How to reprice OEM contracts for tariff pass-through before the window closes

Tariffs have become a key variable in the automotive parts manufacturing pricing strategy. Tier 1 and Tier 2 suppliers must align internally on a timely and structured process to protect margins while at the same time maintaining and solidifying OEM trust.

• Unmitigated tariff exposure ranges from $8M to $25M annually for a mid-size Tier 1 ($500M to $1.5B revenue), representing 5 to 10 percentage points of gross margin risk.

• Sales leaders must align Pricing, Finance, and Legal teams around a single strategy. 

• Automotive suppliers who recover the most cost move fast, typically within the first two weeks (before OEM budgets harden and negotiating leverage erodes).

• Use agreed upon, shared burden models to help recover 60 to 70% of the tariff impact while also preserving long term OEM relationships.

What the tariff pass-through process should look like 

When tariffs hit, the suppliers who recover the most move fast, typically within the first two weeks before OEM budgets harden and negotiating leverage erodes. 

The most effective suppliers align Sales, Pricing, Finance, and Legal behind a single repricing strategy, issue formal notices early, lean on existing contract language, and itemize tariff surcharges as separate line items, rather than burying them in the base price. This itemization isolates the tariff impact, accelerates OEM review, and makes future adjustments cleaner. 

They speed up the recovery process with clear documentation; and where full pass-through isn't possible, they negotiate shared-burden models that typically target the industry baseline of 60–70% of the tariff's impact, while keeping the OEM relationship intact.

When you have a standardized process, everyone benefits. There is no extra work or effort, and speed is key. 

On the other hand, I’ve been at places where disparate systems, poor document management, poor preparation, lack of documentation leads to longer discussions, missed opportunities, and eventually lower recovery. 

What to document when repricing OEM contracts for tariff pass-through: 

Each notice should be tied to specific contract provisions (material cost adjustment, change-in-law, surcharge, etc.) and support it with a completed BOM, verified production quantities, and shipping records tying goods to the destination customer. Preparing detailed analysis with supporting documentation builds trust and makes the recovery process much quicker. 

• A completed BOM (Bill of Materials) with all details fully attributed to the product 

• Verified, actual production quantities 

• Shipping records tying goods to the destination customer 

How are tariffs impacting automotive suppliers? 

In January 2025, new tariffs were introduced at a time when the industry was already facing rising material costs, supply chain disruptions, and softer EV demand. For suppliers, the margin impact is immediate. Unmitigated tariff exposure ranges from $8M to $25M annually for a mid-size Tier 1 ($500M to $1.5B revenue), representing 5 to 10 percentage points of gross margin risk. This exposure can move a company from a profitable position to one that is not within a quarter, which can downgrade credit rating and even affect the stock price 

To absorb this financial impact, I’ve seen automotive suppliers that have cut R&D budgets or initiated hiring freezes to help conserve cash.

These examples are not exclusive, but they do illustrate the serious consequences of what can happen if companies aren’t prepared. 

What happens when Tier 1 and Tier 2 suppliers don’t pass-through tariffs? 

When organizations are slow to respond, there is an immediate cash burn. Other impacts may include: 

• Lost contractual rights: Most OEM contracts allow only 30 to 90 days to file repricing notices. If your team misses the window, you may lose your right to recover costs entirely. 

• Weaker negotiating position: Recovery becomes more difficult the longer it's delayed. Other suppliers are actively pursuing collection, and those who act first are the ones who get paid. Don't wait to be put at the back of the queue.  

• Margin erosion compounds: Without properly calculating and passing through tariffs, a profitable program can turn into a loss making one within a quarter. For example, material costs increased from the previous quarter that weren’t expected or planned. 

• No retroactive relief:  Tariffs apply from day one, so every day without a surcharge in place is cost the supplier eats permanently unless they negotiate a retroactive true-up (which is harder the longer the delay). 

Other ways Tier 1 and Tier 2 suppliers can mitigate tariff impact 

Moving forward, companies are becoming more proactive in managing ongoing margin pressures, such as tariffs. Some of the items they are looking at include: 

• Shifting sourcing or production to markets with favorable trade agreements (i.e.) USMCA, CPTPP, and EU-FTA countries. To put it in context, a 25% tariff elimination on a $50M steel spend yields approximately $12.5M in annual savings.  

• Revisiting product/assembly strategies to reduce tariff exposure 

• Reassessing pricing methodologies to better reflect cost variability 

• Investing in software solutions that provide real time regulatory visibility, tariff scenario modeling, and AI‑enabled trade documentation.

FAQ 

What contract clauses typically support tariff pass-through? 

Look for material cost adjustment provisions, change-in-law clauses, surcharge or economic adjustment language, and force majeure terms. Review each active OEM contract before issuing notices so your justification is tied to specific language. 

What if the OEM refuses full pass-through?  

Negotiate a shared-burden model. In my experience, suppliers typically recover 60–70% of tariff impact this way while protecting the long-term relationship. Include a retroactive true-up clause so you're not absorbing cost during the negotiation period.

Sources: 

1 CRS Report R48549, congress.gov/crs-product/R48549 

2 USMCA, CPTPP, and EU-FTA countries as favorable sourcing zones. (general trade policy fact). USMCA rules confirmed by U.S. CBP, cbp.gov/trade/priority-issues/trade-agreements/free-trade-agreements/USMCA/FAQs