9 min read · Updated October 2026
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On a ÂŁ1,000 gutter clean or small repair, billing at the end of the day is standard. But on a ÂŁ10,000 patio or ÂŁ25,000 house renovation, waiting until the final handover to get paid is financial suicide.
Contractors often find themselves funding their customers’ projects: purchasing thousands of pounds in timber, skips, and specialist fittings, paying subcontractor wages week after week, and absorbing all the cash-flow risk.
Staged billing (progress invoicing) eliminates this trap. In this guide, we break down how staged billing works, the most effective payment splits, and how to keep every milestone linked from quote to final invoice.
1. What Is Staged Billing?
Staged billing breaks a single large contract into pre-agreed milestone payments tied to specific points of progress. Instead of sending one massive invoice at the very end, you invoice throughout the lifespan of the project.
A typical staged workflow follows a clean progression:
- Deposit Phase: Upfront payment (20%–30%) collected when the quote is accepted to cover materials and lock in site dates.
- Milestone / Progress Phases: Intermediate payments (e.g., 30%–40%) triggered when major project milestones are reached.
- Final Phase: The remaining balance (e.g., 30%), minus all previously credited payments, billed upon final sign-off.
2. Why Contractors Must Stop Funding Jobs Out of Pocket
Trade insolvencies rarely happen because a contractor lacks work. They happen because profitable businesses run out of working capital while waiting to get paid.
When you implement staged billing:
- Materials are funded by the client: You never max out your merchant accounts or overdraft to purchase tiles, plasterboard, or groundworks materials.
- Payroll stays healthy: You have cash in the bank every Friday to pay your team and subcontractors.
- Financial risk is capped: If a customer encounters a dispute or halts the project midway, you are only exposed for the current stage, not the entire ÂŁ15,000 project.
3. Standard Staged Billing Splits for UK Trade Projects
The exact split depends on the trade and the balance between materials and labour. Here are the three most common schedules:
A. The 30 / 40 / 30 Schedule (Best for Mid-Sized Projects £5k–£15k)
- 30% Deposit: Paid upon quote acceptance. Covers raw materials and plant hire.
- 40% Midpoint Milestone: Invoiced when groundwork/rough-in is complete.
- 30% Final Balance: Invoiced upon final inspection and client sign-off.
B. The 20 / 30 / 30 / 20 Schedule (Best for Major Renovations ÂŁ15k+)
- 20% Booking Deposit: Paid to secure the date in your calendar.
- 30% Site Commencement: Invoiced on day 1 as heavy materials arrive on site.
- 30% First Fix / Substantial Completion: Invoiced when first fix plumbing/electrics or structural work is signed off.
- 20% Final Handover: Invoiced upon completion of snagging.
4. The Golden Rule: Don’t Start Until the Deposit Clears
Agreeing to a deposit in writing is only half the battle. Many tradespeople fall into the trap of starting work because the client promised “the bank transfer is on its way.”
The most reliable trade businesses treat the deposit as an operational gate:
- Materials are not ordered until the deposit clears.
- Site arrival is not confirmed until the funds are in your account.
Automate Your Deposits & Staged Billing with GoTaskhub
GoTaskhub handles the entire sequence automatically: quotes create instant deposit invoices, card payments switch jobs to “Deposit Received” so you know you’re safe to order materials, and final invoices cleanly deduct the deposit so there are zero customer misunderstandings.
5. How to Handle the Deposit on the Final Invoice
One of the most frequent sources of friction between trades and homeowners is messy final invoices. If you send an invoice that simply says “Remaining Balance: £3,000”, customers often hesitate or ask for itemised proof.
The best practice is full-scope transparency:
- List the complete job breakdown showing the full ÂŁ10,000 project value.
- Add a dedicated credit line item:
Deposit Received: -ÂŁ3,000. - Add intermediate progress payments:
Stage 2 Payment: -ÂŁ4,000. - Display the clean remaining balance:
Balance Due: ÂŁ3,000.
This reassures your customer that their previous payments were recorded accurately and validates the total value delivered.
Summary: Protect Your Margins with Connected Billing
Staged billing isn’t about being difficult with clients; it’s about running a sustainable, professional trade business. By collecting upfront deposits, tying payments to visible progress milestones, and keeping invoices connected to your quotes, you safeguard your cash flow and finish every job with confidence.