From Jan 2017 to Sep 2026 the index went from 112.8 to 136.1, a change of +20.7%.
Highest reading in that period: 137.1 in May 2023. Lowest: 108.0 in Mar 2018.
Largest one-month rise: +3.6% in Nov 2022. Largest one-month fall: -2.5% in Nov 2017.
The year-over-year change stayed within 10% either way in each of the last 36 months, so a 10% annual cap or floor would not have been reached.
Use it in a contract
Draft clause citing this series
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 — Sanitary Tissue Paper Products, Made in Paper Mills (BLS series WPU091501233), published by BLS.
Base Period: the index value published for September 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.]
More an institutional and janitorial supply input than a manufacturing one, relevant to a facilities-management or janitorial-supply contract rather than a typical production contract.
Divide the current value of the BLS series for the stage you buy (WPU0911 for wood pulp, WPU0913 for paper) by its value at contract signing, then apply that ratio to the pulp or paper part of the price. A usable clause also names an averaging window, a rule for revised values and missing months, and a cap.
Let Escalake run this clause for you
Escalake tracks US PPI — Sanitary Tissue Paper Products, Made in Paper Mills, applies your formula, and gives both sides a number they can confirm, no spreadsheet required.