Producer Price Index for phosphates, a WPU commodity aggregate broader than WPU0652026A (Phosphoric Acid, Superphosphates and Other Phosphate Fertilizer Materials), covering the wider phosphate materials group. Index base: 1982 = 100.
Latest value
386.396
Index · as of Aug 2026
Year-over-year change
+3.6%
BLS
Month-over-month change
+0.7%
Latest value is 1 month old. Next update expected around Sep 2026.
Calculate your adjustment
Free, no account needed. Nothing you enter here leaves your browser.
Enter a base value, a current value, and a contract amount to see the adjustment.
Price history
Data & insights
Key figures
From Jan 2024 to Aug 2026 the index went from 297.5 to 386.4, a change of +29.9%.
Highest reading in that period: 389.0 in Jun 2026. Lowest: 289.0 in Jul 2024.
Largest one-month rise: +8.3% in Apr 2026. Largest one-month fall: -9.2% in Dec 2025.
For a clause that resets its base every year, a 10% cap or floor would have limited the adjustment in 10 of the last 20 months.
Volatility (12mo)
±3.86%
Std. dev. of month-over-month change
Strongest average month-over-month move historically: December (-4.6% avg).
What this means for your clause
Sometimes used in older fertilizer supply contracts drafted before the more granular phosphate fertilizer materials series existed, since this one has a longer continuous history back to 1982. A new contract drafted today should generally prefer the more granular series unless a long historical baseline is the deciding factor.
Draft a clause
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Phosphates (BLS series WPU065202), published by BLS.
Base Period: the index value published for August 2026 (or the month of contract signing, if different) is the Base Value.
Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value.
Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement.
[Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
Compare the current value of BLS series WPU065202 (Phosphates) to its value at contract signing, turn that into a ratio, and apply the ratio to the phosphate fertilizer-affected line items. A usable clause also names an averaging window, a publication-lag rule, and a cap.
We use cookies to run Escalake and to understand site traffic. Choose Accept Minimum for essential cookies plus anonymous visit counting only, or Accept All to also let us link activity to your account. Read our Cookie Policy and Privacy Policy.