Track professional services project costs and profit

Direct answer

For this review, explain project costing as labor cost, non-billable support, write-offs, senior review time, and project margin.

Why this question comes up

Firms lose margin in free-but-necessary work that is not tracked or billed. This guide turns that concern into a review that can be repeated with a defined period, consistent inputs, and a visible trail back to the records.

Records to gather

• Time by person and project with cost rates
• Project fees, including approved scope changes
• Expenses and pass-through costs, billable and non-billable
• Original estimate by workstream against actual
• Realisation: billed versus worked versus collected

Review workflow

1. Use cost rate, not charge rate, for cost. Cost is salary plus employment burden divided by productive hours. Charge rate belongs on the revenue side only.
2. Reflect the fee model in the analysis. On a fixed fee, hours above estimate erode margin directly. On time and materials, they are billable. The same overrun means opposite things.
3. Attribute the right seniority mix. A project delivered by more senior people than priced can be on budget in hours and over budget in cost.
4. Include non-billable delivery time. Internal reviews, quality checks, and rework are real project cost.
5. Carry realisation through to collection. Billed is not collected. A project is not profitable until the cash arrives.
6. Compare by project type. Systematic loss on one engagement type is a pricing problem, not a delivery problem, and needs a different fix.

What a useful answer should include

• Project margin in currency and percent, at cost rates
• Fee model stated, since it changes how overrun is read
• Seniority mix delivered against the mix priced
• Non-billable delivery time included
• Realisation carried through to cash collected
• Margin patterns by project type, not just by project

Common failure modes

• Costing at charge rate. It produces a margin number with no meaning.
• Ignoring seniority mix. On-budget hours delivered by expensive people is still over budget.
• Stopping at invoicing. Collection is part of profitability.
• Treating fixed-fee overrun as a delivery failure. It is often an estimating or scoping failure, and blaming delivery fixes nothing.

Community context

The linked community posts show why people search for this topic and which parts create confusion in practice. They are anecdotal. Use the reference sources and your organization’s policies for accounting treatment, tax, compliance, and final decisions.