EV Home Charging Reimbursement: US and UK Rules for 2026

EV home charging reimbursement works very differently in the US and the UK. The IRS publishes no per-kWh rate — American employers typically reimburse through the 72.5 cents-per-mile standard rate (2026) under an accountable plan. HMRC does publish one for company EVs: 7p per mile for home charging from 1 June 2026, revised quarterly.

That one-paragraph answer hides a lot of practical detail: who the rates apply to, what records each tax authority expects, and why knowing your actual home charging cost still pays off even where no official kWh rate exists. This guide covers both countries with 2026 numbers and worked examples — the substance first, then how VoltLogger automates the data layer underneath.

Is there an official EV home charging reimbursement rate?

It depends entirely on which side of the Atlantic you drive.

• United States: No. The IRS has never published a per-kWh or home-charging reimbursement rate. Anyone quoting an “IRS kWh rate” is making it up. Reimbursement for EV drivers runs through the same mileage-based mechanisms that apply to gasoline cars.
• United Kingdom: Yes — but only for company EVs. HMRC’s Advisory Electric Rate (AER) has been split by charging location since 1 September 2025 and, from 1 June 2026, stands at 7p per mile for home charging and 15p per mile for public charging. Crucially, these rates are revised quarterly. Drivers of personal EVs don’t use the AER at all — they use AMAP mileage rates instead.

The rest of this guide walks through each system, because getting them mixed up is the most common (and most expensive) mistake in this space.

How does EV home charging reimbursement work in the US?

Answer first: there is no charging-specific reimbursement. The clean, defensible route is an accountable plan in which your employer reimburses business driving at or below the IRS standard mileage rate. Reimbursement at that level is deemed substantiated — no receipts for electricity needed — because the standard rate is designed to cover all operating costs, including the power you draw at home.

For 2026, the IRS set the business standard mileage rate at 72.5 cents per mile, up from 70 cents in 2025 and effective January 1, 2026. The IRS states explicitly that the rate applies to electric and hybrid vehicles as well as gasoline and diesel ones (IRS newsroom announcement).

Worked example (2026): You drive 1,000 substantiated business miles in your Tesla in a quarter. Your employer reimburses 1,000 × $0.725 = $725, tax-free under an accountable plan. Whether those miles were charged at home for 4 cents a mile or on a Supercharger for 12, the reimbursement is the same — the rate absorbs the difference.

What records does the IRS require?

The reimbursement mechanism is simple; the substantiation is where people fail. Per IRS Publication 463, for every business trip you need:

• Mileage (odometer-based)
• Date
• Destination
• Business purpose

And the records must be timely-kept — recorded at or near the time of the trip. A spreadsheet reconstructed from memory in March does not meet the standard.

Standard mileage vs. actual expenses

If you’re self-employed, you can instead deduct actual expenses — electricity, insurance, depreciation, repairs — in proportion to business use. Two caveats worth knowing (see IRS Tax Topic 510):

• You must choose the standard mileage rate in the car’s first year of business use to keep that option in later years; it’s also unavailable if you operate five or more vehicles simultaneously or have taken MACRS/Section 179 depreciation.
• For a leased car, whichever method you pick applies for the entire lease.

The actual-expense method is exactly where home charging data becomes money: you can only deduct electricity you can substantiate. Which brings us to why measuring your home sessions matters even without an IRS kWh rate.

This is not tax advice — confirm your specific situation with a tax professional.

How does home charging reimbursement work in the UK?

Answer first: for company EVs, use HMRC’s Advisory Electric Rate, which since 1 September 2025 is split by where you charge. From 1 June 2026 the rates are 7p per mile for home charging and 15p per mile for public charging, with mixed journeys “apportioned on a fair and reasonable basis” (HMRC advisory fuel rates). The rates are revised quarterly — never hard-code them into a policy without a review date.

Worked example (from 1 June 2026): You drive a company Tesla 900 business miles in a month. 700 of those miles ran on home charging, 200 on public chargers. Your employer can reimburse (700 × £0.07) + (200 × £0.15) = £49 + £30 = £79 tax-free — if you can show which miles were charged where. That evidentiary split is new work the old single-rate world never demanded.

For personal EVs used for business journeys, the AER is irrelevant. You claim Approved Mileage Allowance Payments (AMAP): 55p per mile for the first 10,000 business miles from 6 April 2026 (up from 45p), and 25p per mile above that (gov.uk mileage rules). AMAP covers everything — electricity included — so there’s no separate charging claim.

What records does HMRC expect?

Per HMRC’s guidance on vehicles used for work, keep for every business journey:

• The date
• The mileage
• The reason for the journey
• Start and end postcodes

And if your employer reimburses you anything, deduct it from what you claim. With the split AER, company-EV drivers effectively need one more dimension: which charging location powered which miles.

This is not tax advice — rates and rules change; verify against gov.uk before claiming.

US vs UK: how the two approaches compare

Why does my actual home charging cost still matter?

Even in the US, where no official charging rate exists, knowing your real cost per home-charged mile is worth money in three concrete ways:

1. Cost-per-mile insight. Suppose you pay $0.15/kWh at home and your Tesla consumes about 0.27 kWh per mile including charging losses: roughly 4 cents per mile. Against a 72.5-cent reimbursement rate, that tells you exactly what the standard rate is really compensating — and whether the actual-expense method might beat it for your usage pattern.
2. Employer charging policies. More US employers are writing EV policies that reimburse actual home charging cost for company vehicles. Every such policy stands or falls on measured kWh per session at a documented tariff. No measurement, no defensible policy.
3. The actual-expense method. If you deduct actual costs, the electricity share of your bill attributable to the car must be substantiated. A per-session kWh log priced at your real tariff is precisely that substantiation.

In the UK the same logic applies in reverse: if your off-peak EV tariff costs you 8p/kWh, your real home cost is around 2p per mile — the 7p AER over-compensates you. On a standard tariff at 27p/kWh you’re near 7.3p per mile and the AER slightly under-pays. Employers can pay actual cost instead of the advisory rate if they can evidence it; either way, the argument starts with measured sessions, not estimates.

How does VoltLogger do this automatically?

Everything above reduces to one requirement both tax systems share: complete, contemporaneous data — miles per trip, kWh per session, and where each happened. VoltLogger is a PWA companion for Tesla drivers that captures exactly that data layer, hands-free:

• Connects once, no hardware. VoltLogger uses the official Tesla Fleet API via OAuth — no OBD dongle, no password stored, revocable anytime in your Tesla account.
• Every trip, logged as it happens. Odometer start/end come from the car itself, so your totals always reconcile with the real odometer — the “timely-kept” standard by construction. Start and destination addresses, route indication, and one-tap business/commute/private classification (or automatic from→to rules) cover the date/destination/purpose fields both the IRS and HMRC ask for. Gap recovery means a missed poll can never lose miles: the odometer delta reconstructs the trip and the year stays complete.
• Every charging session, measured and priced. kWh per session from the car’s own meter, classified home/work/public/DC via geofences, priced against your actual electricity tariff with provisional→final true-up and an adjustable charging-loss factor. That is the home-vs-public split the UK AER now demands, and the substantiated electricity cost the US actual-expense method needs.
• Audit-ready reports. Month, quarter and year summaries with CSV and PDF export; locked or exported rows are never silently recalculated afterwards.

To be precise about what the app does and doesn’t do: VoltLogger gives you the complete, timestamped record — it does not make anything automatically “IRS-approved” or “HMRC-approved”. The compliance obligation stays with you; the app removes the manual bookkeeping that makes people fail it.

If you’re building the mileage side of your records, start with our Tesla mileage log guide; UK company-car drivers should also read the HMRC mileage claim guide for Tesla drivers.

What does VoltLogger cost?

EUR 5/month or EUR 29/year. Free to try, no credit card required, cancel anytime. Hosting is EU-based (Cloudflare) and GDPR-compliant. Compared with reconstructing a year of trips and charging sessions by hand — or losing a claim because the records weren’t contemporaneous — it’s the cheapest line item in your car budget. See the full feature overview on the automatic Tesla mileage and charging log homepage.

The bottom line

There is no US “EV home charging reimbursement rate” and there never has been — the accountable-plan route at 72.5 cents per mile (2026) is the safe mechanism, with actual expenses as the data-hungry alternative. The UK does have one, but only for company EVs: 7p per mile at home and 15p in public from 1 June 2026, revised every quarter, with per-journey evidence of where you charged. Under both regimes, the driver with a complete, contemporaneous log of miles and kWh wins; the driver with estimates loses. VoltLogger’s job is to make sure you’re the first kind.

This is not tax advice. Rates and rules cited here are current as of July 2026 — always verify against irs.gov and gov.uk before filing or claiming.