UK Vehicle Excise Duty (road tax) for cars registered from April 2017 is a flat standard rate of £195/year after the first year, regardless of engine size, though the first-year rate scales by CO2 emissions from £10 up to £5,490 for the highest emitters, and cars over £40,000 pay a supplement for 5 years. In the US, most states charge registration fees rather than a true 'road tax', often based on vehicle weight or value, typically $50-$250/year, while a few states (like some with personal property tax on vehicles) can charge substantially more.
At a glance
| Region | Basis for road tax/registration fee | Typical annual range |
|---|---|---|
| UK (VED, post-2017 registration) | CO2 emissions (year 1), flat rate after | £0-£5,490 (year 1); £195 (standard, after) |
| US (varies hugely by state) | Flat fee, weight, or vehicle value | $50-$250+ typical; more in some states |
| India (varies by state) | Vehicle price, engine size, seating capacity | One-time at registration, often 7-20% of ex-showroom price |
Why 'road tax' means different things in different countries
The UK's Vehicle Excise Duty is a genuinely annual, government-mandated tax tied to emissions and, for the newest cars, an ongoing obligation for the life of the vehicle. The US has no federal road tax at all — what Americans often call 'car tax' is really a state-level annual registration fee (and in some states, a separate personal property tax), with wildly different structures state to state. India charges what's officially a one-time road tax at registration in most states, calculated as a percentage of the vehicle's ex-showroom price, though a few states have moved to periodic renewal models for certain vehicle categories.
UK: how VED is actually calculated
For cars first registered from 1 April 2017 onward, year-one VED is banded by CO2 emissions — from £0 for zero-emission vehicles up to £5,490 for the highest-emitting band. From the second year, most petrol and diesel cars pay a flat standard rate (£195 as of recent rates), with an additional 'expensive car supplement' (roughly £425/year) for five years on any vehicle with a list price over £40,000 when new, electric vehicles included as of recent policy changes phasing out their previous VED exemption.
| CO2 emissions (g/km) | Approx. UK year-1 VED |
|---|---|
| 0 (zero emission) | £10 |
| 1-50 | £10-£130 |
| 76-90 | £270 |
| 151-170 | £1,360 |
| Over 255 | £5,490 |
US: registration fees, not a national road tax
Because there's no federal system, a road tax/registration calculator for the US genuinely needs a state (and sometimes county) selector. Some states charge a simple flat annual registration fee (often $50-$150). Others calculate it on vehicle weight (heavier vehicles pay more, common for trucks). A smaller number of states — often called 'personal property tax' states — assess an ongoing tax based on the vehicle's assessed value, which can run into several hundred dollars a year for a newer vehicle and decreases as the car depreciates.
India: road tax as a one-time registration cost
Most Indian states levy road tax as a one-time payment at registration, calculated as a percentage of the ex-showroom price (commonly in the 7-20% range, varying by state, fuel type and vehicle segment), with electric vehicles frequently given a reduced rate or exemption as a policy incentive. A few states additionally charge periodic renewal fees for commercial vehicles or vehicles beyond a certain age. Interstate vehicle transfers can also trigger a fresh road tax liability in the new state, which is a common surprise for owners relocating.
What a good calculator needs as inputs
- Country and, for the US and India, state/province — since national averages are close to meaningless for actual billing.
- Registration date (UK VED rules changed significantly in 2017 and again with subsequent EV policy changes, so pre/post cutoff matters).
- CO2 emissions figure (UK) or engine size/vehicle value (India, many US states).
- Vehicle price at purchase (relevant for India's ad valorem tax and the UK's expensive-car supplement).
EV road tax exemptions are being phased out or reduced in several regions as EV adoption grows and governments look to replace lost fuel-tax revenue — a calculator or policy page more than a year or two old may state an EV exemption that no longer fully applies. Always confirm current-year rules for EVs specifically.
Frequently asked questions
Do electric vehicles pay road tax?
Why did my UK road tax jump after the first year?
Is US car registration the same as road tax?
How is road tax calculated on a used car in India?
Can I get a road tax refund if I sell my car?
Sources & further reading
- GOV.UK – Vehicle Tax Rates
- Parivahan Sewa (India) – Road Tax Information
- USA.gov – Vehicle Registration by State
Figures, prices and policy details were current at the last-updated date above. Automotive pricing, incentives and regulations change frequently — verify time-sensitive details with the linked primary sources. Read our editorial policy and fact-checking standards.
