Cash Flow Tips for Trade Businesses

Cash Flow Tips for Trade Businesses

Cash flow is the gap between money going out and money coming in, and it is what kills profitable trade businesses. You can have a full diary, good rates and a fat order book and still not be able to pay for materials on Monday. Fixing cash flow is not about earning more. It is about changing when the money moves.

Why profitable trades still run out of money

A trade business pays out early and gets paid late. You buy materials on day one, you pay a labourer weekly, you fuel the van every few days. The customer pays when the job is finished, or when they get round to it, or when their own money lands. On a single small job that gap is survivable. Run three jobs at once with material-heavy specs and the gap becomes thousands of pounds you are effectively lending to your customers for free.

Add seasonality on top — quiet Januaries, a boiler-heavy Q4, a washed-out fortnight for roofers — and the same business can be flush in November and scraping in February. Profit is an annual number. Cash flow is a weekly one.

Take a deposit on every job that needs materials

The single biggest change most sole traders can make is asking for money up front. A deposit that covers materials means you are never funding someone else’s kitchen out of your own account.

A reasonable structure for a job with a material spend is a deposit covering materials plus a slice of labour, taken before you order anything. Customers accept this far more readily than trades expect — it is standard practice across the industry, and a homeowner who refuses to put anything down before you buy £2,000 of boiler is telling you something useful about how the final invoice will go.

Put it in the quote in plain words: what the deposit is, when it is due, and that materials are ordered once it clears. No deposit, no order date.

Stage the billing on anything over a week

For longer jobs, do not wait until the end. Break the job into stages tied to visible milestones — first fix complete, plaster on, second fix complete, snagging signed off — and invoice at each one. Milestones the customer can see are far easier to bill against than a percentage of time elapsed.

Staged billing does two things. It keeps your account topped up as the job runs, and it gives you an early warning. If a customer is slow paying stage two, you find out before you have sunk another three weeks and another material order into them.

Invoice the day the work is done

Late invoicing is self-inflicted. Every day between finishing a job and sending the invoice is a day added to the front of your payment terms, and it is a day where the job is fresh in your head but going stale in theirs.

Invoice from the van. Most trade job-management apps let you raise and send an invoice from your phone before you have packed the ladders away, and the ones that do not are worth replacing. Set your terms clearly — 7 or 14 days is normal for domestic work, and there is no rule that says you must offer 30. Include your bank details on the invoice itself and make the reference obvious.

If you are VAT registered, remember the money in your account is not all yours. Trades regularly come unstuck by treating a VAT-inclusive payment as spending money and then finding the quarter’s bill is bigger than the balance.

Chase early, chase politely, chase in writing

Most late payment is not malice. It is a homeowner who filed the invoice and forgot, or an office that only runs a payment run on Fridays. A short, friendly nudge the day after terms expire clears most of it.

Have a ladder and stick to it: a polite reminder at day one overdue, a firmer one at seven days referencing the agreed terms, then a formal letter before action. Keep every step in writing — email or the messaging in your job app — so there is a trail if it ever goes further. Under UK law you can charge statutory interest and a fixed recovery cost on commercial late payments, which is worth knowing about even if you rarely use it.

For commercial customers, ask who raises the purchase order and who signs off payment before you start. A job that needs a PO number and does not have one will not get paid, no matter how good the work was.

Build a buffer before you need one

Aim to hold enough cash to cover your fixed outgoings — van, insurance, phone, tools, your own drawings — for a set number of weeks without a single payment landing. Most trades who have been through a quiet spell settle on something in the region of two to three months.

The way to build it is boring and it works: move a fixed percentage of every payment into a separate account the day it arrives, and do not treat that account as available. Keep the tax money somewhere separate again. Three pots — trading, tax, buffer — is the simplest system that survives a busy month.

Control the material outlay

Materials are where cash disappears fastest. A few habits help:

Open trade accounts with your main merchants and use the credit terms properly. Thirty days on materials against fourteen days on your invoice flips the gap in your favour.

Order per job, not per hunch. Stock sitting in the van or the garage is cash you have already spent.

Get the customer to buy the big-ticket items directly where it suits — some homeowners prefer choosing their own bathroom suite anyway, and it takes the outlay off your books.

Price material rises into quotes with a validity period. A quote that is open-ended is a promise to absorb whatever the merchant does next.

Know your numbers weekly

You do not need accounting software to run a cash flow forecast. A simple sheet with the next eight weeks across the top, expected money in on one row and known money out on another, tells you which week is going to hurt long before it does. Update it on a Sunday evening. Ten minutes a week is enough to stop most cash crises, because the fix — pull a stage payment forward, delay a tool purchase, chase two invoices — is easy when you see it three weeks out and impossible when you see it on the day.

With Making Tax Digital for Income Tax now in force from 6 April 2026 for qualifying income over £50,000, more trades are keeping digital records quarterly anyway. If you are doing the record-keeping, you may as well read the numbers.

Turn down the wrong work

Cash flow is also a pricing problem. A customer who haggles hard, wants long terms and pays late is costing you money even at a decent headline rate. If your diary is full of low-margin, slow-paying jobs, the answer is not to work more hours. It is to raise your rates and replace the bottom of your customer list.

That is easier when you have a steady flow of new enquiries to choose from. Trade Pilot is free to join and only charges when a real local job lands in your inbox — you buy the lead, not a monthly plan — and each lead is sold to no more than three trades in the area, so you are not one of eight people ringing the same homeowner.

FAQ

How much deposit should a tradesman ask for?

Enough to cover materials plus a reasonable slice of the labour. On a material-heavy job that might be a third or more of the total; on a labour-only job you may not need one at all. Set it out in the quote and order materials only once it has cleared.

What payment terms should I put on a trade invoice?

For domestic customers, 7 or 14 days is normal and widely accepted. Longer terms are a commercial-customer convention, not a legal requirement. Whatever you choose, state it on the quote as well as the invoice so it is agreed before you start.

Can I charge interest on a late invoice?

For business-to-business work you can charge statutory interest and a fixed sum towards recovery costs once payment is overdue. For domestic customers it depends on what your contract says, so include a late payment clause in your terms if you want the option.

How big should my cash buffer be?

Enough to cover fixed costs and your own drawings through a quiet spell. Trades who have lived through one usually aim for two to three months. Build it by moving a fixed percentage of every payment into a separate account automatically.

Should I use invoice finance?

It can bridge a genuine gap, but it is expensive money and it treats the symptom. Fix the deposits, staging and chasing first — most trade cash flow problems disappear once the timing changes, without borrowing against your own invoices.