UK · £/tonne · AI-forecasted
Polysulphate Price, UK
UK Polysulphate price, AI-forecasted, £/tonne. Indicative, forecasted and not a transactable quote.
What the nutrient costs
The headline price is per tonne of product. This is the price of the nutrient inside it.
Price trend
How the daily forecast has moved over the last 12 months. The shaded band is the confidence range; the marker is today.
Month-on-month change
How much the daily forecast moved from one month to the next. Green is a rise, tan a fall.
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Report what you paid for Polysulphate
Add your last Polysulphate purchase (tonnage and price) and see instantly whether you paid above or below the going rate. Every report sharpens the daily forecast, and no supplier ever sees who you are.
Monthly price history
The daily forecast's level at the end of each of the last twelve months.
| Month | Price | Change |
|---|---|---|
| August 2026 | £251 | +£2 |
| July 2026 | £249 | +£2 |
| June 2026 | £247 | +£2 |
| May 2026 | £245 | −£25 |
| April 2026 | £269 | −£1 |
| March 2026 | £270 | +£25 |
| February 2026 | £246 | +£12 |
| January 2026 | £234 | −£2 |
| December 2025 | £236 | −£0 |
| November 2025 | £236 | −£5 |
| October 2025 | £240 | +£4 |
| September 2025 | £236 | n/a |
The current modelled uncertainty band is tight, about ±2%.
Our model's typical Polysulphate miss is £2/t, with 7 of its last 10 checks landing inside the published range. Polysulphate is £258/t below the average of the other tracked grades. Over the past 52 weeks, Polysulphate has ranged from £244 to £275/t, and it is currently in the middle of that range.
About this grade
Polysulphate is a mined mineral rather than a manufactured fertiliser. It is polyhalite, extracted in North Yorkshire, and it supplies sulphur along with potassium, calcium and magnesium in a single naturally occurring granule. Its nutrients release gradually rather than all at once, which suits it to situations where sulphur is needed over a long window.
Common questions
- Why is there no cost per kilogram of nutrient?
- Because polysulphate supplies four nutrients at once. There is no single nutrient to divide the price by, and apportioning the cost between sulphur, potassium, calcium and magnesium would require assumptions about what each is worth to you.
- What moves the polysulphate price?
- Unusually for a fertiliser on this index, it is domestically mined, so it is not exposed to freight and import parity in the way an imported grade is. Its price is driven by production and by demand for sulphur.
- What is it used for?
- Chiefly as a sulphur source. UK soils receive far less sulphur from the atmosphere than they did before industrial emissions were cleaned up, and sulphur deficiency limits nitrogen use efficiency, so a sulphur input has become part of a normal programme rather than a corrective.
- Where does the daily price come from?
- It is produced every day by our forecasting model, and the model is re-validated continuously against weekly UK market prints: a grade publishes a modelled figure only while it beats a naive hold-the-last-price baseline on months it has never seen. The shaded band around the line on the chart is the confidence range of the estimate.
- Methodology and the signals behind each grade →
Buying guides
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Today's price and recent trend for the other tracked grades.
AI-forecasted market estimates, getting sharper as farmers add what they paid. Indicative, not a transactable quote.