Why Most Trade Contractors Run Out of Cash (Even When They’re Busy)

You’re fully booked. Your team is on site. The phone’s still ringing. And somehow, you’re staring at your bank account wondering how you’re going to cover wages on Friday.

If that sounds familiar, you’re not alone. Cash flow problems are the number one reason trade contracting businesses fail in the UK — not lack of work, not poor quality, not bad management. Cash flow.

And the cruel thing is, it hits hardest when you’re at your busiest.

The gap between doing the work and getting paid

Here’s the problem in plain English.

Your team starts on site Monday morning. They’re working hard, doing a proper job. Your materials cost you £800. Your labour cost you £1,200. That’s £2,000 out of your account before you’ve seen a penny back.

You raise the invoice at the end of the month. Your payment terms say 30 days. The client pays on 45. You’ve now waited 75 days from first spending money to seeing any of it back.

Do that across five jobs simultaneously — which any busy decorator, plumber, electrician, roofer or groundworker will tell you is normal — and you’re looking at tens of thousands of pounds tied up in work you’ve already done but haven’t been paid for.

That’s not a profit problem. That’s a timing problem. And most job management software doesn’t help you see it coming.

Tradify, Fergus and Jobber don’t show you the future

Tradify is great for quoting. Fergus handles job tracking well. Jobber works well for scheduling. But none of them show you what your bank account is going to look like in 8 weeks’ time.

They tell you what’s happening now. They don’t tell you what’s coming.

That’s the gap. You need to know — right now — which invoices are due in, when your wages go out, what your retention is sitting at, and whether you’re going to hit a cliff edge in week 10.

Without that visibility, you’re flying blind. I know because I ran a painting and decorating business without it for years before I built something better. I went through the alternatives one by one in I tried Tradify, Fergus and Timekeeper.

The 12-week cashflow forecast

The most useful thing any trade contractor can do is build a rolling 12-week cashflow forecast. Not a spreadsheet you update once a year. A live view that updates as your jobs move, your invoices go out, and your costs come in.

Here’s what it needs to show:

When you lay all of that out week by week for 12 weeks, two things happen. First, you see the gaps before they happen. Second, you stop getting surprised.

A decorator running five live jobs, a plumber with a mix of domestic and commercial work, an electrician juggling small works and a big fit-out — all of them have the same problem. The cash is there in theory. Getting the timing right is the hard part.

Retention is killing your cashflow and nobody talks about it

If you do commercial work, retention is probably your biggest cashflow drain — and the one that gets talked about least.

Here’s how it works. You complete a contract worth £50,000. Your client holds back 5% — £2,500 — until practical completion. Then another 6 months pass before they release the second half. You’ve done the work. Your team has been paid. And £2,500 is sitting in someone else’s account while you’re chasing it.

Multiply that across multiple commercial jobs and you could have £15,000, £20,000, £30,000 sitting in retention that you’ve earned but can’t touch.

I’ve been there. Most trade contractors don’t have a proper system for tracking it. You know it exists. You hope the client pays it. Sometimes you forget to chase it entirely — and they’re counting on that.

A proper cashflow system tracks every retention balance, when it’s due, and includes it in your forward forecast so you know exactly when that money is coming back.

The difference between turnover and cashflow

Your accountant will tell you your business made £400,000 last year. You’ll nod and wonder why you felt broke for most of it.

You can invoice £400,000 and still run out of money if the timing is wrong. A busy month of work in January, invoiced in February, paid in March, with wages going out every Friday in between — the maths works eventually, but in the short term you’re funding the gap yourself.

This is why small trade businesses with healthy order books go under. Not because the work dried up. Because the cash timing broke them first.

What Grafter Lab does differently

I built Grafter Lab because I was running a decorating business and couldn’t find software that solved this properly. Tradify, Fergus, Jobber, Timekeeper — good tools for parts of the job. None of them showed me what my bank account was going to look like in 8 weeks.

The Cashflow Control Room in Grafter Lab gives you a rolling 12-week forecast that pulls everything together — your live jobs, your sent invoices, your forecast revenue based on jobs in progress, your weekly wage bill, and your recurring overheads.

It flags the weeks where you’re going to be tight. It tracks every retention balance and when it’s due. And it updates in real time as jobs move and invoices go out.

Whether you’re a decorator, plumber, electrician, roofer, builder, plasterer, groundworker or carpenter running a team in the UK — this is the visibility that changes how you run your business.

Practical steps you can take today

You don’t need Grafter Lab to start improving your cashflow. Here’s what you can do right now:

1. Invoice faster. Every day between finishing work and raising the invoice is a day added to your payment wait. Invoice the same day where possible.
2. Tighten your payment terms. 30 days is standard. 14 days is better. Some trades are moving to 7 days on domestic work. Know what your contract says and hold people to it.
3. Chase retention proactively. Don’t wait for the client to remember. Diary the retention release date when you sign the contract and chase it a week before.
4. Know your weekly wage bill. It goes out regardless. Build it into your forecast every single week.
5. Build a 12-week forecast. Even a simple spreadsheet is better than nothing. List your expected income week by week and subtract your known costs. You’ll immediately see the weeks that need attention.
6. Separate your tax money. VAT and CIS deductions belong to HMRC, not to you. Keep them in a separate account from day one.

The bottom line

Being busy is not the same as being financially healthy. The trade contractors who build sustainable businesses understand their cashflow, track their retention, know their numbers 12 weeks out, and never get blindsided by a bad week.

I built Grafter Lab to make this straightforward for UK trade contractors — decorators, plumbers, electricians, roofers, builders, groundworkers, plasterers and carpenters — who are too busy running their teams to spend hours on spreadsheets.