Deposit and stage payment plan for trade jobs
Larger jobs fail financially when payment timing does not match delivery timing. This framework keeps projects funded and communication clean.
A £28,000 extension. You spend £11,000 on materials in the first fortnight. The client is lovely, the job is on track, and you are technically in the red until the next stage payment - which is in six weeks, on a date you never actually agreed in writing.
Profitable jobs can still sink a business if the money arrives after the bills do.
Stage payments are not about being strict with clients. They are about making sure the timing of your bank balance matches the timing of your costs.
Use deposits to secure project commitment and materials
A deposit is not just protection against cancellation. It funds the units, the worktops, the bricks, the rolls of cable that need ordering before you have driven a single screw.
Work it backwards from the actual early-stage cost, not from a generic percentage. On the £28,000 extension with £11,000 of materials in week one, a 10% deposit puts you £8,200 in the hole on day two. A 40% deposit, billed and paid before the diggers turn up, means the client has skin in the game and your invoice book is not subsidising their build.
- Calculate material and prep requirements before quoting.
- Set deposit percentage by project risk and lead time.
- Define when work is booked into the schedule.
- Issue deposit invoices immediately after acceptance.
Align stage payments to visible milestones
"30% at second stage" is a sentence that triggers an argument. "£8,400 due when the steel is in and the floor is laid" is a sentence the client cannot reasonably argue with - they can stand on the floor.
Pick milestones the client can see and walk on. Slab down. Walls up. Roof on. First fix complete. Plaster signed off. Each one gets its own invoice on the day it is hit, not at the end of the month. The client knows what they are paying for because they are looking at it.
- Use milestone names clients understand clearly.
- Describe what completion looks like at each stage.
- Send stage invoices promptly when milestones are hit.
- Track part-payments where projects are phased.
Close projects with clean final billing
Most "final invoice arguments" started ten weeks ago, when stage two was raised three days late, stage three got bundled with a variation that nobody approved properly, and the deposit was paid into a bank account using a reference the client cannot remember. By final-invoice day there is nothing to argue about specifically, just a general feeling of confusion.
A clean close is the by-product of clean stages. Each stage paid on time, each variation written down with its own approval, each invoice tied to the original quote. By the time the final invoice goes out, it is a tidy receipt of work everyone has already agreed and paid for, plus the snagging final figure. The conversation takes five minutes and the bank transfer is in by Friday.
- Reconcile all prior stage payments before final invoice.
- Attach completion evidence where relevant.
- Set clear due dates and payment options.
- Archive billing history alongside project records.
A simple workflow for better quote preparation
Define deposit and milestone plan in the original quote.
Issue deposit invoice on acceptance and confirm schedule.
Send stage invoices as objective milestones are completed.
Close with final billing and complete payment record history.
Cash flow problems on big jobs almost never look like cash flow problems at the time. They look like a quote you wrote in a rush three months ago.
Set the milestones before you set the price, and the rest of the project pays for itself as it goes.
If your next big job is going out with "30% deposit, balance on completion" as the only payment line, the gap to close is the schedule. Pick a quoting tool that lets you build deposit + named milestone stages into the quote itself, raise stage invoices the same day each milestone is signed off, and tie every payment to the original scope. CMA does this on one record - try a deposit-plus-milestone schedule on the next extension or refit you quote.
Common questions
How should I choose deposit percentage for a trade project?
Base it on early material costs, lead-time commitments, and project risk so initial expenses are properly covered.
What makes stage payments easier for clients to accept?
Clear milestone definitions with visible outcomes make progress billing easier to understand and approve.
Can stage invoices be linked to accepted quote lines?
Yes. Linking staged billing to original quote scope improves transparency and reduces disputes.
Related resources
Explore relevant product pages, trade guides, and supporting articles to build this workflow in your business.
Related CMA features
Explore the product areas that support this workflow from first client message to approved quote.
CMA helps tradespeople keep project media, client communication, and quoting in one place so work moves faster from first enquiry to approved quote.