The Accounting Problem Most A/E Firms Don't Know They Have

A/E firm accounting has a setup problem, not a software problem.

QuickBooks works fine for most businesses. So does Xero. The issue is not the tool — it is that nobody configured it for the specific way architecture and engineering firms earn money, structure costs, and measure profitability.

The default setup most firms are running:

• All payroll in one expense account — direct labor and overhead labor indistinguishable
• Consultant fees handled inconsistently — sometimes in COGS, sometimes in expenses, sometimes both
• Revenue measured at the gross level — including consultant pass-throughs that were never the firm's money to keep
• No phase-level job costing — project totals visible but phase budgets invisible
• Overhead factor unknown — because the calculation requires a payroll separation, the books were never configured to support

Each of these is individually fixable. Together they create a picture of firm performance that is consistently less accurate than principals believe — and consistently more optimistic than reality.

The firms that understand their numbers aren't using different software. They structured their books correctly from the start — or corrected the structure when they understood what was missing.

The Correct P&L Structure for an A/E Firm

The foundation of A/E firm accounting is a P&L structure that separates the right things in the right order. Here is what that looks like — and why each piece matters.

Income

Design services and other income flow here as gross revenue. This is the top line — what was billed to clients in total, before any deductions.

Cost of Goods Sold

Two items belong in COGS for an A/E firm: consultant fees and direct project expenses. Direct project expenses include permit fees paid on the client's behalf, printing, project-specific travel, and other costs billed directly to clients.

Direct labor does not belong in COGS.

This is the most common structural error in A/E firm accounting — and the most consequential. When direct labor sits in COGS, the gross profit line no longer represents net revenue. It becomes a distorted number that requires manual adjustment before any meaningful financial analysis can be done.

Gross Profit — Net Revenue

When COGS contains only consultants and direct expenses, gross profit equals net revenue — the amount the firm actually retains after paying for pass-through costs. This is the correct denominator for every profitability ratio in A/E firm financial management.

A firm that bills $1,038,988 in gross revenue and carries $34,850 in COGS retains $1,004,138 in net revenue. Every operating expense — including all labor — is deducted from that $1,004,138. That is the firm's true financial base, and measuring profitability against it rather than gross revenue is what makes performance analysis meaningful.

Expenses

All operating costs sit below gross profit as expenses. Two payroll accounts are essential and must be separate:

• Payroll Direct — compensation for hours charged to client projects. This is direct labor.
• Payroll Overhead — compensation for all other firm time. Administration, marketing, management, internal meetings, training, and business development.

All other overhead costs — rent, insurance, subscriptions, equipment, professional development, bank charges — sit alongside payroll as expense line items.

Net Income

What remains after all expenses? The firm's operating profit is expressed as a dollar amount and as a percentage of net revenue — the most meaningful profitability metric in A/E practice.

→ Read: Chart of Accounts for Architecture and Engineering Firms

→ Read: Net Revenue vs Gross Revenue for A/E Firms

Why Payroll Separation Is the Most Important Accounting Decision an A/E Firm Makes

The overhead factor — the single most important number in A/E firm financial management — cannot be calculated without separating direct labor from overhead labor in the books.

Most A/E firms cannot calculate their overhead factor. Not because it is complicated. Because their payroll sits in one account and the calculation requires two distinct numbers that the books were never configured to produce.

What payroll separation means in practice

Every employee at an A/E firm spends time in two categories: time charged to client projects (direct labor) and time spent on everything else (overhead labor). The dollar value of each category needs to be visible as a separate line in the P&L.

This does not require a different accounting system. It requires two payroll expense accounts in QuickBooks or Xero — Payroll Direct and Payroll Overhead — and a project management system that tells the accounting system how many dollars to allocate to each.

When that separation exists, the P&L shows the firm exactly what it needs to calculate the overhead factor.

What the separation makes visible

A firm with $553,000 in total payroll — split into $310,000 direct and $243,000 overhead — has information it can act on. It knows what percentage of labor time is going toward billable work. It knows the overhead burden per dollar of direct labor. It knows whether its staffing mix is trending in a direction that will compress margins.

A firm with $553,000 in a single payroll account knows only how much it spent on labor. That number answers no useful management question.

→ Read: How to Separate Direct and Indirect Labor in QuickBooks

How to Calculate Your Overhead Factor — With Real Numbers

The overhead factor measures the amount of overhead the firm incurs per dollar of direct labor. It is the cost multiplier that underlies every billing rate, every fee proposal, and every profitability assessment the firm makes.

The formula:

Total Expenses minus Direct Labor equals Overhead. Overhead divided by Direct Labor equals the Overhead Factor.

A real example:

A firm's trailing 12-month P&L shows:

• Total expenses: $809,625
• Direct labor (Payroll Direct): $310,000
• Overhead: $499,625
• Overhead factor: $499,625 ÷ $310,000 = 1.61

That 1.61 means: for every dollar of direct labor this firm spends, it carries $1.61 in overhead. Every project gets loaded accordingly. A staff member earning $47/hour in direct labor cost carries $75.67/hour in total cost to the firm — before any profit margin is added.

Why the calculation requires a trailing 12-month P&L

A single month's P&L produces a distorted overhead factor. Some overhead expenses are seasonal or irregular — insurance renewals, annual subscriptions, tax payments, and bonuses. A trailing 12-month figure smooths those variations and produces a number that reflects the firm's true cost structure across a full operating cycle.

How often to recalculate

At a minimum, annually. More frequently, when significant cost changes occur, such as a new hire, a lease renewal, or a significant change in benefit costs. An overhead factor calculated eighteen months ago and never updated is leading to proposals that may be mispriced against a cost structure that no longer exists.

→ Read: How to Calculate Your Overhead Factor

→ Read: Overhead Factor Explained: The Missing Link Between Busy and Profitable

How to Use the Overhead Factor

Once the overhead factor is known, it becomes the analytical lens through which two critical financial questions are answered: are we making money on this work, and are we pricing future work correctly?

Using the overhead factor to measure profitability

The overhead factor, combined with direct labor costs and net revenue, tells a firm whether it is actually making money, not just billing it.

The net multiplier — the ratio of net revenue to direct labor — is the standard benchmark of profitability for A/E firms. At a 3.0 multiplier, a firm bills $3 for every $1 of direct labor. With an overhead factor of 1.61, a 3.0 multiplier produces a healthy operating margin. Below 2.65, the firm is approaching break-even. The overhead factor determines where the break-even line sits — and it shifts when overhead changes.

A firm that knows its overhead factor can look at any project and calculate the multiplier it actually achieved — connecting the accounting to project-level financial performance in a way that gross revenue reporting never can.

Using the overhead factor to price projects

The overhead factor establishes the cost floor for every fee the firm sets.

The formula: Raw Labor Cost × (1 + Overhead Factor) × Target Multiplier = Minimum Billing Rate

For a staff member with a raw labor cost of $47/hour and an overhead factor of 1.61: $47 × 2.61 = $122.67 fully loaded cost per hour $47 × 3.0 = $141.00 minimum billing rate

That $141.00 is the floor — the rate below which the firm cannot deliver that person's work at the target multiplier. The market rate determines where the ceiling is. The overhead factor determines where the floor is. Both numbers are essential for pricing with confidence.

→ Read: How to Use Your Overhead Factor to Calculate Net Profits

→ Read: How to Use Your Overhead Factor in Project Pricing

→ Read: Calculate True Project Cost with Your Overhead Factor

Why QuickBooks Fails A/E Firms — and What to Do About It

QuickBooks is not a bad accounting system. It is a generic accounting system that was not designed for project-based professional services work. The gaps it creates for A/E firms are predictable and consistent.

The payroll problem

QuickBooks defaults to a single payroll expense account. Every payroll dollar — direct labor and overhead labor — lands in the same bucket. Without a manual workaround, the overhead factor cannot be calculated because the two numbers required for the formula are permanently combined.

The fix is structural: create two payroll expense accounts — Payroll Direct and Payroll Overhead — and populate them with the correct figures each period. Getting those figures requires a project management system that tracks which payroll dollars were charged to client projects and which were not.

The job costing problem

QuickBooks job costing tracks costs at the project level. A/E firms need phase-level visibility — knowing not just what a project cost in total but what each phase cost relative to its fee allocation. Phase-level job costing requires a project management system that connects time entries to phases and passes that data to the accounting system in a structured way.

The COGS configuration problem

QuickBooks will accept any chart of accounts structure. It will not tell you whether your structure is correct for your business type. Most A/E firms were set up with direct labor in COGS — a configuration that is conventional for product businesses and wrong for A/E firms. Correcting it requires understanding why it matters, which requires understanding the net revenue calculation — which most generic accountants have never been asked to explain in an A/E context.

→ Read: Why QuickBooks Fails Architecture and Engineering Firms

→ Read: How to Configure QuickBooks for an A/E Firm

What BQE Core and Monograph Get Wrong

BQE Core — the inflated labor rate workaround

BQE Core has internal accounting but cannot calculate an overhead factor using a proper overhead factor methodology. Its suggested workaround is to inflate employee labor rates to incorporate overhead — embedding the overhead cost into the labor cost rather than tracking it separately.

The consequences of this approach are significant:

Direct labor costs become invisible as real numbers. The labor rate in the system is no longer what the firm actually pays — it is a grossed-up figure that includes an approximation of overhead. The actual payroll cost is no longer visible in the system.

The overhead factor becomes uncalculable as a meaningful ratio. If overhead is baked into the labor rate, there is no longer a separate overhead figure to divide by direct labor. The overhead factor cannot be derived from the system's data.

Project-to-project comparability breaks. When labor costs embedded in each project are not based on actual payroll figures, comparing project performance across the portfolio becomes unreliable. A project that ran lean on hours but carried heavy overhead looks identical to one that didn't.

This is a workaround, not a methodology. It solves the symptom — getting some overhead recovery into project costs — by eliminating the measurement that would tell the firm whether its overhead recovery is accurate.

Monograph — no accounting, no path to fix it

Monograph has no internal accounting. It integrates with QuickBooks Online and inherits all of QuickBooks' limitations — including the inability to calculate an overhead factor without correct setup that Monograph itself cannot guide, enforce, or provide data for. A Monograph firm that wants to calculate its overhead factor must solve the QuickBooks setup problem entirely on its own, without any data from its project management system to inform the payroll separation. And Monograph does not utilize the overhead factor within the application. So there are no net profit calculations.

→ See: BaseBuilders vs BQE Core

→ See: BaseBuilders vs Monograph

BaseBuilders takes a different approach to the accounting gap.

Rather than replacing the firm's accounting software — which would require migrating years of financial history and retraining staff on a new system — BaseBuilders works alongside QuickBooks or Xero as the source of A/E-specific financial intelligence, the accounting package was never designed to provide.

The core capability that makes this possible: BaseBuilders runs a payroll separation report that shows exactly how many dollars of payroll were charged to client projects (direct labor) and how many were charged to overhead activities (indirect labor). That report provides the firm with the two numbers required for the overhead factor calculation—and the exact journal entry amounts needed to split payroll correctly in QuickBooks or Xero.

But the payroll report is just the starting point.

What makes BaseBuilders different from every other platform in this space is what it does with those numbers inside the project. QuickBooks records what was spent. BaseBuilders allocates overhead to every hour of direct labor logged to every active project — in real time, as time entries are made. That allocation is what produces true project cost. And true project cost is what makes project-level profitability visible while there is still time to act on it.

No other A/E platform does this using an actual overhead factor derived from the firm's real P&L. BQE Core approximates it by inflating labor rates — losing direct labor visibility in the process. Monograph doesn't touch it. Generic project management tools don't know the concept exists.

At any moment, a principal using BaseBuilders can answer:

• What is our current overhead factor based on trailing 12-month data?
• What are the minimum billing rates for each staff member at that overhead factor and our target multiplier?
• Which active projects are currently performing above and below the target multiplier?
• What is our firm-level net multiplier for the year to date?
• How much of this month's payroll was direct labor versus overhead — and what does that tell us about utilization?

These are not complicated questions. They just require a system built to answer them — connected to an accounting package set up correctly to feed it.

A/E Accounting Deep Dives

These articles break down each component of correct A/E firm accounting — with step-by-step guidance and real numbers throughout.

Why QuickBooks Fails Architecture and Engineering Firms
‍The specific gaps QuickBooks creates for A/E firms — and what to do about each one.

How to Separate Direct and Indirect Labor in QuickBooks
‍Step-by-step: how to create the payroll accounts, populate them correctly, and make the overhead factor calculation possible.

How to Calculate Your Overhead Factor
‍The methodology, the formula, real P&L numbers, and how to recalculate when costs change.

Chart of Accounts for Architecture and Engineering Firms
‍The correct structure — what belongs in COGS, what belongs in expenses, and why the difference matters for every downstream calculation.

Net Revenue vs Gross Revenue for A/E Firms
‍Why gross revenue distorts profitability measurement and how net revenue gives you a number you can actually manage against.

How to Use Your Overhead Factor to Calculate Net Profits
‍How the overhead factor connects to net multiplier, operating profit, and whether the firm is actually making money on its work.

How to Use Your Overhead Factor in Project Pricing
‍How to build billing rates and fee proposals from your real cost structure — so every number starts from a defensible floor.

How to Configure QuickBooks for an A/E Firm
‍The complete setup guide — chart of accounts, payroll accounts, COGS configuration, and the journal entry that makes overhead factor calculation possible.

How A/E Accounting Connects to the Rest of the Firm

Accounting is not a back-office function in an A/E firm. It is the foundation on which every financial decision depends.

Proposals and fees — billing rates and fee floors are calculated from the overhead factor. If the overhead factor is wrong because the books aren't structured correctly, every proposal built from it is mispriced. A firm quoting fees from an outdated or incorrectly calculated overhead factor is either leaving money on the table or pricing work it cannot deliver profitably.

Financial metrics — net multiplier, operating profit, and realization rate are all calculated against net revenue. If net revenue is distorted by incorrect COGS configuration, every KPI built on it is distorted . The metrics look right. They are measuring the wrong thingas well.

Project profitability — phase-level profitability requires a project management system that tracks time against phases, applies overhead to each hour of direct labor, and calculates true project cost in real time. The accounting system — even when correctly configured — cannot do this on its own. QuickBooks records what was spent. It does not allocate overhead to individual projects, calculate earned value by phase, or tell a principal whether a project is profitable while it is still active. That is what BaseBuilders does. The accounting structure determines what historical reporting is possible. BaseBuilders determines what real-time project intelligence is possible — and the two need to work together for either to produce accurate numbers.

Billing and collections — the cash position a firm sees in its accounting system is only as accurate as the liability tracking behind it. Firms with significant subconsultant spend need accounting structures that reflect accrued obligations—not just what has been invoiced and paid. An accounting system that records consultant liability only when a pay request arrives consistently overstates available cash.

Overhead management — the overhead factor is only useful if it is recalculated when costs change. A firm that calculates overhead once a year and holds it constant is making pricing decisions based on a cost structure that may have shifted significantly. Rent increases, new hires, benefit changes, and equipment costs all affect overhead. The firms that price most accurately treat the overhead factor as a living number—updated regularly, incorporated into every fee calculation, and reviewed whenever a significant cost event occurs.

When the accounting foundation is correct, every other financial system the firm runs produces more accurate outputs. When it isn't, the distortions compound quietly across every report, every decision, and every year.