How to Stop Funding Jobs Out of Your Own Pocket as a Builder
The short answer
You fund jobs when money goes out before it comes in. Work out each job's cash gap, then close it: stage payments due before each stage, long-lead items paid by the client, trade credit, variations billed as you go, and CIS, VAT and retention planned for, not discovered.
- It's a timing problem, not a profit problem. Profitable jobs can still drain your account for weeks.
- Measure the cash gap: the most you're out of pocket on a job at any point.
- Biggest fix: stage payments due before each stage starts, and the client pays for big orders when you order them.
- Then: 30-day trade accounts, and CIS, VAT, retention and wages planned for. Never let a new deposit pay for an old job.
Busy all year, jobs priced properly, decent margin on paper. And yet every month you're moving money from your personal account to pay the merchant, the subbies and the lads. The client's next payment is "next week". It always is.
That isn't bad luck. It's a pattern, and it's fixable. You're funding jobs out of your own pocket because your money goes out before the client's comes in. Here's how to stop it: measure the gap, then close it. If you want a second pair of eyes on your live jobs, book a free strategy call.
This is general information from a contractor's experience, not financial advice.
Find the cash gap that has you funding jobs out of pocket
Profit tells you whether a job makes money. The cash gap tells you how much of your money the job needs while it runs. It's everything you've paid out minus everything the client has paid, at the worst point.
Here's an illustrative £40,000 kitchen and rear room job over 5 weeks, with costs of £32,000 (labour weekly, materials as ordered). Same job, two payment schedules:
| End of week | Costs paid to date | Paid by client (after each stage) | Your cash position | Paid by client (before each stage) | Your cash position |
|---|---|---|---|---|---|
| Start | £3,000 | £4,000 | +£1,000 | £4,000 | +£1,000 |
| Week 1 | £9,000 | £4,000 | −£5,000 | £12,000 | +£3,000 |
| Week 2 | £17,000 | £12,000 | −£5,000 | £24,000 | +£7,000 |
| Week 3 | £24,000 | £12,000 | −£12,000 | £32,000 | +£8,000 |
| Week 4 | £29,000 | £24,000 | −£5,000 | £38,000 | +£9,000 |
| Week 5 | £32,000 | £32,000 | £0 | £40,000 | +£8,000 |
| After snagging | £32,000 | £40,000 | +£8,000 | £40,000 | +£8,000 |
Same profit, £8,000. On the first schedule the job needs £12,000 of your money in week 3. On the second it never needs a penny. Now multiply by three or four live jobs.
- Do this for every live job: costs out per week against payments in per week.
- Add up the worst week across all jobs. That's how much cash the business needs.
- If it's more than you have in the bank, you will run short, however profitable the jobs are.
The 7 causes, and the fix for each
| Cause | What it costs you | The fix |
|---|---|---|
| Stage payments after each stage | 1–3 weeks of labour and materials per stage | Make each stage payment due before that stage starts |
| Big orders on your account | Kitchens, windows, steels paid weeks before you're paid | Client pays on order, or pays the supplier directly |
| Paying merchants upfront | Materials out of your account on day one | 30-day trade accounts, paid after the client's stage payment |
| Variations "settled at the end" | Extra work funded for weeks, sometimes never paid | Price in writing first, bill with the next stage |
| New deposits finishing old jobs | Every new job feels like relief, until one goes wrong | Track cash per job; each job pays for itself |
| CIS, VAT and retention ignored | 20% CIS, VAT bills, 3–5% retention you can't spend | Plan for them in the job's cash sheet before you start |
| Wages weekly, client monthly | A month of wages before the first application is paid | Monthly applications on time, prelims claimed as time passes |
The biggest two are almost always the first two. Here's how much deposit to take and a stage schedule you can copy. On commercial jobs paid monthly, a payment application that's hard to cut does the same job.
Using the next client's deposit to pay this job's merchant. It works until one client delays, then every job is short at once.
Not sure how big your cash gap is?
Book a free call and we'll work it out on your live jobs with you.
Keep the money where it belongs
Even with good terms, money in one account gets spent on whatever shouts loudest. Simple habits stop it:
- Separate the tax money. Move VAT and a share for corporation tax or self-assessment into a separate account the day each payment lands.
- One cash sheet per job. Money in, money out, by week. Five minutes on a Friday.
- Pay yourself a fixed wage from profit, not whatever's left after the merchant.
- Forecast four weeks ahead. What comes in and goes out each week across all jobs. A gap you see in week 4 can be fixed. A gap you find on Friday can't.
Already can't pay suppliers or wages this week? Follow our 7-day plan for builders who can't pay suppliers first. Then come back to this.
A job that needs your money to run is a job you're financing. You'd never lend a client £12,000 interest-free for a month. That's exactly what a payment-after-stage schedule does.
Borrowing against your invoices only makes that gap more expensive: see when invoice finance makes sense. To change the terms on your next quotes with us, book a free strategy call.
Why profitable builders still run short
The jobs aren't the problem. The terms are. Most builders copy the schedule homeowners are told to ask for. They invoice after the work and plan for nothing in between.
Our cash flow guide covers the fixes above in full, with a fill-in payment schedule. If your accounts show a profit but the bank doesn't, see profitable on paper but no cash for the 7 places the money hides.
Ghennadi, a decorator from Northampton, went from £2K to £13.5K a month profit in 60 days, largely by pricing jobs properly and presenting quotes live. Individual results, not typical or guaranteed.
Cash gap checklist
Want to score your cash flow against five other areas of your business? Take the free 4-minute Construction Business Scorecard.
Want the whole system set up around your business? 1-to-1 mentoring with Sviat, who runs Craftex today, starts with cash and margin. It aims for results in about 4 months, not a 1–3-year program. On the tools and under £500K a year? Watch our free training first.
This Friday
- Cash gap worked out for every live job
- Stage payments due before each stage on every new quote
- Big orders paid by the client on order
- Trade accounts open with your main merchants
- VAT and tax money in a separate account
