OECD monthly CPI inflation by country, September 2026
The change in the national consumer price index for all items compared with the same month a year earlier, as compiled by the OECD from national sources. National CPIs follow national methods, so they can differ from the harmonised EU index. Countries that have moved to the 2018 classification of consumption (COICOP 2018) are taken from the OECD's COICOP 2018 table, the others from its earlier table; each country's series comes from one table only.
46 places ranked for September 2026. Highest: Argentina (33.4%). Lowest: Costa Rica (0.3%). The median is 3.5%.
Highest 10
Lowest 10
- 46. Costa Rica 0.3%
- 45. China 0.9%
- 44. Switzerland 1.0%
- 43. Sweden 1.1%
- 42. Hungary 1.5%
- 41. Israel 1.6%
- 40. Saudi Arabia 1.9%
- 39. Japan 2.1%
- 38. Denmark 2.2%
- 37. Czechia 2.5%
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The chart shows the 40 highest values; the table lists all 46. Source: OECD Data Explorer.
In short
- Among the 46 countries with a value for September 2026, the highest is Argentina (33.4%) and the lowest Costa Rica (0.3%).
- Half of the countries are above 3.5% and half below.
- From August 2026 to September 2026 the value rose in 35 countries and fell in 3.
Full ranking
| # | Country | Value | Period | Relative size |
|---|---|---|---|---|
| 1 | Argentina | 33.4% | September 2026 | |
| 2 | Türkiye | 29.7% | September 2026 | |
| 3 | Lithuania | 6.7% | September 2026 | |
| 4 | Colombia | 6.3% | September 2026 | |
| 5 | Iceland | 5.9% | September 2026 | |
| 6 | Bulgaria | 5.7% | September 2026 | |
| 7 | India | 5.6% | September 2026 | |
| 8 | Greece | 5.0% | September 2026 | |
| 9 | Spain | 4.9% | September 2026 | |
| 10 | Croatia | 4.7% | September 2026 | |
| 11 | Belgium | 4.7% | September 2026 | |
| 12 | Brazil | 4.6% | September 2026 | |
| 13 | South Africa | 4.4% | September 2026 | |
| 14 | Australia | 4.3% | September 2026 | |
| 15 | Italy | 4.2% | September 2026 | |
| 16 | Poland | 4.1% | September 2026 | |
| 17 | Chile | 4.1% | September 2026 | |
| 18 | Ireland | 4.1% | September 2026 | |
| 19 | United States | 3.7% | September 2026 | |
| 20 | Portugal | 3.6% | September 2026 | |
| 21 | Austria | 3.6% | September 2026 | |
| 22 | United Kingdom | 3.6% | September 2026 | |
| 23 | Estonia | 3.5% | September 2026 | |
| 24 | Mexico | 3.5% | September 2026 | |
| 25 | Netherlands | 3.4% | September 2026 | |
| 26 | Norway | 3.4% | September 2026 | |
| 27 | Slovenia | 3.3% | September 2026 | |
| 28 | Indonesia | 3.3% | September 2026 | |
| 29 | Germany | 3.3% | September 2026 | |
| 30 | Latvia | 3.2% | September 2026 | |
| 31 | Slovakia | 3.1% | September 2026 | |
| 32 | Canada | 3.1% | September 2026 | |
| 33 | France | 3.1% | September 2026 | |
| 34 | Luxembourg | 2.9% | September 2026 | |
| 35 | South Korea | 2.9% | September 2026 | |
| 36 | Finland | 2.5% | September 2026 | |
| 37 | Czechia | 2.5% | September 2026 | |
| 38 | Denmark | 2.2% | September 2026 | |
| 39 | Japan | 2.1% | September 2026 | |
| 40 | Saudi Arabia | 1.9% | September 2026 | |
| 41 | Israel | 1.6% | September 2026 | |
| 42 | Hungary | 1.5% | September 2026 | |
| 43 | Sweden | 1.1% | September 2026 | |
| 44 | Switzerland | 1.0% | September 2026 | |
| 45 | China | 0.9% | September 2026 | |
| 46 | Costa Rica | 0.3% | September 2026 |
Places are ordered from the highest to the lowest value. Group medians on this site are the middle value of the members with data for the same year; they are not official aggregates.
How this ranking works
Every country is ranked on its value for September 2026, the latest period that most countries have, so all values are for the same point in time. Countries without a value for September 2026 are left out. Groups and aggregates such as the European Union are not ranked. Values are as published by OECD; the ranking is a plain ordering from the highest to the lowest value and says nothing about whether a high value is good or bad.
Earlier years: this measure has one shared period only. Methodology · Coverage and freshness