In July, North American containerboard producers announced their third round of price increases for 2026, effective in September. The announcements ranged from $80 a ton to as much as $140. The top of that range was roughly double the usual size for the industry, and participants called it unprecedented.
In mid-September, Fastmarkets RISI, the benchmark index much of the industry prices against, recognized $70 a ton on linerboard and $100 on medium. October’s update showed no further movement. Around the same time, a buyer survey from Green Markets found no evidence the third round had reached the open market at all, with some buyers still working June’s $50 increase into what they paid. Index watchers expect implementation of this round to continue into March 2027.
Read together, those facts show something buyers rarely get a clear look at: the gap between what a price increase announces and what it actually collects. The headline was as much as $140. The index has recognized $70. And collecting even that is expected to take until well into next year.
An announcement is an opening position
It’s easy to read a supplier price increase as a fact. Costs went up, so ours go up. Sometimes that’s right. Input costs move, and suppliers have to move with them.
But an announced increase is a proposal. It’s the number the seller wants, published early to set expectations and test what the market will carry. The index number that lands later is much closer to what the market accepted. In 2026, those numbers have consistently differed. The first round was announced at $70 and netted $50 on the index. The second, at $50, was recognized in full. The third was announced as high as $140 and has netted $70 on linerboard so far. Year to date, the index is up about $170 a ton on linerboard and $200 on medium. That is real pressure on anyone who buys boxes. It is also well short of the headlines.
This isn’t a claim that producers are being unreasonable. Capacity has come out of the market and input costs are up. But the independent converters’ association made the opposite argument in August, saying three increases in five months weren’t supported by raw material costs or demand data, and that the pattern looked like producers testing what the market would accept. It also questioned the supply picture, noting that much of the capacity removed in 2025 was export-only and that some outages were temporary. When people inside the same industry read the same facts differently, what you pay usually depends on what you signed.
What you signed matters most
What a company actually pays comes down to unglamorous details: what the agreement says about pass-through, which index it references and with what lag, how much volume is involved, how much term is left, and whether anyone compares the increase letter to the contract.
That last step matters more than people expect. In a busy organization, a supplier letter arrives, goes to whoever manages the account, and the new rate becomes the baseline. Nobody approved an overpayment. It just never came up as a decision.
We regularly see the same announced increase land very differently at two companies buying similar volumes in the same quarter. The difference is rarely negotiating skill. More often, one team had the time and category knowledge to check what the index did against what the contract required, and asked while it still mattered.
“We already looked at this”
A fair point. Many companies ran hard cost reviews in the last two years, and that work pays off.
Those reviews usually focus on what’s visible on a spend report: headcount, discretionary spend, the largest contracts. What tends to remain is the mechanics underneath a price. Pass-through terms are a good example. They sit in agreements signed years ago, matter only on the few days a year an index moves, and checking them means tracking an index most companies have no reason to watch.
Four questions before 2027 agreements are set
If supplier increases hit your business this year, in packaging or any category priced off a published index, these are worth asking:
- What did the relevant index actually do, compared with what was announced?
- What does our agreement say triggers a pass-through, against which index, and with what lag?
- When the last increase came through, did someone compare it against those terms?
- If an increase was applied at the announced number and the index came in lower, is there a conversation to have about the difference?
None of this requires a fight with a supplier. Most suppliers are passing along real pressure. The goal is to pay the number that was agreed, which is often not the number that was announced.
The quiet side of savings
This is the low-disruption end of cost work. No new vendor, no RFP, no change to anyone’s service. Just a careful read of the contract against a public index, and a conversation about the gap. Corrugated is one of the categories Alliance Cost Containment (ACC) works in, and this gap shows up regularly. We find money in indirect spend nobody was looking at, working alongside our clients’ procurement and finance teams to find it, recover it, and verify the savings.
