EV Home Charging Cost Calculator

Cost per mile and per month for charging at home, at your state's current electricity rate, compared against a gas car at today's prices.

EV model

Your state

Miles/year

Gas car MPG

Gas $/gal

Cost per mile (EV)

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Cost per mile (gas)

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EV charging per month

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Annual saving vs gas

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How we calculate it

Charging cost = EPA efficiency (kWh per 100 miles) × your state's residential electricity rate × a 1.08 factor for charging losses. Home Level 2 charging wastes roughly 5–10% of energy as heat, which most calculators ignore.

The federal 30C home-charger tax credit expired June 30, 2026, and the 30D/25E vehicle credits ended September 30, 2025, so the running-cost gap against gas is now the main financial case for an EV. In cheap-electricity states that gap is still large; in the most expensive states it can nearly close.