Vehicle Tax from VRM
Easily identify the annual vehicle tax (road tax) for any used car, van or motorcycles from its registration plate. Includes initial 12 months rate for any vehicle less than 1 year old, and the additional rate for premium vehicles with a list price in excess of £40,000.
Key Features
VRM Lookup
Quickly and easily identify the annual vehicle tax rate from a registration plate.
Vehicle Age
Covers all vehicle tax regimes by registration date, from tax exempt classic vehicles over 40 years old to vehicles registered after 1 April 2025.
Vehicle Type
Provides coverage for cars, vans, motorcycles, motorhomes and private goods vehicles.
Initial Year Tax
Included for cars registered in the last 12 months, including the changes applicable from 1 April 2025.
DVLA CO2 Value
Includes the CO2 value used by the DVLA for calculating vehicle tax.
Technical Data
Also includes engine capacity, revenue weight and type approval of the vehicle (as applicable).
Sample Response
V2
Documentation
Introduction
This endpoint provides the annual vehicle tax rate based on registration date, vehicle type, fuel type, CO2 value and list price.
Header
When making calls to our API, include the following header:
x-api-key:your-api-key-here
Example Request
https://api.oneautoapi.com/oneauto/vehicletaxfromvrm?vehicle_registration_mark=AB21ABC&list_price_inc_options_delivery_vat=12345.67
Example Sandbox Request
https://sandbox.oneautoapi.com/oneauto/vehicletaxfromvrm?vehicle_registration_mark=AB21ABC&list_price_inc_options_delivery_vat=12345.67
Request Parameters
vehicle_registration_mark
mandatory, string, e.g. AB21ABC
Vehicle registration number (VRM).
list_price_inc_options_delivery_vat
optional, string, e.g. 12345.67
List price + options + delivery price including VAT.
Sample Response
{
"success": true,
"result": {
"registration_month": "2026-03",
"co2_gkm": 123,
"type_approval_category": "M1",
"vehicle_type": "car",
"engine_capacity_cc": 1499,
"dvla_revenue_weight_kg": 1234,
"fuel_type_desc": "Petrol",
"12_month_rfl_y1": 200,
"12_month_rfl": 405,
"12_month_rfl_premium": 640,
"is_premium": false
},
"error": "If there is an error the message would go here"
}Response Parameters
success
e.g. true
Whether the api call was successful
registration_month
e.g. 2026-03
Registration month.
co2_gkm
e.g. 123
CO2 in g/km
type_approval_category
e.g. M1
Type approval category code assigned to this type of vehicle.
vehicle_type
e.g. car
Class of vehicle.
engine_capacity_cc
e.g. 1499
Cubic capacity of the engine.
dvla_revenue_weight_kg
e.g. 1234
The weight of the vehicle for DVLA purposes.
fuel_type_desc
e.g. Petrol
The vehicle's fuel type description
12_month_rfl_y1
e.g. 200
Year One 12 month Road Fund Licence.
12_month_rfl
e.g. 405
12 month Road Fund Licence year two onwards
12_month_rfl_premium
e.g. 640
12 month Road Fund Licence year two onwards for vehicles over 40k
is_premium
e.g. false
Is the vehicle over £40k and classed as premium for annual vehicle tax purposes.
error
e.g. If there is an error the message would go here
Details of what went wrong with the api call
Status Codes
200
success, chargeable
Request has been successfully received and a response has been sent.
202
accepted, non-chargeable
Request has been received and accepted for processing, but the action has not yet been completed.
204
no content, non-chargeable
Request has been successfully received but there is no content to return e.g. if an invalid VRM has been sent.
206
partial content, non-chargeable
Request has been successfully received but limited content is returned e.g. if an invalid VRM has been sent.
400
bad request, non-chargeable
Request was not received e.g. if any required parameters are missing.
403
forbidden, non-chargeable
Request was rejected e.g. if the API key is invalid or the service is not enabled.
429
too many requests, non-chargeable
API key rate limit/quota has been exceeded.
500
internal server error, non-chargeable
We are unable to process the request e.g. if the API is under extremely heavy load.
503
service unavailable, non-chargeable
Service is temporarily unavailable. Contact help@oneautoapi.com