When Construction Margins are Won — or Lost

Last fall, a mid-Atlantic contractor won a mid-size commercial redevelopment. The numbers worked. Steel, concrete and subcontractors were all locked in. Then, a few months into the job, tariff-driven increases on steel pushed material costs past what the estimate had modeled. The bid hadn’t been wrong. The environment changed, and the contract structure had no way to absorb it. The project that had been penciled out at a 6% margin was tracking closer to 3%

This is not an isolated case. Heading into 2026, input costs rose approximately 7% (annualized), with tariff-sensitive materials — steel, aluminum, copper — leading the increase. More than half of contractors surveyed by the Associated General Contractors flag materials costs as their top business concern.

But the harder part of the problem isn’t the magnitude of the increase. It’s the timing and the systems that sit between the field and the financials.

When the Model Becomes the Risk

Fixed-price contracts carry risk when costs shift midstream. Most estimating tools were built for gradual inflation, not policy-driven swings that can move double digits within a single project cycle. The disconnect shows up quickly: projects are priced in one cost environment and delivered in another.

What determines how quickly a firm can respond — and how much of that margin it preserves — is whether it can see what’s happening in time to act. In many firms, that visibility breaks down.

Project managers are working from field data that updates daily. Finance teams are working from systems that close monthly. Forecasts sit somewhere in between. By the time the numbers align, the cost overruns are already locked in.

The Visibility Gap

Most construction companies are not short on information. They are short on alignment.

Field logs, timecards, equipment usage, subcontractor costs, billing progress — these all exist. But they are often captured in different systems, at different intervals and with different definitions. Teams see different versions of the same project — progress, cost, variance — and none of them fully connect.

When that happens, forecasting becomes an exercise in reconciliation rather than decision-making. The firms that are managing margin more effectively have closed that gap. They treat reporting as an operating system, not an output. That starts with three disciplines:

1. Clarity. Everyone knows what is being measured and why. Cost codes are standardized. Metrics are defined in a way that ensures consistent use across projects.
2. Consistency. Information is captured and reviewed on a set cadence. Field updates flow daily. Project reviews happen weekly. Financial summaries follow a predictable structure.
3. Connection. Field activity, job cost systems and financial reporting are integrated. Data moves between them without manual translation, and discrepancies surface early.

When those three conditions are in place, reporting stops being retrospective. It becomes directional. Teams can see where a project is heading while there is still time to adjust.

The Levers that Move Margin

Once visibility is in place, other levers become usable. Technology plays a role here, but not as a standalone solution. The value comes from how systems work together — accounting, payroll, fleet management, estimating and budgeting aligned in a way that reduces lag and removes duplicate interpretation. The goal is not more data. There are fewer gaps.

From there, financial and tax strategies can be applied with intent. This includes the following considerations:

• How income is recognized over the life of a project determines when revenue is reported and when tax liability follows. When costs shift mid-project, that timing becomes more consequential.
• The treatment of rising material costs — through cost of goods, inventory or other methods — shapes both reported profitability and tax exposure. Those differences become more visible as inputs move.
• Project structure — joint ventures, partnerships and multi-entity arrangements — shapes how costs and returns are distributed over a project’s life. In more complex operations, these structures can be set deliberately.
• Estimated tax payments and available deductions affect liquidity and after-tax results, particularly when margins tighten.

None of these tools are new. Their impact depends on when they’re used and the quality of the data behind them. They are most effective when applied early, using current field data.

The Exit Signal

For some firms, margin pressure is leading to a different kind of decision.

Construction M&A activity expanded in 2025 as more owners reassessed whether the current environment supported long-term independence. For first- and second-generation businesses in particular, the question is no longer abstract. But an exit is shaped by the same conditions that affect project performance.

Firms with limited visibility into their own operations tend to make that decision later and with fewer options. Those with stronger reporting disciplines see the signals earlier. They have more time to evaluate structure, address inefficiencies and position the business on more favorable terms. The outcome reflects how well the business has been understood and managed over time.

Plan for Movement, Not Stability

The conditions driving margin pressure are not likely to ease in the near term. Tariff policy continues to shift. Infrastructure demand is holding volume steady while costs move unpredictably. The gap between when work is priced and when it is delivered continues to create real exposure.

What matters now is how firms manage through that environment. The contractors holding their margins have a clearer line of sight into their projects as they unfold. Field activity feeds directly into forecasts, so they reflect what is happening on the job. Structure and tax decisions are considered earlier, when they can still influence outcomes.

Thus, margin takes shape over the life of the project. It reflects what a firm can see in time and how it acts on it.

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Melissa O'Shea Melissa O’Shea is a partner in SAX’s construction practice, where she advises contractors on accounting, financial management and tax strategy. She is a member of the NJCPA.