Accounting for Architects Who Want to Know Project Profit Before the Project Ends

Architecture sits in an awkward accounting position: project timelines like a construction company, labor economics like a law firm, and pass-through money like a general contractor. A single project can run two or three years across distinct contract phases, each with its own fee, budget, and staffing. Revenue is earned continuously as hours go in, but invoiced in monthly progress bills or phase completions that drift away from what was actually earned. Meanwhile structural, MEP, and civil consultants often bill through your contract, inflating apparent revenue with dollars that were never yours.

Generic bookkeeping handles none of this. It records invoices as revenue when sent, lumps consultant fees into income and expense wherever they land, and produces a P&L that cannot answer the three questions that run a design firm: which projects are making money, how much finished work has not been billed yet, and whether the staff is billable enough to carry the overhead. This page walks through the structure that answers all three, and its close cousin for engineering practices lives on our accounting for engineering firms page.

The single most important structural decision in a design firm's books is the split between direct (project) costs and indirect (overhead) costs, because every firm metric in section 6 is computed from that split. These are the accounts we set up for architecture clients and why each exists:

The generic starting point for any small business chart of accounts lives here; the version above adds the two accounts most firms are missing entirely: Unbilled Revenue and Billings in Excess. Without them, the balance sheet cannot hold a WIP position, and the P&L is forced to pretend invoicing equals earning.

Most architecture contracts break the fee across the classic phases: schematic design, design development, construction documents, bidding, and construction administration. The accounting should mirror the contract: each phase gets its own fee allocation and labor budget, hours are charged to the phase they serve, and phase profitability is visible while the phase is still open. A project that looks fine in total can be a CD-phase disaster subsidized by an efficient SD phase, and only phase-level books can see it.

WIP is the bridge between doing the work and billing it. Every open project sits in one of two positions at month-end: underbilled (work earned exceeds invoices sent, an asset that should turn into a bill immediately) or overbilled (invoices exceed work earned, a liability of future labor already paid for). Both are normal; being unaware of which is the problem.

Percentage of completion answers one question per project each month: how much of the fee have we earned so far? The common method for design firms is cost-to-cost on direct labor: earned revenue equals the phase fee times the share of budgeted labor spent, checked against a project manager's judgment of true progress. When the labor spent says 80% but the drawing set is honestly 60% done, the honest number wins, and the gap is an early warning of a project heading over budget.

One distinction saves a lot of confusion: the tax rules that force percentage of completion target long-term contracts to build or construct property. Design services are generally outside that mandate, and most firms under the IRS gross receipts threshold ($32 million average annual receipts for 2026) file on the cash method, which usually defers tax. So the healthy setup is two views from one ledger: cash-basis for the return, percentage of completion for running the firm. You do not have to choose, and choosing only one is how firms end up either overpaying tax or flying blind.

When the architect holds the prime contract, structural, MEP, civil, and specialty consultants bill through the firm: their fees ride on your invoices and exit through your payables. Booked carelessly, this inflates revenue and distorts every ratio. A firm invoicing $2 million with $500,000 of consultant pass-throughs is a $1.5 million design practice, and utilization targets, revenue per employee, and any eventual valuation should be computed on the $1.5 million, not the $2 million.

The bookkeeping is simple once the accounts exist: consultant billings go to pass-through revenue, consultant invoices to consultant expense, matched by project, with any markup you charge for carrying the coordination risk visible as the difference. The monthly close checks that the two sides reconcile by project, which also catches the expensive failure mode: a consultant invoice that arrives, gets paid, and never gets rebilled to the client. On a busy CD phase, unrebilled consultant costs are among the most common silent losses in firm bookkeeping.

Design firm economics compress into a handful of ratios, all computed from the direct-versus-indirect structure built in section 2. These are the six we put on the monthly package:

The relationships matter more than any single value. If the overhead rate says break-even is a 2.6 multiplier and projects are being proposed at effective multipliers below that, the firm is buying work with its own payroll, and no amount of utilization fixes underpriced fees. Conversely, healthy multipliers with sagging utilization mean the problem is workload, not pricing. The monthly package exists so these conversations happen with current numbers, while the levers still move.

The monthly cadence for an architecture client: transactions categorized and project-tagged weekly; time data pulled from the time-tracking or project management system; consultant invoices matched to rebillings by project. After month-end: all bank, credit card, and loan accounts reconciled; earned revenue computed per project and phase; the WIP schedule updated (unbilled and overbilled, by project, with aging); consultant pass-throughs reconciled; and the package delivered by the 20th.

The package is the three statements (Profit and Loss, Balance Sheet, Cash Flow statement) plus the firm layer: project profitability with percent complete, the WIP schedule, and the KPI page. The stack is QuickBooks Online as the ledger, your existing project management and timesheet tool as the hours source, and a consistent project and phase naming convention connecting them. Firms already on a dedicated A&E platform keep it; the deliverable is a ledger that agrees with it, not a migration. If the books are behind, catch-up bookkeeping comes first, and the full scope of the ongoing service lives on the outsourced bookkeeping page.

Architecture carries better tax facts than most professions, and books built by the firm that files the return actually put them to work. Architects are explicitly excluded from the specified service business limitation on the Section 199A QBI deduction, so the 20% deduction generally survives at income levels where lawyers and consultants lose it, subject to the wage and capital limits. Qualifying design R&D can support the research credit, and domestic research costs are again fully deductible in the year incurred for tax years beginning after 2024. Add cash-method availability, entity and owner-compensation choices, and retirement plan design at principal income levels, and the annual planning agenda is substantial. That work runs through our small business tax planning service, fed directly by these books.

This service is a fit if:

• You run an architecture or design practice with roughly 3 to 50 people or $500K to $10M in fees
• You want project and phase profitability during the project, not after it
• Consultants bill through your contracts and the pass-through layer needs to be airtight
• You want utilization, multiplier, and WIP reporting on a monthly rhythm
• You want bookkeeping and tax under one roof so QBI, R&D, and entity decisions run on live data

Solo practitioners billing a handful of residential projects may not need the full project accounting layer yet; our small business accounting service is the right starting point, and this structure can be added as the firm grows. For a quick price range either way, the bookkeeping cost calculator takes about a minute.