Material costs for construction projects have risen approximately 6 percent since the start of 2026, driven largely by tariffs on steel, aluminum, and copper.

For contractors who are currently bidding work, that number is more than a headline. It is a margin problem.

Here is what licensed contractors need to understand about how tariffs are affecting bids right now, and the practical steps you can take to protect your business.

What the Tariff Picture Looks Like in 2026

Tariffs introduced in early 2025 and held through 2026 include 50 percent duties on steel and aluminum products and 25 percent on derivatives that are substantially composed of those metals. Electrical grid equipment and industrial components carry a 15 percent tariff.

Construction input prices ran at a 12.6 percent annualized rate in early 2026, the fastest pace since 2022, according to Construction Dive.

The materials most affected on typical residential and light commercial projects are structural steel, copper wiring, conduit, aluminum framing, and HVAC equipment. A project bid in January may carry materially different actual costs by the time it breaks ground in August.

The Core Problem: Fixed-Price Bids in a Rising-Cost Market

Most residential and light commercial contractors are accustomed to submitting fixed-price bids. The owner wants a number; you give them one. In a stable materials market, that works. In a 12 percent annualized input inflation environment, it creates serious exposure.

If you signed a contract in March at a fixed price and steel costs have climbed 8 percent since you priced the job, that difference comes out of your margin. For a smaller contractor running on 10 to 12 percent net margins, a mid-job steel spike can wipe out profit entirely.

The problem is compounded for contractors carrying multiple open bids. If you have five bids outstanding and material costs move between submission and award, every one of those bids carries the same risk.

Contract Protections: What to Add Before You Sign

The most direct protection is a price escalation clause. This is a contract provision that allows the contract price to adjust if specified material costs move beyond a set threshold between signing and delivery.

The ConsensusDocs 200.1 Material Price Escalation Amendment is a widely used industry form that structures this clearly. It ties price adjustments to published cost indices, which removes ambiguity about how and when escalation applies. If your current contracts do not include language like this, that is the first thing to fix.

Other practical protections include:

• Shorter bid validity windows (10 to 14 days on metal-heavy scopes)
• Material lock-in at contract execution
• Allowance-based line items for high-exposure cost categories

Supplier Relationships Matter More Now

In a tariff-driven cost environment, contractors with strong supplier relationships have a significant advantage. Suppliers are prioritizing customers who buy consistently, pay on time, and communicate early about upcoming projects.

If you have not had a direct conversation with your steel fabricator or electrical distributor about how tariffs are affecting their pricing, have that conversation now. Some suppliers are offering quarterly pricing agreements or early-buy discounts that are not advertised publicly.

Maintaining at least two qualified suppliers for critical scopes also reduces the risk of a single-source shortage driving you to a spot market price at the worst possible moment.

Domestic Material Alternatives

On some project types, design flexibility allows substitution of tariff-affected materials. Engineered wood and concrete systems can replace structural steel in certain residential and light commercial applications where code allows. Domestically produced metal systems carry lower tariff exposure than imported equivalents.

The Licensing Connection

The Business and Finance section of most state contractor license exams covers contract law, change order management, and estimating principles. CTC's exam prep courses cover the Business and Finance topics that show up most frequently on state licensing exams, including contract formation, project cost controls, and the legal obligations that govern contractor-owner agreements. Understanding these fundamentals is not just useful for the exam. It is directly applicable to protecting your business in a market like this one.