Virtual CFO for Architecture and Engineering Firms in Sydney
A virtual CFO for Sydney architecture and engineering practices: stage-payment cashflow, WIP truth, and project margin visibility for principals.
An architecture or engineering practice bills in stages and spends continuously, which means the cash curve and the cost curve rarely line up. Add work in progress that no one is tracking and margin that only reveals itself at the final claim, and a busy practice can be quietly losing money on projects it thinks are profitable. This is a virtual CFO’s view of the numbers that run an A&E practice, for principals rather than accountants.
Published: July 2026
Architecture and engineering practices sell project work delivered over months, billed at milestones, and costed mostly in salaries paid every fortnight. The structural tension is timing: costs accrue smoothly as the team works, while revenue arrives in lumps at stage completion. Between milestones, the practice funds the work from its own cash.
Layered on top is work in progress: effort spent that has not yet reached a billable milestone. WIP is real value, but it is not cash, and a practice that lets it build without tracking it is financing its clients’ projects out of its own bank account. A virtual CFO engagement here starts with the cash curve and the WIP, and it draws on both the professional services and construction playbooks, since A&E sits between the two.
The first thing to model is the gap between when you spend and when you get paid. On a project billed at concept, design development, documentation, and contract administration, the practice may incur half its cost before the second claim is issued. Across several projects at different stages, those gaps overlap, and the practice’s cash position becomes a function of the collective billing schedule rather than of profitability.
Modelling this is not complicated, but it is rarely done. Set each live project’s cost curve against its claim schedule, aggregate them, and the practice can see its cash low points before they arrive, which is the difference between arranging a facility calmly in advance and scrambling for one in a tight month.
Work in progress is the effort logged against projects that has not yet been billed. Some of it will convert to a claim next month; some of it, the scope creep, the rework, the hours that will get written down at billing, will never be paid at all. Tracking WIP does two things: it shows how much cash is tied up in unbilled work, and it flags the projects where logged hours are running ahead of the fee, which is the early warning that a project is heading for a margin problem.
A practice carrying, say, $900,000 of WIP against $6M of fees has roughly two months of work sitting unbilled. Whether that is healthy or alarming depends on how much of it will actually convert, which is exactly the question WIP tracking answers and gut feel does not. The construction work in progress cornerstone covers the mechanics in depth; this page applies them to A&E.
The margin killer in A&E is that profitability varies by project phase, and the blended project margin hides it. Concept and early design often run to budget; documentation, where scope expands and detail multiplies, is where hours overrun the fee; contract administration can drag on unpaid long after the fee is exhausted. A project that looks profitable overall can be losing money in its final phases, and the practice only discovers it when the last claim is issued and the numbers are fixed.
Margin by phase lets principals see the drift while there is still time to manage scope, vary the fee, or resource differently. It turns the final-claim surprise into a monthly signal.
Take a $6M practice carrying $900,000 of WIP. On the blended numbers the practice is comfortably profitable. Rebuild it by project and phase and two things surface. A large documentation-phase project has logged 40 per cent more hours than the fee assumed, because the client kept revising and the variations were never formally captured, so a project the practice counts as a winner is actually running at a thin margin. And the aggregate cash model shows a low point three months out when two big projects sit between claims at the same time as tax is due. Neither was visible in the accounts; both are now decisions the principals can make early.
The natural fixed-scope deliverable is a 13-week cashflow forecast built around the collective claim schedule, or a WIP and project-margin reporting pack that shows unbilled work and phase-level margin drift each month. Either is a 90-Day Number engagement at a fixed $17,850 plus GST, delivered by day 90 and yours to run. For the tracking discipline on a specific project, see live feasibility tracking.
Past roughly $25M in fees, or where multiple offices and a finance team need daily leadership, a full-time finance director is the right call. Below that, the practice needs specific tools built well, a cash model, WIP tracking, phase margin, and a reporting rhythm, rather than a full-time hire. A project-based virtual CFO delivers those. See when you have outgrown a virtual CFO.
Why does an architecture or engineering practice run into cash trouble while profitable?
Because costs accrue smoothly while revenue arrives in milestone lumps. Between claims, the practice funds the work from its own cash, and across several projects at different stages those gaps overlap. A profitable practice can hit a cash low point simply because its billing schedule bunched, which is why modelling the collective cash curve matters.
What is WIP and why track it?
Work in progress is effort logged against projects but not yet billed. Tracking it shows how much cash is tied up in unbilled work and, more importantly, flags projects where logged hours are outrunning the fee, the early sign of a margin problem. Untracked WIP is how a practice finances its clients’ projects without realising it.
Why does project margin vary by phase?
Early phases like concept often run to budget, while documentation tends to overrun as scope and detail expand, and contract administration can drag on after the fee is spent. The blended project margin hides this, so a project can look profitable while losing money in its final phases. Margin by phase surfaces the drift in time to act.
Is this the same as construction CFO work?
It overlaps. A&E practices share work-in-progress and stage-billing dynamics with construction, but their cost base is professional salaries rather than trades and materials. A virtual CFO draws on both the professional services and construction approaches, which is why A&E sits between the two.
Do you handle our project accounting software?
A virtual CFO works with the data your project and accounting systems produce; setting up or running that software day to day is a bookkeeping and practice-management function, not CFO work. The CFO layer sits on top: turning the data into a cash model, WIP tracking, and phase margin that inform decisions.
We are an $7M practice across two offices. Full-time CFO or virtual?
At that size, usually virtual and project-based. The need is specific tools built well, not a full-time executive. A fixed-scope engagement builds the cash model and WIP reporting and hands them over. A full-time finance director tends to make sense past roughly $25M in fees or where multiple offices need daily finance leadership.
How much does it cost?
The 90-Day Number is a fixed $17,850 plus GST for one named deliverable by day 90, no retainer. The usual Australian alternative is an open-ended monthly retainer at $3,000 to $8,000; the project-based model is deliberately different and uncommon in this market.
Sydney Virtual CFO is a Sydney-based virtual CFO service for founders running $2M to $15M businesses across SaaS, ecommerce, professional services, construction, and other low-volume, high-value industries. We deliver fixed-scope CFO engagements with a named deliverable on day 90: a 13-week cashflow forecast, a fundraise-ready financial model, a unit economics build, or a board reporting pack you can run on your own.
Our front-door product, the 90-Day Number, is fixed scope at $17,850 plus GST. We are one of the few project-based virtual CFOs in Australia, in a market built almost entirely on monthly retainers. No retainers without a deliverable. No 80-page reports. No theatre.
Visit Sydney Virtual CFO | The 90-Day Number | Book a Call
This content is general information only, written for Australian founders running businesses in the $2M to $15M revenue range. It does not constitute tax, financial product, investment, or legal advice and should not be relied on as such. The work referenced is led by a Chartered Accountant (CA ANZ), but Sydney Virtual CFO is not a licensed tax agent, not a licensed financial adviser, and not authorised to provide personal financial advice. Tax obligations, accounting treatments, fundraise terms, and statutory requirements depend on your individual circumstances. For advice specific to your business, contact the team directly or consult a registered tax agent, licensed financial adviser, or qualified lawyer. Information was current at the time of publication and may change without notice. We review and update guides periodically.
