored card, mobile wallet, prepaid balance) or invoicing
– Receipt issuance and billing history per user
Common billing models
Multi-user billing can be implemented in different ways depending on site type:
– Pay-as-you-go: user pays per session based on tariff rules
– Monthly invoicing: consolidated invoice for all sessions in a billing period
– Prepaid wallet: users top up credit and sessions deduct from balance
– Subscription-based billing: membership plans with discounted rates or included credits
– Employer reimbursed: employees are billed but reimbursed through policy workflows
Requirements and best practices
To keep multi-user billing accurate and scalable:
– Use reliable identity methods (avoid shared RFID cards where possible)
– Ensure metering accuracy (sub-metering or MID metering where required)
– Display pricing transparently before session start and in receipts
– Implement exception handling (failed starts, partial sessions, refunds)
– Provide self-service tools (download invoices, update payment methods)
– Maintain audit logs and proper access controls for finance and support actions
Common challenges
– Shared credentials causing incorrect cost allocation
– Inconsistent session records between charger and CPMS leading to disputes
– Roaming sessions where user identity is controlled by an external eMSP
– Payment failures and chargebacks requiring clear dispute processes
– Tax/VAT rules differing by country and customer type (B2C vs B2B)
Related glossary terms
Multi-tenant billing
Invoice automation
Tariffs and pricing models
Mobile app payments
Mobile wallet payments
RFID authentication
Ad-hoc payment
CPMS
MID metering
Interoperability billing