Bitcoin-Denominated Cost of Goods Falls 19% in September
Corporate treasurers should monitor this volatility when using digital assets to cover standard operational expenses.
Updated on Oct. 29, 2026 in Inflation
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The Samara Asset Group Bitcoin Consumer Price Index recorded a 19.30 percent monthly decline in September 2026. While purchasing power as measured in Bitcoin improved over the month, the index remains 43.75 percent higher on a year-over-year basis.
Why it matters
This index allows corporate treasurers and institutional investors to track Bitcoin-denominated purchasing power relative to a standardized basket of goods. The data highlights the volatility inherent in using Bitcoin as a store of value compared to traditional currency-denominated costs.
The index fell 19.30 percent in September 2026, marking a deeper monthly decline than the 6.56 percent drop seen in August 2026. On an annual basis, the basket of goods rose 43.75 percent as of September 2026, down from the 90.00 percent year-over-year increase reported the previous month.
The players
Samara Asset Group
A Malta-based financial services firm that provides institutional tools for tracking Bitcoin-denominated economic data.
The details
The index re-prices the U.S. Bureau of Labor Statistics CPI-U basket of goods and services using Bitcoin, with price data sourced from platforms like Yahoo Finance. This methodology maintains the composition of a standard consumer basket but calculates total costs exclusively in Bitcoin. The result shows how the cost of maintaining consistent operations fluctuates when measured against Bitcoin market volatility rather than fiat currency.
Timeline
May 2025: Samara Asset Group launched the index.
April 2026: The index fell 0.95 percent monthly and rose 25.90 percent annually.
August 2026: The index fell 6.56 percent monthly and jumped 90.00 percent annually.
September 2026: The index fell 19.30 percent monthly and rose 43.75 percent annually.
Market Landscape
The index uses the U.S. Bureau of Labor Statistics CPI-U basket as its foundation to measure price volatility in Bitcoin terms. This follows a pattern of reinterpreting standard government metrics through the lens of emerging asset classes to inform treasury strategies.
Operators holding significant Bitcoin reserves should monitor how monthly CPI fluctuations affect their actual procurement power. Financial planning should account for this volatility as a distinct factor in maintaining operational liquidity compared to standard fiat cash flow models.
The takeaway
Bitcoin-denominated costs remain highly sensitive to underlying market prices, as shown by the sharp variance between monthly and annual index performance. Treasurers should maintain consistent tracking of these figures to better understand the true cost of their digital asset exposure.
Further reading
For broader context on how shifting market variables impact operational costs, visit our section on Inflation.
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