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Central Bank Total Assets (JPY)

Total assets on the central bank's balance sheet, reflecting the scale of monetary policy operations including quantitative easing programs.

Latest reading: 4256697.0 JPY tn · Last updated: · Source: BoJ/Statistics Japan

Category: Monetary Policy

API Endpoint

/api/v1/announcements/jpy/cb_assets

Use the production OpenAPI schema for the authoritative REST route metadata.

https://fxmacrodata.com/api/openapi.json

Browse the full endpoint reference

Compare Central Bank Total Assets across all supported currencies →

About Central Bank Total Assets (JPY)

Japan's central bank total assets represent the size of the Bank of Japan's balance sheet, including domestic and foreign securities, loans to banks, and gold. Balance sheet expansion is the mechanism of quantitative easing (QE).

Why FX traders watch it

A rapidly expanding central bank balance sheet (QE) injects liquidity into the financial system and typically weakens the jpy. Balance sheet reduction (QT, or quantitative tightening) is the opposite—draining reserves and supporting the jpy.

How to interpret the data

Accelerating balance sheet growth is jpy-negative as it signals monetary easing. Declining total assets indicate QT is underway, which is restrictive and tends to support the jpy all else being equal.

Historical Central Bank Total Assets (JPY)

Source: BoJ/Statistics Japan  ·  Weekly  ·  JPY tn

Data provided by FXMacroData via the /api/v1/announcements/jpy/cb_assets endpoint. For access, see pricing.

Data Source

Primary Source

BoJ/Statistics Japan

Official Series ID

BS01'BCBSBS01

Data Format and Properties

Data Frequency

Weekly

Unit of Measure

JPY tn

JSON Response Structure

The endpoint returns a chronological list of observations in JSON format. 

{
    "currency": "JPY",
    "indicator": "cb_assets",
    "has_official_forecast": false,
    "start_date": "2023-01-01",
    "end_date": "2023-12-31",
    "data": [
        {
            "date": "2024-07-01",
            "val": 4.2,
            "announcement_datetime": 1722456000
        }
    ]
}

Request Parameters & Usage

Parameter Required Format Description
start_date NO YYYY-MM-DD Optional lower bound for the requested history.
end_date NO YYYY-MM-DD Optional upper bound. Defaults to the current date.
api_key CONDITIONAL string Required for non-USD announcement requests. USD announcement requests are public without an API key.

Example Usage

To retrieve Central Bank Total Assets data for JPY from 2023: 

GET https://fxmacrodata.com/api/v1/announcements/jpy/cb_assets?start_date=2023-01-01&end_date=2023-12-31&api_key=YOUR_API_KEY

Frequently Asked Questions

How often is Japan Central Bank Total Assets updated?
Central Bank Total Assets for Japan is released on a weekly schedule by Bank of Japan (or the relevant national statistics agency). FXMacroData ingests each new value within seconds of the official publication and exposes the exact announcement timestamp on every record.
What unit is Central Bank Total Assets reported in?
The series is published in JPY tn. The exact unit is also returned on every API response under the indicator metadata.
Where does FXMacroData source Japan Central Bank Total Assets data?
Data is fetched directly from Bank of Japan or the official national statistics publication for Japan. The source URL is preserved on every announcement record so downstream consumers can trace the value back to its primary release.
How do I query Central Bank Total Assets for Japan via the API?
Issue a GET request to /api/v1/announcements/jpy/cb_assets?api_key=YOUR_API_KEY. The response contains a chronological list of observations with values, release dates, and announcement timestamps. USD announcement data is public; other currencies require a Professional API key.