The ResourceWise U.S. Unbleached Corrugated Box Cost Index: A Cost-Based Alternative for Corrugated Contract Price Adjustments

Recent linerboard price increases have heightened questions among corrugated packaging buyers and suppliers about how well existing contract adjustment mechanisms reflect the cost of producing a finished box. They have also reinforced the need for reliable alternatives for parties that want to structure their agreements utilizing a more complete methodology.

Both buyers and suppliers need long-term supply agreements that remain workable as manufacturing costs change. Buyers depend on consistent supply, often across multiple locations, while suppliers need committed volume to support capital-intensive operations.

The ResourceWise U.S. Unbleached Corrugated Box Cost Index provides an independent, cost-based reference for those adjustments. Buyers and suppliers can use the official quarterly Index within an agreed price adjustment mechanism while negotiating the starting price, pass-through, timing, thresholds, and other terms that fit their commercial relationship.

Why Use a Cost-Based Reference for Contract Adjustments?

Corrugated contracts in the U.S. have historically often used linerboard indices as the basis for price adjustments. While this may make economic sense previously, the industry is now much more integrated with several players approaching 100% during parts of the cycle. Moreover, we hear from both customers and buyers that they desire an alternative index to provide choice in the marketplace, and options to develop creative and efficient ways to do business.

Although paper remains a critical component of corrugated box costs, there are substantial costs that are incurred to convert paper into a typical corrugated box. In total, these costs, like energy, freight, maintenance, and labor can often be more than the paper itself for a given box type. When these costs move while linerboard doesn’t, this creates friction either for the buyer or seller.

The ResourceWise Cost Box Index brings those costs together in a robust and reliable way to provide the market with an additional tool for contracting.

How the ResourceWise Cost Box Index Supports Contract Adjustment

The ResourceWise Cost Box Index does not set the selling price of an individual box, but reflects the average of a typical box in the U.S. As they do now, buyers that wish to contract together first establish their starting price based on service requirements, product characteristics, and other items.

They then agree on a price adjustment mechanism (“PAM”) that references movement in the official quarterly Index.

The parties determine how that movement translates into their agreement, including adjustment frequency, pass-through, thresholds, and timing. While we are aware of many different strategies having to do with timing (e.g., quarter to quarter, etc.) and pass-through (percent or dollar change of movement), the specific pass-through mechanism is defined by your unique circumstance.

Built on the Economics of Corrugated Production

The ResourceWise Cost Box Index combines proprietary industry intelligence, engineering-based cost models, and market pricing data to estimate the industry-average cost of manufacturing and delivering unbleached corrugated boxes in the United States.

The model reflects the major costs involved across the corrugated production and delivery chain.

It also accounts for changes in the cost structure itself. Each quarter, the model recalibrates the relative weight of each cost category based on changes in underlying costs. This allows the ResourceWise Cost Box Index to reflect how the industry’s cost structure evolves over time and avoids inaccuracy and volatility issues that can arise from certain fixed-weight methodologies.

Quarterly reporting shows both the overall movement in the Index and the major cost categories contributing to that change, giving buyers and suppliers visibility into the reference used for their adjustment mechanism.

ResourceWise has developed asset intelligence and modeled production costs across the pulp, paper, and packaging value chain for decades. The ResourceWise Cost Box Index builds on that foundation to provide an independent cost benchmark for the U.S. corrugated industry.

Understand What Changed—and Prepare for What Comes Next

The official quarterly ResourceWise Cost Box Index serves as the contract reference, but buyers and suppliers also need visibility between publication dates and future budgeting periods.

ResourceWise provides two tools for that purpose:

The Box Cost Nowcast provides an early estimate of the upcoming official quarterly Index using the latest available information. It helps teams understand where costs appear to be heading before the official result is available and keep their colleagues informed.

The 18-month Box Cost Forecast provides a forward-looking view of expected cost movement and the factors influencing it. Buyers can use that outlook to support budgeting and sourcing plans, while suppliers can use it for commercial planning and customer discussions.

A Common Reference for Box Agreements

The value of the ResourceWise Cost Box Index is not simply that it produces another market number.

It gives buyers and suppliers a shared, independent basis for adjusting long-term contracts as industry production costs change.

That can help both parties:

• Establish a cost-based reference for price adjustments.
• Understand what drove a quarterly change.
• Explain adjustments internally or to customers.
• Gain earlier visibility into the developing quarter.
• Build more informed budget and planning assumptions.
• Prepare for future customer and supplier discussions.

For buyers and suppliers seeking a long-term pricing mechanism tied to changes in corrugated production costs, the ResourceWise Cost Box Index provides the reference, while the Box Cost Nowcast and 18-month Box Cost Forecast provide additional visibility for planning ahead.

Talk with a ResourceWise expert about how the ResourceWise Cost Box Index can support your corrugated price adjustment approach.