Payload is the maximum weight a van may legally carry: its maximum authorised mass (MAM) minus its kerbweight. It includes the driver, any passengers, fuel, tools, racking and everything in the load area. A van that is perfectly legal empty can be illegal loaded, and the payload figure in the brochure rarely survives a real fit-out.
What payload actually is
Two numbers define it. MAM is the maximum the vehicle is permitted to weigh with everything and everyone on board — a legal ceiling set by the manufacturer, not a suggestion. Kerbweight is what the van weighs as it stands, ready to drive. Payload is the gap between them.
That gap is the only weight you own. Everything you add comes out of it, and nothing puts anything back.
There is a second layer most buyers miss: individual axle limits. A van can be under its overall MAM and still be over on the rear axle if the load sits by the back doors. The manufacturer’s plate lists both the gross figure and the axle figures.
The quoted payload is for a van nobody buys
Manufacturer payload figures are usually calculated for a base specification vehicle, often with a nominal driver allowance and sometimes a near-empty tank. Real vans are not base specification. A working van typically gains:
- Ply lining, racking and a load-area floor
- A tow bar and electrics
- A second row of seats and a bulkhead in a crew van
- Roof bars, a ladder rack or a pipe carrier
- A beacon, a tail lift, a rear step, a tracker
- A full tank of fuel, plus AdBlue
- Air conditioning, heavier trim, larger wheels, a spare
Individually these are trivial. Together they can consume a serious share of a smaller van’s payload before a single tool goes in. Crew vans and tipper conversions catch people out most often, because the thing that makes them useful is also heavy.
Ask for the payload of the actual vehicle in the actual specification, in writing. A converter should be able to supply a weight for the conversion. If nobody will commit to a figure, treat that as information in itself.
You count, and so does your mate
The driver is part of the load. So is the passenger, the apprentice in the middle seat, the coats, the flask, the two bags of cement nobody remembers putting in and the wet sand still in the wheel arches from Thursday. On a three-up crew van the people alone account for a meaningful slice of what is left. If you carry a colleague every day, budget for them from the outset rather than discovering the problem on a job.
Overloading is an offence, and your insurer may take an interest
Overloading is a road traffic offence. DVSA can weigh a van at the roadside, and enforcement can include a prohibition preventing you from continuing until the load is reduced — in practice an unplanned stop, a second vehicle and a lost day. Check GOV.UK for enforcement powers and how offences are dealt with, and do not quote penalty amounts or points without checking.
The commercial risk is often larger. An overloaded van is operating outside its design limits, so brakes, tyres, suspension and steering all work harder than intended. If there is an incident, an insurer may look closely at whether the vehicle was being used lawfully, and cover can be affected. Your maintenance costs rise long before anyone else notices.
Weigh your load, do not estimate it
Guesswork is where this goes wrong. Two practical methods.
Use a public weighbridge. Load the van exactly as you would on a busy day, with you in it and a normal amount of fuel. Many waste transfer stations, agricultural merchants and builders’ merchants have a certified weighbridge and will weigh a vehicle for a small charge. Compare the ticket with the plated MAM, and get an axle weight if you can.
Build it up on paper. Weigh or look up your heaviest recurring items — a full generator, a pallet of tiles, a bulk bag, a day’s stock, a set of steps — and add them up before you commit. A bathroom scale gets you close enough on tools.
Do this with your current van before you replace it. It is the most useful hour in the whole buying process.
Buy for your heaviest regular load, not your average one
Average loads do not get weighed at the roadside; the worst Tuesday of the month does. If one job a fortnight needs materially more capacity than the rest, that job sets your requirement — or you accept two trips and plan for it deliberately.
A size up often costs less than you fear over a finance term, and much less than a prohibition, a damaged rear axle or a declined claim. Note too that going up in capacity can move you past 3,500kg MAM, which changes what licence you need to drive it.
Where we fit in
CW Asset Finance is an independent credit broker in Tadcaster, North Yorkshire, working across the whole UK. We are not a dealer and have no stake in which van or spec you choose, so there is nothing in it for us if you over-buy. We fund the vehicle that suits the work, through a panel of over 60 lenders, on [van finance](/lcv-van-finance/) for new or [used vans](/lcv-van-finance/used-vans/). There is no broker fee to you — we are paid a commission by the lender on completion. Indicative decisions can come back in as little as 24 hours, though every decision rests with the lender. To sketch out a deal first, try the [van finance calculator](/lcv-van-finance/calculator/).