Haulage is one of the toughest working capital businesses in Britain. You pay for diesel the day you fill up, you pay your drivers weekly, and then you wait six to eight weeks for the client to settle the invoice. Every load you run is, in effect, a short-term loan you make to your customer – funded out of your own bank account. The faster you grow, the bigger that loan gets.
That is why so many profitable haulage firms feel permanently short of cash. The profit is real, but it is locked up in trucks that have already run, fuel that has already been burned and wages that have already been paid, waiting on a debtor ledger that pays slowly. Understanding that gap – and funding it deliberately rather than scrambling each month – is the difference between a haulage business that can take on the next contract and one that has to turn it down.
Why Haulage Has a Working Capital Problem by Design
Most of your costs are paid before or at the moment the work is done. Diesel is the obvious one: you cannot run a wheel without it, and the pump wants paying now. Driver wages run weekly in much of the sector. Vehicle finance, insurance, VED, tolls, maintenance and the operator’s licence are all fixed, rhythmic outgoings that do not wait for your customers.
Your income, by contrast, arrives on your customer’s timetable. Industry figures from the Road Haulage Association suggest road haulage SMEs offer average payment terms of around 42 days, while their larger corporate customers actually pay after roughly 55 days. So you fund the fuel and the wages for a load today, raise the invoice, and bank the money the best part of two months later.
The result is a long, positive cash conversion cycle: cash goes out well before it comes back in. That is the mirror image of hospitality, where customers pay instantly and suppliers give credit. A haulier gets no such cushion. The RHA has estimated that at any one time UK road haulage firms are collectively owed around £2.1 billion in unpaid invoices – money that has been earned and spent but not yet collected.
The Haulage Working Capital Benchmarks
Here is roughly what the numbers look like for a typical UK general haulage or distribution firm:
| Metric | Typical benchmark | What it means |
|---|---|---|
| Days Sales Outstanding (DSO) | 45–60 days | The real wait to be paid – longer than the terms you quoted |
| Days Inventory Outstanding (DIO) | 0–5 days | You carry little stock – mainly fuel, tyres and parts |
| Days Payable Outstanding (DPO) | 7–30 days | Fuel is near-immediate; some parts and tyres on short credit |
| Cash Conversion Cycle (CCC) | +25 to +50 days | Positive and long – you fund a month or more of trading |
The thing that makes haulage harder than most positive-cycle businesses is that the biggest single cost, fuel, carries almost no payable period at all. In a manufacturer, a long DSO is partly offset by supplier credit on raw materials. In haulage, your largest input is paid for on the forecourt, so there is nothing to net it off against. Your DPO cannot stretch to cover your DSO, and the gap lands squarely on your cash.
Why Your Real DSO Is Worse Than Your Terms
The 42-day terms are the quoted figure. The 55-day reality is what actually hits your bank. The difference – nearly two weeks – is pure, unfunded working capital, and it is money you are lending your customer whether you meant to or not. Large shippers and retailers know a small haulier rarely pushes back, so the terms drift. Measuring your own days sales outstanding against the terms on your invoices is the quickest way to see how much slippage you are quietly financing.
Fuel Is Where the Cash Squeeze Bites Hardest
Diesel is both your largest cost and your most volatile one, and in 2026 both of those have got worse. UK pump diesel has spent much of the autumn sitting just under 200p a litre – it touched a record weekly average of just over 200p in mid-October – and is up more than 50p a litre on the year. On top of the fuel itself, duty remains at 52.95p a litre with VAT charged over the top.
For a firm running serious mileage, a swing of a few pence a litre is a real number. A single 44-tonne artic covering 100,000 miles a year at around 8 miles per gallon burns roughly 56,000 litres; a 20p-a-litre rise adds about £11,000 of annual fuel cost to that one vehicle. Across a fleet, a bad quarter at the pumps can wipe out the margin on contracts that were priced months earlier.
This is why a fuel surcharge clause is not an optional extra – it is a working capital protection. A properly drafted clause ties your rate to a published diesel index and adjusts it monthly, so a price spike flows through to the customer rather than being absorbed by you. Hauliers without one are effectively fixing a price for fuel they have not yet bought, on a load that will not pay for two months. If your contracts do not have a surcharge mechanism, renegotiating one in is the single highest-value cash conversation you can have this year.
Drivers, Wages and the Weekly Cash Drain
After fuel, payroll is the other great weekly outflow. HGV driver pay has climbed sharply on the back of the well-documented shortage – the RHA has put the structural shortfall at tens of thousands of drivers – and ONS earnings data now puts the median full-time driver salary near £40,000 a year, with Class 1 drivers in high-demand regions well above that. Agency cover to plug gaps costs more again.
The cash-flow problem is not the level of the wage so much as its timing. Drivers are typically paid weekly, so a 50-truck operation is settling a very large payroll every seven days, out of invoices that will not be paid for seven or eight weeks. Add employer National Insurance at 15 per cent above the £5,000 secondary threshold and pension auto-enrolment, and the gap between “work done” and “cash received” is being bridged entirely by the operator.
Dave runs a 12-vehicle general haulage firm near Doncaster with revenue of £2.8 million. On paper he makes a net margin of about 3 per cent – roughly £84,000 a year – which is normal for the sector. But his weekly fuel and wage bill runs to about £38,000, while his customers, mostly large distributors, pay him on 55 days. At any moment he has around £420,000 of work invoiced or in progress that he has already paid for and not yet collected. His profit is real; it is just permanently tied up in that rolling £420,000 gap. When a customer slipped from 55 to 75 days last winter, Dave did not have a profit problem – he had a £70,000 hole that appeared overnight and nearly stopped his payroll.
Know your real position: use our free working capital calculator to see how many weeks of fuel and wages your firm is funding before the cash comes back, and the late payment calculator to work out what a slow-paying customer is actually costing you.
Growth Is the Most Dangerous Moment
The cruel maths of haulage is that winning work makes the cash position worse before it makes it better. Every new contract means more fuel and more wages paid out now, for invoices that pay in two months. Take on a big new customer and you have to fund the first two months of their diesel and drivers entirely from your own resources before a penny comes back. This is classic overtrading, and it is why the RHA has found that roughly one in four haulage SMEs have turned down contracts purely because they could not fund the cash gap.
Meena runs a five-vehicle refrigerated transport business in Bristol with revenue of £1.1 million. A supermarket supplier offered her a regional distribution contract worth £600,000 a year – a transformational win that meant adding three trucks and four drivers. The problem was the ramp-up: she would be paying wages, fuel, lease payments and agency cover for the new operation for nearly two months before the first invoice settled on 60 days. The contract needed about £90,000 of working capital to stand up, and Meena did not have it sitting idle. Rather than turn it down, she funded the receivables with invoice finance, which advanced around 85 per cent of each invoice within 24 hours of raising it. That turned a 60-day wait into a next-day payment and let the contract pay for its own growth. The finance cost a little over 2 per cent of invoice value – far less than the margin on the contract, and far less than the cost of saying no.
Funding the Gap: Which Options Fit Haulage
Because haulage generates a steady stream of invoices to creditworthy customers, it is one of the best-suited sectors for invoice finance, and most hauliers end up using some form of it.
Invoice finance
Factoring or invoice discounting advances most of an invoice’s value as soon as you raise it, releasing the cash you would otherwise wait 55 days for. The facility grows automatically as you invoice more, so it funds growth rather than capping it – the opposite of a fixed overdraft. Our guide to factoring versus invoice discounting explains the difference, and invoice finance versus an overdraft covers when each makes sense. For many hauliers this is the backbone of their cash management.
Overdraft and asset finance
An overdraft is useful for the week-to-week wobble but is too small and too fixed to fund real growth. Trucks and trailers should be bought on hire purchase or lease rather than cash, so that the asset pays for itself out of the work it does instead of draining the working capital you need for fuel and wages. Keeping vehicle purchases off your working capital entirely is one of the most important disciplines in the sector. The full range of options is set out in our guide to working capital finance for UK SMEs.
Tighten Collections and Terms Before You Borrow
Finance costs money, so the first move is to shrink the gap you need to fund. Invoice the day the load is delivered, not at the end of the week – every day of delay on raising the invoice is a free day of credit you are handing the customer on top of their terms. Make sure proof of delivery is attached, because a missing POD is the most common reason a haulage invoice sits in a customer’s query pile instead of their payment run.
You are also entitled to charge statutory late payment interest – 8 per cent above the Bank of England base rate plus a fixed recovery sum – on any invoice paid beyond its terms. Few hauliers enforce it for fear of losing the work, but even raising it in a conversation often speeds up a slow payer. If a customer has gone well past terms, our guide on what to do when a customer is 60 days late walks through the escalation. And where you genuinely can, negotiating better terms with your fuel card provider or parts suppliers buys back a little DPO at the other end.
Help may also be coming on the demand side. The Commercial Payments Bill 2026 is progressing through Parliament and is expected to cap maximum payment terms and tighten reporting on large companies – a sector where big customers routinely dictate 55-to-60-day terms stands to benefit as much as any. It is future relief rather than help this quarter, but it is worth understanding where it lands.
Frequently Asked Questions
Why do profitable haulage firms run out of cash?
Because the money is tied up in the gap between paying for a load and being paid for it. Fuel and wages go out immediately, but customers pay 45 to 60 days later, so a growing firm is permanently funding a month or two of trading out of its own pocket. The profit is genuine – it is just sitting in an unpaid debtor ledger rather than the bank. This is the classic profitable but no cash trap.
How much working capital does a haulage business need?
Enough to cover the fuel, wages and fixed costs for the full length of your real payment cycle – not your quoted terms. If your customers pay in 55 days and your weekly fuel and wage bill is £38,000, you need the thick end of two months of that, around £300,000–£420,000, available as cash or a finance facility before you are comfortable. A 13-week cash flow forecast is the only reliable way to size it for your own operation.
Is invoice finance worth it for a haulier?
For most growing hauliers, yes. The sector’s steady flow of invoices to large, creditworthy customers is exactly what invoice finance is designed for, and the cost – typically a small percentage of invoice value – is usually far less than the margin on the extra work it lets you take on. It is most valuable when you are scaling up and the cash gap would otherwise force you to turn contracts down.
What To Do Next
Start by working out your real cash gap: take your weekly fuel and wage outflow, multiply it by how many weeks your customers actually take to pay, and that is roughly how much working capital your business is funding at any moment. If that number frightens you, it should – but now you can manage it rather than be surprised by it.
Build a 13-week cash flow forecast with weekly rows, because fuel, payroll and the VAT quarter all fall on different weeks and a monthly view hides the pinch points entirely. Check every contract for a fuel surcharge clause and renegotiate one into any that lack it. Invoice on the day of delivery with the POD attached, and measure your DSO against your terms to see how much slippage you are financing.
Then, if growth is being held back by the cash gap rather than by available work, look seriously at invoice finance – in haulage it is rarely a sign of weakness and usually the tool that lets a good firm say yes to the next contract. Keep your trucks on asset finance and your working capital for the fuel and the wages, and the business that was always short of cash starts to run on something other than nerves.