Most professional services firms struggle with one simple question: is this project profitable?

The problem is not revenue tracking as most teams know how much the client will pay. The real problem is understanding what the project actually costs while it is running.

Expenses are often tracked in separate systems or spreadsheets, while resource allocations live in planning tools. Time entries are recorded somewhere else andfFinancial reporting happens later in accounting software.

Because of this fragmentation, project managers rarely have a complete picture of:

• Planned project costs
• Actual costs incurred
• How those costs affect project margin

Proper project expense management brings these pieces together. When expenses, time entries, allocations, and budgets live in the same system, teams can finally compare planned costs vs actual costs in real time. That is what enables reliable project margin tracking.

Why project expense management matters

Expenses are one of the most common reasons project margins disappear, especially in the types of businesses whose projects don't onlny consist of labor costs.

Consider a typical consulting engagement:

• Travel costs for on-site workshops
• Software licenses used during delivery
• External contractors or subcontractors
• Equipment or infrastructure costs

These expenses may seem small individually, but over time they can significantly impact profitability.

If those costs are tracked separately from the project itself, project managers cannot see their financial impact until the project ends.

With integrated expense management, teams can immediately see:

• Total project expenses
• Which expenses are billable to the client
• Which costs are absorbed internally
• How expenses affect overall project margin

This visibility allows services teams to control costs before they become a problem.

Project budgets define the financial plan

Every project starts with a budget.

A budget represents the expected revenue for the project. In fixed price engagements, it usually equals the contract value.

Budgets can also be structured into phases, each with its own amount and time range.

For example:

Tracking budget phases allows project managers to monitor financial progress as the project evolves.

Operating Base also allows teams to track budget progress entries, which record how revenue recognition progresses over time.

Planned costs come from resource allocations

Before a project starts, teams plan the work using resource allocations.

This defines:

• Who will work on the project
• How many hours they are expected to spend
• The cost rate of each person

From this information, the system can calculate planned project costs.

Example:

Total planned staffing cost = $18,000

This planned cost becomes the baseline for project profitability.

Actual costs come from time entries and expenses

As the project progresses, actual costs begin to replace the planned estimates.

There are two main sources of actual costs:

1. Time entries

Actual hours logged by team members multiplied by their cost rate.

2. Expenses

Out-of-pocket costs logged against the project.

Each expense contains one or more line items with:

• Cost per unit
• Quantity
• Description
• Billable-to-client flag

Example expense:

Total expense = $720

Expenses can be marked as either billable or non-billable.

Billable vs non-billable expenses

Understanding this difference is critical for project profitability.

Billable expenses

Costs that are passed through to the client. These increase both cost and revenue.

Examples include:

• Travel billed to the client
• Subcontractor costs passed through
• Project-specific licenses

Non-billable expenses

Costs that the services firm absorbs internally.

Examples include:

• Internal tools
• Unrecoverable travel
• Equipment costs

Non-billable expenses directly reduce project margin.

For example:

If a project budget is $100,000 and the team logs $15,000 in non-billable expenses, then 15 percent of the project budget is already consumed before accounting for staff costs.

Comparing planned vs actual costs

The real power of integrated expense management is the ability to compare planned vs actual costs.

Project managers can see:

• Planned staffing costs from allocations
• Actual staffing costs from time entries
• Logged project expenses
• Total costs relative to the project budget

This allows teams to quickly answer questions such as:

• Are we spending more hours than planned?
• Are expenses exceeding expectations?
• Is the project still profitable?

Instead of discovering overruns at the end of the project, teams can respond early.

Real-time project margin

Once revenue and costs are connected, the system can calculate project margin automatically.

Gross profit is calculated as:

Gross Profit = Revenue − Total Costs

Gross Margin Percentage = Gross Profit / Revenue

Revenue comes from either:

• Project budgets (fixed price projects)
• Allocation revenue (time and materials projects)

Costs include:

• Staffing costs from time entries
• Logged project expenses

This provides a real-time view of project profitability.

Scenario planning with confirmed and tentative allocations

Project plans often change during delivery.

Operating Base supports this by separating confirmed and tentative allocations.

The financial dashboard calculates margin across three scenarios:

Confirmed only

Shows profitability based only on confirmed staffing.

Tentative only

Shows the potential impact of proposed allocations.

Including tentative

Provides the full projected margin if all planned staffing is confirmed.

This allows project managers to understand best and worst case scenarios before staffing decisions are finalized.

Project financials in one view

The project financials dashboard combines all of this information into a single table.

Project managers can see:

• Planned allocation hours
• Revenue
• Actual hours logged
• Total costs
• Gross margin in dollars
• Gross margin percentage

An expenses section also shows:

• Total billable expenses
• Total non-billable expenses
• Expense totals as a percentage of the project budget

This gives teams a clear picture of how expenses and staffing affect profitability.

Multi-currency support for global projects

Many professional services firms deliver projects internationally.

Expenses can be logged in different currencies while all financial calculations are converted to the project's base currency.

This ensures margin calculations remain accurate without manual currency conversions.

Why this matters for professional services firms

Without integrated expense tracking, many professional services firms manage projects using:

• Spreadsheets for expenses
• Separate tools for time tracking
• Resource planning tools
• Accounting systems for financial reporting

The result is fragmented visibility.

By the time finance closes the books, the project is already complete.

Integrated project expense management solves this problem by connecting:

• Budgets
• Allocations
• Time entries
• Expenses
• Margin calculations

This allows consultancies, agencies, and other services teams to see their real project profitability while the work is still happening.

That visibility allows teams to protect margins instead of explaining them after the fact.

FAQ

Why is project expense management important for professional services firms?

Project expense management helps firms track costs as work happens, not after the project ends. This makes it easier to protect margins, manage budgets, and avoid cost overruns.

What is the difference between planned and actual project costs?

Planned costs come from resource allocations and expected staffing. Actual costs come from logged time entries and project expenses such as travel, software, or subcontractors.

What are billable and non-billable project expenses?

Billable expenses are costs that can be passed on to the client. Non-billable expenses are absorbed by the firm and reduce project margin.

How do project expenses affect project margin?

Project expenses increase total project cost. Billable expenses may be offset by client revenue, while non-billable expenses directly reduce gross margin.

Why track project expenses in the same tool as budgets, time, and allocations?

When expenses, budgets, time, and allocations are tracked together, teams can compare planned vs actual costs in real time and get a more accurate view of project profitability.