Transport & communication · code 7430
Mobile phone bill
通信料（携帯電話）
Key facts
As of August 2026, mobile phone bill prices in Japan are up 1.7% year on year and up 8.9% over five years. The official consumer price index stands at 61.0 (2020 = 100), down 57.2% versus January 2000, when the series begins.
Mobile phone bill sits in the transport & communication group of Japan's CPI basket, with 320 monthly observations from January 2000 to August 2026. The series peaked at 142.4 in January 2000 and bottomed at 47.0 in October 2021; the latest reading is -57.2% against that peak. Against ten years ago it is -46.5%.
Latest CPI
61.0
2026-08 (2020=100)
YoY %
+1.7%
5y change %
+8.9%
Change since 2000-01
-57.2%
Annual average index by year
| Year | Index | YoY % | Months |
|---|---|---|---|
| 2015 | 117.2 | -1.1% | 12 |
| 2016 | 114.7 | -2.1% | 12 |
| 2017 | 110.0 | -4.1% | 12 |
| 2018 | 105.2 | -4.4% | 12 |
| 2019 | 100.1 | -4.8% | 12 |
| 2020 | 100.0 | -0.1% | 12 |
| 2021 | 66.7 | -33.3% | 12 |
| 2022 | 47.5 | -28.8% | 12 |
| 2023 | 50.8 | +6.9% | 12 |
| 2024 | 53.2 | +4.7% | 12 |
| 2025 | 57.9 | +8.8% | 12 |
| 2026 | 61.1 | +5.5% | 8 |
Average of the monthly index values in each year (2020 = 100). Blank months are excluded.
Frequently asked questions
- How much have mobile phone bill prices changed in Japan over the past year?
- As of August 2026, +1.7% year on year, measured by Japan's official consumer price index (2020 = 100).
- How much have mobile phone bill prices changed in Japan over the past five years?
- +8.9% compared with the same month five years earlier. The index now reads 61.0.
- When were mobile phone bill prices in Japan at their highest?
- The series peaked at 142.4 in January 2000. The latest reading is -57.2% against that peak.
- What is the difference between the index and the yen price?
- This page carries two kinds of number. The index (2020 = 100) measures percentage change over time and is not a yen amount; the yen figure is an actual average retail price from the government's retail price survey. Source: 総務省統計局 消費者物価指数 (e-Stat table 0003427113, nationwide, monthly).