UK · £/tonne · AI-forecasted
Triple Superphosphate Price, UK
UK triple superphosphate (TSP) 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.
Build the index
Report what you paid for Triple Superphosphate
Add your last Triple Superphosphate 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 | £635 | +£4 |
| July 2026 | £632 | +£4 |
| June 2026 | £628 | +£15 |
| May 2026 | £613 | −£8 |
| April 2026 | £621 | +£0 |
| March 2026 | £621 | +£94 |
| February 2026 | £527 | +£19 |
| January 2026 | £509 | −£4 |
| December 2025 | £512 | −£3 |
| November 2025 | £515 | +£5 |
| October 2025 | £510 | −£18 |
| September 2025 | £527 | n/a |
Over the past 52 weeks, Triple Superphosphate has ranged from £526 to £632/t, and it is currently near the top of that range.
The current modelled uncertainty band is tight, about ±2%. Over the past quarter, Triple Superphosphate has risen £34/t (5.6%). Across its last 10 market checks, our Triple Superphosphate estimate has a median miss of £5/t, and 9 landed inside the published range.
About this grade
Triple superphosphate is a straight phosphate fertiliser at 46% phosphate, with no nitrogen. That makes it the phosphate source to reach for when a field needs phosphate and nothing else, and it is the only grade on this index that lets you price phosphate on its own without apportioning a blended product.
Common questions
- TSP or DAP?
- Both supply 46% phosphate. DAP brings 18% nitrogen with it, triple superphosphate brings none. If the field needs the nitrogen, DAP is usually the better buy. If it does not, you are paying for nitrogen you did not want, and comparing the cost per kilogram of phosphate rather than the price per tonne makes that plain.
- What moves the TSP price?
- Phosphate rock and sulphuric acid, its two inputs. It carries no ammonia, so it is less exposed to gas prices than DAP is, and the two grades therefore do not always move together. The gap between them is worth watching.
- Is this price what I would pay?
- No. It is a modelled estimate of the going UK market rate, published so you have something to measure a quote against. Delivered price depends on load size, haulage, timing and terms.
- 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
Compare grades
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.