Who buys the materials — and what changes when they do
You can supply the materials, the client can, or you can work from an allowance in the quote. Each choice moves the guarantee, the waiting, and your own cash in a different direction — decide which one before the job starts, not once a delivery goes wrong.
Materials get bought three ways: you supply them, the client supplies them, or you supply against an allowance. When the client supplies materials, your guarantee usually covers your labor, not their parts, and a wrong or late delivery is their problem to chase. Materials money leaves your account at the supplier and returns on the client’s invoice, so put the allowance and the lead time in the quote, not a text message later.
Every job with parts in it needs one decision made before you start: who buys them. Get it right and it barely comes up again. Get it wrong, and a late delivery or a damaged part turns into an argument about whose problem it is.
Three ways to buy the materials
Pick one before you quote, not after the client asks:
- You supply them. You buy the materials, mark them up, and they sit on your invoice as one line or several. You control the brand, the quality, and the delivery date.
- The client supplies them. The client buys the parts and you fit or install them. You quote your labor only, and you take on whatever the client actually delivers to site.
- You supply against an allowance. You quote a fixed sum for materials — a provisional sum — and true it up once you know the real cost.
What changes when the client supplies the materials
Handing the buying over to the client feels like it saves you a step. It also hands over a few things you might not expect:
- Your guarantee. A workmanship guarantee covers your labor. It does not automatically cover a part the client bought — a tap that fails a month after you fit it usually isn’t your problem if the client chose and paid for that tap.
- A wrong or short delivery. If the client’s order is missing a piece or turns out to be the wrong size, that’s a call to their supplier, not a fix you owe for free.
- Storage. Parts that arrive before you do need somewhere dry and safe to sit. Agree where, and who’s responsible for them once they’re there.
- Who waits when a part is late. If the client is buying, a late delivery is the client’s wait, not a delay you caused — say so plainly rather than quietly absorbing the blame for someone else’s supplier.
See client-supplied materials for the full rundown, including what to write down before you agree to it.
Money out before money in
When you’re the one buying, the materials cost leaves your account at the supplier, days or weeks before the client’s invoice pays you back. A deposit is what closes that gap — see deposits and progress invoices for how much to ask for and when. If you want to see exactly how much of your own cash is tied up and for how long, the free materials up-front check runs the numbers on your own job.
Lead times belong in the quote
“The part’s on backorder” is a much easier conversation before the job starts than halfway through it. If a material has any real lead time, state it on the quote, with a realistic start date built around it — not a text message sent once the client is already expecting you.
What to put in the quote
Whichever way you’re buying, three things belong on the paper, not in your head:
- The allowance, if you’re quoting a provisional sum — the figure, and what happens if the real cost lands above or below it.
- How long the supplier’s price holds, so a rise before you order isn’t a surprise you absorb alone.
- Who receives the delivery, if the client’s buying — you, on site, or the client themselves.
The free terms and conditions builder already has a materials clause — fill in the numbers that fit this job and it goes straight into the quote.
Confirming who’s buying, chasing a wrong delivery, or setting a lead time before you order — the materials and parts scripts have the exact messages for each.
Common questions
Do I have to guarantee materials the client bought?
No. Your workmanship guarantee covers your labor, not a part someone else chose and paid for. Say this plainly before the job starts, not after a part fails.
Who pays if a client-supplied part arrives late?
The client does, in time. A delivery they’re waiting on is their wait, not a delay you caused — quote a start date that depends on the part actually being on site, not a guess.
Should I ask for materials money up front?
Yes, for anything you’re buying yourself. A deposit that at least covers the materials means a supplier bill never comes out of your own pocket before the client’s invoice arrives.
What if the real materials cost is different from my allowance?
State it as a provisional sum and true it up once you know the real number, up or down, rather than quietly absorbing a rise or under-billing a saving.
Want the materials cost sitting with the job?
BizBinder doesn’t track your supplier, your delivery, or your lead time — that’s still yours to manage. What it does keep is the materials cost on the job record next to the price and the invoice, so the job you go back to has the real number attached, not a guess.
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- guide How to price a job so the number holds up The quote only works if the number underneath it does. Start with the price, then write it up.
- tool Free Quote & Estimate Generator Fill in your business and client details, add line items — mark anything optional — set a deposit, and watch a clean quote build itself. Turn it into an invoice with one click.
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