Tariffs Didn't Go Away: Here's How Smart Contractors Are Protecting Their Margins in 2026

The cost of your building materials went up. Your bid prices didn’t keep pace. That gap is where margins disappear.

Building material costs have risen more than 40% since December 2020, driven primarily by tariff-affected materials like steel, copper wire, and industrial controls. And the policy driving much of it isn’t easing. The effective tariff rate on construction goods hit a 40-year high of 25% to 30% in 2025 and is expected to hold. Steel, aluminum, and copper carry 50% duties. Softwood lumber is at 10%, with derivatives at 25%.

NAHB estimates that roughly 60% of builders have already seen cost increases from tariff actions. If you’ve been waiting for relief, this is the new baseline.

Ronald Prevost, a licensed mold remediation contractor in the Gulf South and owner of Mold Shield Restoration, has watched chemical prices nearly double in the last two to three years. His response: change how he bids, buys, and protects his bottom line.

Here’s the playbook.

1. Know what’s actually hitting your costs

Not all tariff exposure is equal. Knowing which materials carry the steepest burden helps you focus your margin protection where it matters most.

Metals are the hardest hit, with 50% tariffs on steel, aluminum, and copper products. If your projects involve electrical work, HVAC, plumbing, or metal roofing, tariffs are hitting your P&L directly. Even derivatives — conduit, fittings, panel boards — carry 25%.

Lumber carries a 10% tariff, with derivative wood products at 25%. 

Everything else falls under a global 10% baseline tariff through July 2026. That includes imported tile, fixtures, hardware, and finished goods.

Prevost has felt it firsthand: “Two weeks ago, the price of one of our main chemicals went up 30% overnight with no warning,” he says. “They just, you know, a third increase with no explanation, no anything.”

And tariff-driven price increases don’t stay limited to imported materials. Domestic suppliers tend to raise prices in step because they can. Prevost confirms this from his own purchasing — when prices go up, “everybody goes up pretty much in sync.”

Your move: Identify the three to five materials that make up the largest share of your project costs. Check whether they’ve moved in the last 90 days. If you’re estimating from memory instead of current supplier quotes, your margins are already leaking.

2. Put expiration dates on every bid

This is the single highest-impact change most residential contractors can make right now, and the data says most haven’t done it yet.

In a national survey of contractors, roughly 70% reported being affected by tariffs. Yet only 20% had responded by adding price-sharing adjustments or escalation terms to their contracts. That means the vast majority of contractors are still fully exposed to cost increases between bid and build.

Prevost changed his bidding strategy and considers it the most important adjustment his business has made. “The real changes that we’ve done is we don’t do long-term bids — there’s an expiration date on our bids, on our quotes,” he says. “After a certain period of time, we have to re-evaluate the job.”

He’s lost work because of it. Homeowners who return months later expecting the original price don’t always respond well. “I’ve lost jobs over it,” Prevost says. “But, you know, everybody else has gone up too. I’m not going to do a job where we don’t hit certain profit margins.”

That willingness to walk away from work that doesn’t pencil is what separates contractors who maintain margins from those who slowly bleed them. 

Three steps to protect yourself:

• Put an expiration date on every quote. Thirty days is standard. For material-heavy jobs where costs are especially volatile, consider 15.
• Add a material escalation clause to your contracts. If material costs increase by a defined percentage between signing and purchasing, the price adjusts. Without this language, a fixed-price contract in a volatile market means you absorb every cost spike.
• Frame it as transparency, not uncertainty. “We price based on current costs so the number you see is real. If materials shift before we start, we update the quote so there are no surprises.”

Your move: Add an expiration date and a one-line escalation clause to your contract template this week. Pull your last five quotes and re-price anything more than 30 days old before you send.

3. Update your estimating system for today’s market

“It’s not like 10 years ago, when you just picked a number and you were good,” Prevost says. “Prices didn’t change that much. But now, you go to buy something you haven’t bought in six months, it could be double.”

The consequence of guessing is severe. Research shows one in four construction companies would risk going out of business from just two or three inaccurate estimates. In a market where costs can shift 25–30% in months, the margin for estimating error has disappeared.

Prevost sees the pattern regularly with newer contractors: “I find a lot of new people come in and they just pull a price out of midair and run with it.” His fix is operational. “Have someone responsible for keeping your price points correct,” he says. “And you’ve just got to stay on top of everything now.”

That means building a system:

• Maintain an internal price list and update it monthly. If you’re a solo operator, block one hour on the first of each month to verify your top 10 material costs.
• Price from current supplier quotes, not from your last project’s costs. What you paid three months ago may have no relationship to what you’ll pay next week.
• Track actual costs against estimates on completed jobs. That feedback loop turns your project history into a competitive bidding advantage.

Your move: Build or update an internal price list for your top 10 materials this month. Set a recurring calendar block to re-verify pricing monthly.

4. Rethink what materials you’re buying

When tariffs push the cost of a material category up 25–50%, the spec you’ve always used may no longer be the most profitable choice. Substitution isn’t cutting corners. It’s evaluating whether a tariff-inflated material has a domestic or alternative equivalent that delivers the same performance at a lower cost.

The same AGC survey found that 13% of contractors have already switched from foreign to domestic producers in response to tariffs, while 32% have accelerated purchases to lock in pricing. Both are active margin levers that require no new technology, just a shift in purchasing habits.

Where substitution makes sense: Imported tile, fixtures, and hardware carry the global 10% baseline tariff on top of any category-specific duties. Domestic alternatives avoid those layers entirely. Steel-heavy components like metal roofing and rebar carry the steepest burden at 50%. For projects where specs allow flexibility, evaluate engineered wood, composite, or alternative systems outside the metals tariff structure. Cabinetry and vanities from China carry a 25% tariff that remains in place. Domestic manufacturers have had time to scale up, and options exist now that didn’t two years ago.

Where early buying makes sense: Lock material pricing as soon as a project is signed, not when you’re ready to order. For high-use consumables with shelf stability — fittings, fasteners, adhesives, tape — buy ahead when prices dip.

Your move: On your next project, identify the one or two highest-cost materials and ask your supplier for a domestic or alternative-source option at the same spec. Even one substitution that avoids a 25–50% tariff layer can shift the project’s margin.

5. Close the deal when the price is higher

You’ve done everything right: current pricing, escalation clause, tight scope. The bid is accurate and your margin is protected. But the number is higher than the homeowner expected.

“The homeowners don’t care if you make money or not,” Prevost says. “They really don’t.”

NAHB estimates that tariff actions alone are adding roughly $10,900 to the cost of a new home. Renovation costs are following the same trajectory. Contractors who are positioned to win can keep the project at full scope without asking the customer to absorb a lump sum that makes them flinch.

The shift is from total cost to monthly payment. Offering financing through Acorn Finance lets homeowners compare multiple loan offers in minutes, turning a $40,000 renovation into a monthly payment they can commit to. You get paid in full when the project starts. The homeowner spreads payments over time. Your margin stays intact.

Your move: Next time a homeowner hesitates on price, try: “Material costs are higher across the board right now — that’s industry-wide. But we offer financing that lets you do the full project at a monthly payment that works for you. Want to see what the numbers look like?”

Start here

This week: Add expiration dates and a material escalation clause to your contract template. Re-price any outstanding quotes with stale material costs. Get a second supplier quote on your next material order.

This month: Build or update your internal price list for your top 10 materials. Identify one high-cost material per project where a domestic or alternative-source option could reduce tariff exposure.

This quarter: Set up contractor financing through Acorn Finance so homeowners can say yes to full-scope projects at current material prices.

The bottom line

Tariffs aren’t going anywhere in 2026. The contractors protecting their margins aren’t hoping costs come back down. They’re changing how they bid, what they buy, and how they present pricing — with current data, contract language that accounts for volatility, and financing that keeps homeowners moving forward. None of it requires a procurement department or enterprise software. It requires discipline, current information, and the willingness to stop absorbing costs your customers should be sharing.

Ready to close jobs at today’s material prices? Acorn Finance lets your customers compare loan offers in minutes, so a $40,000 project becomes a monthly payment they can say yes to — even when tariffs push costs higher. See how contractor financing works.