North American Containerboard Prices Face Further Pressure in 2026

Introduction

North American containerboard prices are facing another round of upward pressure in September 2026. Packaging Corporation of America (PCA) proposed a $140 per ton increase for containerboard and corrugated products effective September 1. International Paper followed with an $80 per ton increase, while Smurfit Westrock proposed a $100 per ton increase. Cascades also announced increases of $110 per ton for linerboard and white-top linerboard and $140 per ton for corrugated medium, effective September 8.

The latest increases come at a time when demand for corrugated packaging remains relatively soft. Instead of strong demand growth, the market is being influenced more heavily by supply reductions and higher production costs.

Containerboard Capacity Cuts Tighten Supply

The North American containerboard market has undergone significant capacity reductions over the past year.

Fastmarkets estimates that approximately 3.9 million tons of U.S. containerboard capacity were permanently removed between February 2025 and March 2026. This represents around 10% of total U.S. containerboard capacity.

The impact of these closures is becoming more visible in the supply chain. According to Fastmarkets, U.S. containerboard order backlogs were around five to six weeks in August, while some kraft packaging board orders were reported to have backlogs of up to eight weeks.

This creates an unusual market situation. Demand has not increased sharply, but the available supply has become tighter. As a result, containerboard producers have more room to push for higher prices.

Why Are Containerboard Prices Rising Despite Weak Demand?

The current price movement cannot be explained simply by stronger demand for corrugated packaging.

Fastmarkets reported that U.S. box exports declined 1.8% year over year in the first quarter of 2026. This suggests that the latest pricing pressure is more closely connected to changes on the supply side than to a sudden increase in packaging consumption.

When a significant amount of production capacity leaves the market, the remaining supply becomes more important to buyers. Even when orders remain relatively stable, longer backlogs and tighter availability can create upward pressure on prices.

For corrugated box manufacturers, this means material costs can continue to rise even when packaging volumes are not growing at the same rate.

OCC and Freight Add Further Cost Pressure

Raw material and logistics costs are adding another layer of pressure to packaging producers.

Old Corrugated Containers (OCC) are an important recovered fiber source for recycled containerboard production. Fastmarkets reported that U.S. OCC prices increased during the first half of 2026, with prices rising another $5–10 per short ton in June.

Transportation costs also affect the cost of moving recovered fiber and finished packaging materials. When raw material and freight expenses increase at the same time that containerboard capacity is being reduced, producers face additional pressure on their margins.

These factors do not necessarily determine the final market price on their own, but they can make price increases easier for producers to justify.

Not All Proposed Increases Will Reach the Market

The latest announced increases should not automatically be treated as a guaranteed $140 per ton increase in actual transaction prices.

AICC, the Association of Independent Corrugated Converters, has questioned whether current market conditions are strong enough to support another round of price increases. The timing and size of the latest proposals have also attracted attention from independent packaging companies.

This difference between announced increases and actual market prices is important for buyers. Producers may announce a specific increase, but the amount ultimately reflected in transactions can depend on negotiations, regional supply conditions and customer demand.

There can also be a delay between a producer's price announcement and its full impact on downstream packaging businesses.

PCA CFO Kent Pflederer said during the company's July earnings call that most of the impact from the first price increase was expected to flow through to downstream businesses during the third quarter, while the majority of the impact from the second increase was expected in the fourth quarter.

For packaging buyers, this means that some of the cost pressure from previous increases may still be working through the supply chain while new increases are being negotiated or implemented.

North America and the Global Market Are Moving Differently

The tighter supply conditions in North America contrast with the broader global containerboard market.

Fastmarkets' 2026 outlook estimates global containerboard overcapacity at approximately 23 million tons, with around 70% of that excess capacity located in Asia.

At first glance, global oversupply and rising North American prices may seem contradictory. However, paper markets are strongly influenced by regional supply and demand conditions.

Excess capacity in one region does not automatically translate into lower prices in another. Production locations, freight costs, local inventories, recovered fiber availability and regional demand all influence the actual cost of supplying packaging paper.

For international packaging buyers, this means that global containerboard capacity alone cannot determine local purchasing costs.

What Does This Mean for Packaging Paper Buyers?

For manufacturers using kraft liner board and corrugated paper, the current North American market highlights the importance of looking beyond the quoted paper price.

When local supply becomes tighter, buyers may need to pay closer attention to production capacity, lead times and supply reliability. International sourcing may also become more attractive in some situations, but the actual cost needs to be evaluated together with freight, specifications and delivery time.

In a market where prices can change quickly, a lower quoted price does not always mean a lower overall procurement cost. Reliable supply and predictable delivery can also have a direct impact on packaging production.

Conclusion

The North American containerboard market is entering another period of pricing uncertainty in 2026. Although corrugated packaging demand remains relatively soft, permanent capacity reductions have changed the balance between supply and demand.

With approximately 3.9 million tons of U.S. containerboard capacity removed and several producers pushing for further price increases, packaging manufacturers may continue to face pressure on raw material costs through the rest of the year.

For buyers of kraft liner board, corrugated paper and other packaging paper products, monitoring regional capacity, supply conditions and global price differences will be increasingly important when planning purchases.