What do I put in V55/5 box 45 revenue weight?
Reviewed 2026-07-10
Short answer
Use the revenue weight in kg from the Certificate of Conformity, IVA or GB conversion certificate where it applies to your vehicle.
Official position
The V355/5 guidance lists box 45 as revenue weight in kg and says to take this information from the Certificate of Conformity, or it may be on the IVA or GB conversion certificate.
What to do
Check whether revenue weight applies to your vehicle type and tax class.
Use the CoC, IVA or GB conversion certificate where the value is shown.
Do not use revenue weight interchangeably with mass in service or unladen weight.
If the value is not applicable, follow the V355/5 guidance for your vehicle category rather than guessing.
Common mistakes
- Putting mass in service into box 45.
- Completing goods-vehicle weight boxes for a normal passenger car without checking applicability.
- Using a plated weight from a different vehicle specification.
Related help
Official sources
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