EV charging payment costs: terminals, integration and processing
Understand the payment layer of an EV charging project before comparing terminal offers or charging-platform subscriptions.
The short answer
An EV payment budget can include contactless equipment, charging-platform integration, connectivity, acquiring, platform or session charges and support. Separate these from charge-point installation, electricity and wider site costs. Confirm the charging operator’s responsibilities and the rules applying to the site before treating a payment quote as complete.
In this guide
- Separate the charging site from the payment service
- Build a payment-specific cost schedule
- Check the public-charging requirements that affect the quote
- Worked example: four charge points and one payment terminal
- Test the payment and charging journey together
- Compare complete proposals on the same usage assumptions
Separate the charging site from the payment service
A project can involve a landowner, charge point operator, hardware installer, charging-management platform and payment provider. Establish who contracts with the driver, receives the takings, handles refunds and maintains the payment equipment.
Request a diagram of the commercial responsibilities as well as the equipment. If one company quotes a revenue share or a fee per charging session, ask what hardware, connectivity, maintenance and payment processing that amount already covers.
The payment budget is only part of the full charging-site business case. Keep grid connection, civil works, electrical infrastructure, charge-point hardware, energy, land costs and wider maintenance in a separate schedule.
Build a payment-specific cost schedule
| Cost | What to confirm |
|---|---|
| Contactless hardware | Per charger or shared terminal; mounting, enclosure, power, weather suitability and replacement. |
| Integration | Compatibility with the charging controller and management platform, configuration and acceptance testing. |
| Platform | Per site, charge point, connector, session, revenue share or a combination. |
| Connectivity | Terminal and charger data requirements, SIMs, router, coverage and backup arrangements. |
| Processing | Card categories, percentage rate, event fees, refunds, minimums and settlement. |
| Operations | Support hours, reconciliation, pre-authorisation handling, receipts and responsibility for failed sessions. |
A charger with two connectors is not necessarily billed as two terminals or two subscriptions. Ask for the exact charging unit. Confirm whether a shared terminal creates a single payment dependency across the site and what alternative remains available if it fails.
Check the public-charging requirements that affect the quote
GOV.UK guidance requires contactless bank-card payment for new public charge points of at least 8kW deployed after 24 November 2024 and all public charge points of at least 50kW, subject to the regulations’ scope and exceptions. A suitable nearby shared site terminal can be used. An app or QR code alone is not a substitute where contactless is required.
The guidance also covers price display, a free staffed 24/7 helpline, data and roaming. The 99% reliability requirement is measured across an operator’s rapid public network over the calendar year, not as a separate 99.99% payment-terminal promise.
Confirm the site’s status and responsible operator against the current official guidance. Allocate the cost and ownership of each applicable obligation in the project scope.
Worked example: four charge points and one payment terminal
Fictional payment arrangement, not a market quote. One shared terminal costs £950 and its integration costs £450: £1,400 upfront. Four charge-point platform subscriptions cost £8 each monthly. Payment software is £15, connectivity £8 and support £10, bringing fixed monthly fees to £65.
Assume 800 paid sessions at £12 each: £9,600 monthly card turnover. A fictional all-in tariff of 1.4% plus 5p per completed session costs £134.40 + £40 = £174.40 monthly. Assume each session creates one chargeable payment and no separately charged authorisation events.
The payment-layer total is £239.40 monthly and £4,272.80 in year one including setup. This excludes electricity, charger purchase and installation, site infrastructure, tax effects, additional compliance services and any unlisted session or roaming charges.
Check the real authorisation and capture sequence. A pre-authorisation, failed attempt or incremental authorisation may have a different charging basis from the final completed session. Do not simply equate every charging session with one billable event.
Test the payment and charging journey together
Demonstrate a normal session, a declined payment, a session that does not start, a partial charge and a refund. Confirm how the final amount is calculated and matched to the meter or charging record.
Ask how pre-authorisation holds are explained to drivers and when release is initiated. A temporary card hold is not the same as the final charging price. Check the provider’s process for unresolved holds and duplicate-payment concerns.
Include screen visibility, reach, access and an assistance route in the site specification. Establish responsibility for any accessibility adaptations, without assuming one hardware feature establishes full compliance for the site.
Compare complete proposals on the same usage assumptions
Use the same number of sites and devices, session count, average payment and card mix. Test lower utilisation as well as the expected case: fixed fees can be significant at a lightly used site.
Use the calculator for supported payment charges only when its inputs fit the actual tariff. Keep per-kWh charges, complex revenue shares, authorisation events and the wider infrastructure budget in a separate schedule where necessary.
Read the settlement guide, pre-authorisation guide and full TCO checklist before treating a low processing rate as the complete project price.
Common questions
Does every charger need its own payment terminal?
Not necessarily. The official guidance allows suitable shared site arrangements in defined circumstances. Confirm proximity, availability, accessibility and applicability for the site.
Can the payment calculator price the whole EV charging project?
No. It can support payment-fee comparisons where the tariff fits its inputs. Electricity, grid works, charge-point hardware and wider infrastructure need their own budget.
Are session fees the same as processing fees?
Not necessarily. A platform, operator or roaming service may charge separately. Ask which fees are included and what event or amount each charge uses.
Bring your costs into one clear comparison.
Use the free calculator for your payment fees and supported fixed costs. Keep the wider operating budget alongside it, or ask for a free initial review of an unclear charge or quotation.
No registration required to use the calculator.
Sources and how to use this guide
Primary references checked on 15 October 2026:
Worked examples are fictional planning scenarios, not provider quotations, market averages or customer results. They use the costs and assumptions stated, on a consistent VAT basis. Confirm current prices, eligibility and terms in writing.
Read the calculator method and limitations or about EPOS Savings. Source links do not imply a partnership or product endorsement.