BHP flags $2.3 billion potash write-down as Jansen costs rise

BHP said its Jansen potash project in Saskatchewan will cost more to complete and that it expects to book an impairment of about $2.3 billion on its investment, the latest setback for one of the miner’s most important growth projects.

The company said Stage 2 of Jansen is now expected to cost $6.9 billion, up from the $4.9 billion approved in 2023. BHP said the increase is being driven by additional construction hours and materials.

Despite the higher bill, BHP said it will proceed with Stage 2. The project remains central to the miner’s push to build a larger potash business and diversify further beyond iron ore and coal.

Another cost blow for Jansen

The latest revision adds to a long-running pattern of cost pressure at the Canadian project. BHP had already lifted the expected cost of Stage 1 to $8.4 billion, above earlier estimates, underscoring how difficult the build-out has become.

The impairment reflects the higher forecast capital intensity for the overall project. In effect, BHP is signaling that the value of its investment to date has been hit by the rising cost base around the project.

The new charge is likely to hit near-term earnings and book value, and it will renew scrutiny of management’s execution on a project that has already taken longer and cost more than expected.

Why Jansen matters

Jansen is BHP’s flagship potash development and a strategic bet on fertilizer demand over the long term. Potash is used in crop nutrients, and BHP has repeatedly framed the Saskatchewan project as a future-facing asset.

That strategic role is why the latest overrun matters beyond the immediate accounting hit. BHP is relying on Jansen to help broaden the company’s earnings base and reduce dependence on its legacy iron ore and coal exposure.

The project has also been under investor scrutiny because of delays and cost overruns. Each new revision raises the question of whether the business case still looks attractive enough at the updated price.

Leadership transition and next steps

The latest blow lands as BHP prepares for a change at the top. Brandon Craig is due to succeed Mike Henry as chief executive on July 1, 2026, giving the project another layer of transition to navigate.

Investors will be watching for more detail in upcoming production or results disclosures, including whether management changes capital spending guidance or adjusts the schedule for Jansen’s ramp-up.

For now, the key issue is whether Stage 2 can be held at the new $6.9 billion estimate or whether more cost pressure emerges before the project advances further.