AV rental companies are remarkably good at generating revenue. They're often less good at keeping it. The nature of the business - complex jobs, tight timelines, a mix of owned and sub-hired equipment, freelance crew - creates dozens of places where money quietly leaks out.
Most of these leaks aren't dramatic. No single one will sink your company. But collectively, they erode margins month after month until you're working harder for less. Here are the most common ones and, more importantly, what to do about them.
Under-billing for labour
This is the biggest one, and it's almost universal. A job is quoted with two technicians for 10 hours. On the day, it runs to 12 hours and you need a third person for the load-out. The extra hours and the additional crew member either don't get billed at all or get billed weeks later when the details are fuzzy.
The root cause is usually a disconnect between the people on site and the people generating invoices. The project manager knows the job ran over. The accounts team doesn't, because nobody updated the system in the moment.
The fix: Real-time time tracking tied to project billing. When crew hours are captured digitally as they happen - not reconstructed from memory days later - the data is already there when the invoice gets generated. Automatic overtime calculations mean nobody has to remember the threshold.
Ghost equipment: assets you own but can't find
Every rental company has equipment that exists in the system but not in reality. It's on a shelf somewhere. It's in someone's van. It went out on a job six months ago and never came back. Nobody's quite sure.
Ghost equipment costs you twice: you can't rent it out, and you might be insuring, depreciating, and maintaining records for assets that are effectively gone. In larger fleets, ghost equipment can represent tens of thousands of pounds in phantom inventory.
The fix: Regular stock checks using barcode or QR code scanning. Not annual inventory counts that take a week and everyone dreads, but continuous verification. Every time an item goes out, it gets scanned. Every time it comes back, it gets scanned. Discrepancies surface in days, not months.
Sub-hire margins that vanish
Sub-hiring equipment to fulfil a job is often necessary. The problem arises when the sub-hire cost isn't properly tracked against the project budget. You quote the client for a 12K laser projector at your standard rate. You sub-hire it for 70% of that rate. On paper, you're making 30%. But add delivery charges from the supplier, insurance, your staff time to collect and return it, and the real margin is closer to 10%.
Even worse: when sub-hire costs aren't captured at the project level, they disappear into general expenses. The project looks profitable. The P&L tells a different story.
The fix: Every sub-hire cost must be recorded against the specific project it serves. Build sub-hire margin calculations into your quoting process so you know the true margin before you commit. Set minimum margin thresholds for sub-hired items and flag quotes that fall below them.
Scope creep without re-quoting
The client calls on Thursday. "Can we add a couple of monitors in the breakout rooms?" Sure, no problem. Then on Friday: "Actually, could you bring some extra speaker stands?" And on Saturday morning: "We need another follow spot."
Each addition is small enough that it feels awkward to send a revised quote. So they get absorbed into the job. By the end of the event, you've supplied 20% more equipment than was quoted, and the invoice reflects the original scope.
The fix: Make change orders frictionless. A quick digital approval for additional items, sent from site, signed off by the client on their phone. It doesn't need to be bureaucratic. But it does need to be captured. If adding an item takes one click, there's no excuse for not doing it.
Equipment damage that doesn't get charged
Items come back from jobs damaged. A scratched lens, a dented flight case, a cable with a dodgy connector. If the damage isn't documented at the point of return - with photos and a clear record of which job it came from - it becomes very difficult to charge the client after the fact.
"We noticed some damage to one of the moving heads" sent two weeks after the event rarely results in payment. "Here's the damage report with photos, signed off at site by your event manager" is a different conversation entirely.
The fix: Damage reporting as part of the return workflow. When equipment comes back, it gets inspected. Damage gets photographed and recorded against the job immediately. The client is notified within 24 hours with evidence. Your terms and conditions should cover this - but the process makes it enforceable.
Late invoicing
The speed at which you invoice directly correlates with the speed at which you get paid. Invoice within 48 hours of the event and clients pay on time - the job is fresh in their memory and the budget is still allocated. Invoice three weeks later and it joins a queue, gets questioned, gets delayed.
Late invoicing is almost always a process problem. The information needed to generate the invoice is scattered: some in the RMS, some in emails, some in someone's head. Assembling it takes time nobody has during busy periods, so it gets pushed back.
The fix: If your project data is complete - equipment list, crew hours, sub-hire costs, additional items - generating the invoice should be near-automatic. The goal is to get a draft invoice ready within hours of the job completing, needing only a quick review before sending.
Maintenance costs that spiral
Reactive maintenance is always more expensive than preventive maintenance. Waiting until a projector fails on site costs you: the emergency sub-hire to replace it, the disappointed client, the repair bill, the crew time to swap it out.
Tracking maintenance properly means knowing: when was each item last serviced? How many hours or rental days since the last service? What's the maintenance history? Are certain items consistently problematic?
The fix: Scheduled maintenance triggers based on usage, not just calendar time. A moving head that's been out on 30 jobs needs attention before one that's done 5, regardless of whether they were both serviced on the same date. Flag items that exceed maintenance thresholds before they go out, not after they fail.
Poor pricing on repeat clients
Long-standing client relationships are valuable. But they can also become a source of margin erosion if rates haven't been reviewed in years. The quote template you set up for a regular client in 2022 might still be using 2022 rates for equipment that now costs more to own, maintain, and insure.
The fix: Annual rate reviews for all regular accounts. Compare client rates against your current rate card. Identify where discounts have crept beyond what's commercially sensible. A 10% loyalty discount is reasonable. A rate that's 35% below your current pricing because it was never updated is not.
The compound effect
None of these issues is catastrophic in isolation. A few hundred here, a few thousand there. But compound them across hundreds of jobs per year and the impact is significant. A company doing a million in revenue that plugs these leaks might find an extra 80,000-120,000 in actual profit.
The common thread is data. Every one of these problems is either caused by missing data or solved by capturing it. Real-time equipment tracking. Digital time records. Project-level cost capture. Automated damage reporting. Fast invoicing from complete records.
The technology to fix all of this exists today. The question is whether your current systems make it easy or whether they add friction that means people work around them instead of with them. If it's the latter, that's where the money is going.