Consumer prices · 13 categories · latest 2026-07-01
Source: International Monetary Fund. Data as of 2026-09-21. Collected by Living Inflation Data, HBS Innovations in Economic Measurement (IEM) Lab www.iemlab.org.
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4 recorded findings for this country, shown exactly as in the full quality register.
| Country | Source | Periods | Status | Series | Found | Detected by |
|---|---|---|---|---|---|---|
| Burundi | IMF | 2025-09-01 | confirmed | BDI.CPI_* | 2026-09-02 | Single-month index anomaly |
| September 2025 is wrong across four Burundian divisions and, like Guinea's January 2007, it is wrong in BOTH directions: communication 134.3 -> 248.5 -> 133.3 and education 191.7 -> 270.8 -> 195.8 spike, while recreation 263.4 -> 134.2 -> 263.5 and restaurants 294.5 -> 196.6 -> 303.5 halve. Every one of the eight surrounding months agrees with its partner to within 3%. Two of these look like the same pair of numbers swapped between divisions, which is a guess; that the month is unusable is not. | ||||||
| Burundi | IMF | 2024-05-01, 2024-11-01 | confirmed | BDI.CPI_CP07_*, BDI.CPI_CP08_* | 2026-09-02 | Possible index rebasing |
| Two Burundian divisions step down in 2024: transport 183.20 -> 119.30 in May (-34.9%, six-month average 0.78x) and communication 203.30 -> 125.40 in November (-38.3%, 0.66x). Transport is the odd one -- it sits near 128 for six months and then jumps to 211.2 in November 2024 and keeps climbing to 231, ABOVE where it started, so whatever happened in May was undone in November rather than carried forward. That is a third shape and it is not a rebasing either. Burundi has more flags than any other country in this register (see also the two outlier entries); its series need a closer look than one pass. The step is permanent, confined to one division, and not a revision: these values were published this way. What the data CANNOT settle is whether the division was put on a new base by itself or its prices really fell, because both produce exactly this shape and nothing held here separates them -- the series is verified at 100 in the reference period the source declares, which is true either way. The country's headline index barely moves in the same month, which is suggestive and not conclusive: these are mostly light divisions, so a real fall would leave only a small mark on the aggregate. What IS certain is the consequence, because the source's own rates are this index restated -- the published month-over-month and year-over-year figures equal the index ratios at all 388,805 and 370,534 overlapping cells, checked 2026-09-02. So if the step is a re-reference, the source's own rates divide across it, and the reader has to be told. | ||||||
| Burundi | IMF | 1999-05-01, 2000-01-01, 2007-01-01, 2007-09-01 | confirmed | BDI.CPI_CP06_*, BDI.CPI_CP10_*, BDI.CPI_CP12_* | 2026-09-02 | Single-month index anomaly |
| Four scattered bad months in Burundi's older history, each in a single division and each with the neighbours agreeing to within 5%: education reads 9.14 in May 1999 between 59.42 and 59.42 -- the most extreme cell in the database, a sixth of its own neighbours; health 36.9 in January 2000 between 28.5 and 29.7; miscellaneous 55.3 in January 2007 and 55.6 in September 2007, both between values near 42. Separate from the September 2025 event, which is a whole month rather than one series. | ||||||
| Burundi, Djibouti, Kosovo, Republic of, Liberia, Qatar, Solomon Islands, Trinidad and Tobago | IMF | whole series | watching | LBR.CPI_CP10_*, BDI.CPI_CP10_*, SLB.CPI_CP08_* +6 more | 2026-09-02 | Manual |
| Found while working the base-break queue and recorded rather than checked, because measuring it did not support a rule. 109 runs across 74 series publish an index that does not change AT ALL for two years or more. Liberia's education index is exactly 100.00 for 157 consecutive months -- thirteen years -- and Burundi's is 95.00 for 98. The reason there is no check: 82 of the 109 runs are communication and education, which is exactly where administered and regulated prices sit, so a flat index in those divisions is often the correct answer rather than a placeholder. A rule firing 109 times in the two divisions where flatness is normal would be the queue crying wolf, which this file is explicit about not doing. The subset worth returning to is the 19 runs pinned at exactly 100.00: a series sitting on its base value and never leaving it is a different claim from one holding a fixed tariff. The series named here are the longest runs, so a reader of any of them is told; the other 65 series are not, which is a gap this entry does not close. | ||||||