Materials Markup: What UK Trades Actually Charge, and Why

Every trade owner can tell you their hourly rate to the pound. Ask what they make on materials and the answer gets vague. That vagueness is where a lot of small firms quietly lose their margin, because materials can be a third of a job's value and are often passed on at cost by accident.

There is a reasonable amount written about what to charge per hour and almost nothing about the other half of the invoice. This is the other half.

Why charging materials at cost is a mistake

The common instinct is that marking up materials is somehow sharp practice. You paid forty pounds, you charge forty pounds, you make your money on labour. It feels honest.

It is not honest accounting, because supplying materials is not free. You are absorbing:

• The time to source them. Ringing round, comparing, collecting, waiting at a trade counter.
• The money tied up. You paid for them, possibly weeks before the customer pays you.
• The risk. Wrong part, damaged part, surplus that never gets used, the return trip.
• The warranty. When a part fails in eight months, the customer rings you, not the merchant.

That last one is the big one. If you supply a part, you carry its failure. A markup is partly an insurance premium on your own future time.

If you truly want to charge cost, the clean way is to have the customer buy their own materials and accept that the warranty conversation is theirs. Most customers do not want that, which tells you the service has value.

What firms actually charge

Markups vary widely by trade, by job size and by how the item was sourced, and anyone quoting you a single universal number is guessing. What is more useful is the shape of it.

The pattern most firms end up with, once they think about it properly:

• Small consumables and fittings carry the highest percentage, because the sourcing time is disproportionate to the cost. A three pound part can take twenty minutes to obtain.
• Mid value items sit in the middle.
• Large single items carry the lowest percentage, because the percentage on a large number becomes a big absolute figure quickly and customers price check those.

The mistake is applying one flat percentage to everything. It overcharges on the boiler and undercharges on the box of fittings, which is exactly backwards from where your effort goes.

Markup and margin are not the same thing

This trips up a lot of people and it is worth thirty seconds.

If you buy at 100 and sell at 125, that is a 25 percent markup. But your margin is 25 out of 125, which is 20 percent. The bigger number is always the markup, and it is the one people quote at each other in the pub.

Decide which one you are managing to and use it consistently. Confusing the two is how a firm thinks it is making 30 percent and is actually making 23.

How to present it without a fight

Customers rarely object to a fair markup. They object to feeling deceived about it. Three approaches, all defensible:

Supply and fit as one price. You quote the job, not the parts. This is the most common and the least argued with, because there is nothing to line up against a merchant's website. It requires you to be confident in your own numbers.

Itemised with a stated supply charge. Parts at cost, plus a clearly labelled supply and handling line. Very transparent. Some customers appreciate it enormously and a few will ask why it exists, so have the answer ready: sourcing, warranty, and the money fronted.

Itemised at marked up prices. Honest, but it invites price checking on anything a customer can find online, and you will spend time defending a figure rather than doing the work.

There is no universally right answer. There is a wrong answer, which is having no policy and deciding differently on each job, because you will undercharge whenever you are tired or the customer is confident.

The quiet killers

Materials bought and never charged. The extra fittings from the van, the second trip, the bits you picked up personally. In firms without a per-job materials list, this leaks constantly and never shows up anywhere you would look.

Price rises absorbed silently. Merchant prices move. If your quote template carries last year's figures, you are funding the increase. Re-check your common items a few times a year at minimum.

Quotes that age. A quote given in March and accepted in July is a different job commercially. Put a validity period on it. There is more on making quotes work in writing a quote that wins the job.

Deposits that do not cover the parts. If you are fronting eight hundred pounds of materials on a job, the deposit should reflect that rather than being a token. How much deposit to ask for goes into the ranges.

Do this once, properly

Take your last ten jobs. For each, write down what the materials cost you and what the customer paid for them. Work out the actual percentage.

Most owners doing this for the first time find two things: the average is lower than they assumed, and the variation between jobs is much wider than they assumed. The variation is the more important finding, because it means the number is being decided by mood rather than policy.

Then set a policy, write it into your quote template, and stop deciding it per job.

Where software helps

Only by making the leak visible. If materials are recorded against the job, you can see what you charged against what you paid. If they are not recorded anywhere, no software can find them.

Our pricing is published, and you can open the live demo to see how jobs, quotes and invoices hang together. We do not do stock control, and we do not sync with your accounting package, so the figures reach your accountant by CSV and a human hand.

FAQ

Should tradespeople mark up materials?
Supplying materials carries real costs: sourcing time, money tied up before you are paid, the risk of wrong or surplus parts, and the warranty you carry when something fails. A markup covers those. Charging exactly cost means absorbing them out of your labour rate.

What is a typical materials markup for UK trades?
It varies by trade, job size and item, and any single universal figure is a guess. The more useful pattern is that small consumables usually carry a higher percentage than large single items, because the sourcing effort is disproportionate to their cost.

What is the difference between markup and margin?
Markup is measured against what you paid; margin against what you sold for. Buying at 100 and selling at 125 is a 25 percent markup but a 20 percent margin. Pick one and use it consistently.

Should I itemise materials on a quote?
All three approaches work: one supply and fit price, itemised with a stated handling charge, or itemised at marked up prices. A single job price attracts the least argument; itemising at marked up prices invites online price checking. What does not work is having no policy.

How do I stop losing money on small parts?
Record materials against the job every time, including the odds and ends off the van. Unrecorded small parts are the most common invisible leak, and nothing can recover what was never written down.

Key takeaways

• Charging materials at cost is not neutral. You absorb sourcing, cash flow, risk and warranty.
• Small items deserve a higher percentage than large ones. A single flat rate gets this backwards.
• Markup and margin are different numbers. Know which one you are managing.
• Have a policy, not a mood. Per job decisions drift downward whenever you are tired.
• Check your last ten jobs. The variation will tell you more than the average.