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Special Data Dissemination Standard

National flag of China
The Republic of China
Price Index: Consumer prices

Last update: Feb 4, 2021

Contact person(s)

Shirley Liu

Department of Statistics, Directorate General of Budget, Accounting & Statistics (DGBAS),

No.2, Guangjhou St., Taipei City, Taiwan 10065, R.O.C.

Phone: 886-2-2380-3460

Fax: 886-2-2380-3465

Internet e-mail:

The Data: Coverage, Periodicity, and Timeliness
Coverage characteristics
5.1.1 Statistical presentation
  • The Consumer Price Index (CPI) is a Laspeyres index(2016=100)covering the whole national territory to measure the price movements of goods and services purchased by households for consumption purpose.
  • The CPI covers 368 representative goods or services. Item prices are collected monthly in 17 cities or counties. Approximately 36,000 prices quotes are obtained each month, and the quotes are obtained mostly by personal interview.
  • The weights are based on the 2016 Household Final Consumption Expenditure of National Income, and will be updated annually from 2018.
  • Seasonally adjusted and unadjusted indices are simultaneously provided.
4.1.1 Periodicity


4.1.2 Timeliness

Around the fifth working day (subject to postponement due to Chinese Lunar New Year or other consecutive public holidays) after the end of the reference month.

Access by the Public
Advance dissemination of release calendar
5.1.3 Advance release calendar
  • In principle, the press release is made around the fifth working day (subject to postponement due to Chinese Lunar New Year or other consecutive public holidays) after the end of the reference month. The date of the next release is announced in each news release.
  • A schedule of the precise release dates for the Calendar year is listed on the website:
Access by the Public
Simultaneous release to all interested parties
5.1.4 Simultaneous release
Dissemination of terms and conditions under which official statistics are produced, including Confidentiality of individual responses
0.1.1 Responsibility for collecting, processing, and disseminating statistics
  • All statistics collected, compiled and published by the DGBAS are governed by the Statistics Act and the Enforcement Rules.
  • The data on the price indices are disseminated by the DGBAS as a service to the public.
Identification of internal government access to data before release
1.2.2 Internal governmental access to statistics prior to release

The information published in the press release and advance copies of the CPI news release are provided to the President, the Premier, the Vice Premier and the Governor of Central Bank of the R.O.C before official release.

Identification of ministerial commentary on the occasion of statistical releases
1.2.3 Attribution of statistical products

No ministerial commentary is released with these data. Bureau of Statistics, DGBAS, Executive Yuan provides its own analytical commentary with these data releases.

Provision of information about revision and advance notice of major changes in methodology
4.3.1 Revision schedule
  • All seasonally adjusted and unadjusted CPIs are routinely subject to revision for up to 3 months after original publication. Indices are revised to reflect late reports and corrections received from respondents. A final estimate will be issued in 3 months after initial publication. Besides, the seasonally adjusted monthly data for the previous 5 years are revised at the time of the release of the April CPI.
  • Major program changes are made on CPI re-basing every 5 years. The weights will be updated annually from 2018. As soon as the re-basing process is finished, the new results will be announced in the upcoming February with data of January.
Dissemination of documentation on methodology and sources used in preparing statistics
5.2.1 Dissemination of documentation on concepts, scope, classifications, basis of recording, data sources, and statistical techniques

Detailed methodological document can be obtained on the website

Dissemination of that support statistical cross-checks and provide assurance of reasonableness
4.2.2 Temporal consistency

The "Price Index" news release publishes a monthly analysis of price movements and summary tables on the CPI.

The e-book “Price Statistics Monthly” is made available immediately at the time of release, disseminates detailed monthly data : (1) basic groups; (2) commodity and service groups; (3) frequency of purchase groups; (4) other special groups; (5) time series of CPI.