Which EV Charging Card Actually Saves You More?
Picking the right EV charging card means looking at both the discount rate and the annual fee, not just the headline discount. A high discount with a pricey fee can end up costing more if you don't charge often. This calculator compares two cards based on your monthly charging usage and rate, showing which one delivers more net annual savings.
How the calculation works
Monthly charging cost is your monthly usage times the base rate. Multiplying that by each card's discount rate gives the monthly discount, and multiplying by 12 gives the annual discount total. Subtracting the annual fee gives net annual savings — the card with the higher number is the better deal.
Things to consider when choosing
Heavier chargers tend to benefit more from a higher discount rate, while light chargers often do better with a low or no annual fee card. If your usage varies month to month, run the numbers using your average monthly charging amount.
Frequently Asked Questions
Not necessarily. A higher discount with a pricier fee can cost more if you charge infrequently. Compare net savings instead.
Multiply monthly discount by 12, then subtract the annual fee. The card with higher net savings is the better deal.
A card with a lower or no annual fee often wins over one with a higher discount rate for light chargers.