---
type: "Learn"
title: "Samurai Bond In-Depth Guide to Yen-Denominated Bonds Issued in Tokyo"
locale: "zh-HK"
url: "https://longbridge.com/zh-HK/learn/samurai-bond-101013.md"
parent: "https://longbridge.com/zh-HK/learn.md"
datetime: "2026-04-01T09:54:07.728Z"
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  - [en](https://longbridge.com/en/learn/samurai-bond-101013.md)
  - [zh-CN](https://longbridge.com/zh-CN/learn/samurai-bond-101013.md)
  - [zh-HK](https://longbridge.com/zh-HK/learn/samurai-bond-101013.md)
---

# Samurai Bond In-Depth Guide to Yen-Denominated Bonds Issued in Tokyo

A Samurai bond is a yen-denominated bond issued in Tokyo by a non-Japanese company and subject to Japanese regulations.Other types of yen-denominated bonds are called Euroyens and issued in countries other than Japan, typically in London.

## Core Description

-   Samurai Bonds are yen-denominated bonds issued in Japan by non-Japanese entities, designed to tap into the country’s deep savings base, governed under Japanese regulation, and tailored to local investor preferences.
-   They offer issuers the dual benefit of funding diversification and access to stable, buy-and-hold investor demand, but come with additional regulatory, legal, FX, and basis risks compared to traditional home or Eurobond markets.
-   While Samurai Bonds can provide attractive all-in funding and a strategic presence in Japan, achieving success depends on understanding pricing, disclosure requirements, swap mechanics, and investor appetite.

* * *

## Definition and Background

Samurai Bonds are yen-denominated debt securities issued in Japan by borrowers from outside the country. Issuers may include global corporations, financial institutions, sovereigns, and supranationals. These bonds are governed by Japanese law, registered with Japan’s Financial Services Agency (FSA), and distributed mainly to domestic institutional investors. The market for Samurai Bonds began in the 1970s, following Japan’s efforts to internationalize its markets and the yen, providing Japanese investors with high-grade foreign credits and allowing overseas issuers access to Japan’s substantial savings base.

### Key Characteristics

-   **Yen Denomination:** Principal and interest payments are made in Japanese yen.
-   **Regulated Offerings:** Bonds must be registered with the FSA, requiring extensive Japanese-language disclosure and compliance with the Financial Instruments and Exchange Act (FIEA).
-   **Investor Base:** Main investors are Japanese life insurers, banks, pension funds, and, to a lesser extent, retail participants through public offerings or shelf programs.
-   **Documentation:** Prospectus and continuous reporting are primarily in Japanese. Certain professional tranches within the Tokyo Pro-Bond Market can use English documentation.
-   **Clearing and Settlement:** Settlement is managed by the Japan Securities Depository Center (JASDEC).

### Historical Development

The Samurai Bond market started with closely regulated issues from supranationals such as the World Bank. As Japan liberalized its financial markets, the range of issuers expanded. The 1980s saw more corporate and government issuers, taking advantage of competitive yen funding rates. Following a period of low issuance during the 1990s economic downturn, the market revived in the 2010s due to regulatory modernization and monetary policy changes, such as Abenomics and negative interest rates. New issue types, including ESG-themed Samurai Bonds, have since emerged.

### Comparison to Other Yen Bonds

-   **Samurai Bonds:** Issued in Japan to Japanese investors and regulated domestically.
-   **Euroyen Bonds:** Yen-denominated bonds issued outside Japan, using international conventions.
-   **Uridashi Bonds:** Yen or foreign-currency bonds sold mainly to Japanese retail investors.

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## Calculation Methods and Applications

Understanding the pricing and yield calculation of Samurai Bonds is necessary for both issuers and investors.

### Present Value and Bond Pricing

The price of a Samurai Bond reflects the present value of its future cash flows (coupons and principal), discounted at the relevant yen interest rate curve plus the issuer’s credit spread:

-   **Bond Price Formula (Discrete):**  
    ( P = \\sum\_{t=1}^{N} \\frac{C}{(1 + z\_t)^{t}} + \\frac{F}{(1 + z\_N)^{N}} )  
    where ( C ) is the coupon, ( F ) is the face value, ( z\_t ) is the zero-coupon yield for period t, and ( N ) is the number of periods.
    
-   **Accrued Interest:**  
    Calculated with day-count conventions such as Act/Act (ICMA) or Actual/365, which impact settlement amounts.
    

### Yield to Maturity (YTM)

Yield to maturity represents the annualized rate of return for holding the bond to maturity, taking into account coupons, principal redemption, and market price. Japanese market conventions often require annualized adjustments.

-   **Formula:**  
    ( P\_{dirty} = \\sum\_{t=1}^{N} \\frac{C}{(1 + y/m)^{t}} + \\frac{F}{(1 + y/m)^{N}} )

### Duration and Risk Metrics

-   **Macaulay and Modified Duration** assess price sensitivity to interest rate changes.
-   **DV01 (Dollar Value of 01):** Reflects the estimated price change for a 0.01% yield movement.
-   **Convexity:** Measures the curvature of the price-yield relationship, particularly relevant for longer-maturity bonds.

### Credit Spreads

-   **Z-spread:** The constant spread over the benchmark yen yield curve that aligns discounted cash flows with the market price.
-   **Asset-Swap Spread (ASW):** Shows the bond’s excess coupon over the yen swap rate, used in comparison with swap pricing.

### Currency and Swap Applications

Many issuers swap proceeds back to their home currency using cross-currency swaps. The final funding cost is determined by the prevailing JPY cross-currency basis.

-   **All-in USD Cost Example:**  
    ( AIS\_{USD} \\approx \\text{JPY swap rate} + \\text{JPY/USD basis} + \\text{CSA adjustments} )

**Use Cases:**

-   **Issuer Example (Hypothetical):** A European manufacturer, ABC Corp., with yen revenue, issues a Samurai Bond to finance a plant in Japan. Part of the proceeds are swapped to euro, with the remainder left in yen for local expenses. This provides both funding diversification and balance sheet flexibility.

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## Comparison, Advantages, and Common Misconceptions

### Advantages

-   **Access to Japan’s Deep Savings Base:** Samurai Bonds provide access to Japanese insurers, banks, and institutional investors. For example, Apple’s 2015 Samurai Bond secured significant institutional orders.
-   **Funding Diversification:** Samurai Bonds expand the issuer’s investor base beyond USD and EUR markets.
-   **Potential Cost Benefits:** At certain times, favorable yen swap rates may lead to lower all-in borrowing costs.
-   **Reputational Benefits:** Issuing in the Samurai market can elevate an issuer’s standing in Japan.

### Disadvantages

-   **Complex Regulatory Environment:** Requirements include Japanese-language documentation, long approval periods, and unique disclosure standards.
-   **Currency and Basis Risk:** Unhedged yen exposure or a widening cross-currency basis may adversely affect cost savings.
-   **Market Preferences and Liquidity:** The Samurai Bond market primarily accepts higher-grade, traditional structures. Liquidity is lower compared to major global bond markets.

### Common Misconceptions

-   **Samurai vs. Euroyen Confusion:** Euroyen Bonds are offshore yen-denominated, aimed at international buyers, and not the same as onshore, FSA-registered Samurai Bonds.
-   **BoJ Policy Does Not Guarantee Cheap Funding:** Low Bank of Japan rates do not ensure a low yield for every issuer; credit spreads and swap costs also play a role.
-   **Eligibility Is Not Restricted to Sovereigns or Large Corporates:** BBB-rated companies and agencies may also issue Samurai Bonds.
-   **Operational Aspects Are Important:** Tax, withholding, and settlement matters require careful documentation and planning.

**Table: Samurai Bonds vs. Other Bonds (Key Differences)**

Bond Type

Currency

Issuing Location

Regulator

Investor Base

Key Docs Language

Samurai Bond

JPY

Japan

FSA/JFSA/JSDA

Japan (Inst./Retail)

Japanese/English

Euroyen Bond

JPY

London/Offshore

None/JFSA-lite

Global

English

Uridashi Bond

JPY/FX

Japan

FSA/Distributor

Japan (Retail)

Japanese

Yankee Bond

USD

USA

SEC

US Institutions

English

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## Practical Guide

### Steps to Conduct a Samurai Bond Investment

**Clarify Objectives:**  
Determine the rationale for investing in or issuing a Samurai Bond, such as yen income, diversification, or connecting with Japan’s institutional market. Decide if this is a strategic or tactical choice.

**Assess Credit Quality:**  
Perform due diligence. Examine issuer financials, credit ratings, covenant protections, and their alignment with Japanese norms.

**Compare Yields and Funding Alternatives:**  
Compare Samurai yields and overall funding costs to Euroyen, USD, or home-currency bonds, including swap and tax considerations.

**Manage Currency and Interest Rate Risk:**  
Non-yen investors should consider hedging strategies for currency and rate risk, and stress-test exposure to market movements.

**Market Timing and Tenor Selection:**  
Monitor liquidity, the yen yield curve, and significant events such as Bank of Japan policy announcements, fiscal years, or holidays.

**Engage the Right Dealers:**  
Work with dealers knowledgeable in Japan’s bond market for both primary issuance and secondary market liquidity.

**Tax and Regulatory Checks:**  
Verify withholding tax positions, regulatory requirements, and proper onboarding for settlement.

**Monitor and Rebalance:**  
Continuously review spreads to JGBs, yen exchange rates, and the issuer’s credit profile. Be mindful of potential constraints on secondary market liquidity.

### Case Study: Apple’s 2015 Samurai Bond

In 2015, Apple Inc. issued a multi-tranche Samurai Bond with a total value over JPY 200,000,000,000. This marked Apple’s entry into the yen market, where swap-adjusted funding was competitive compared to US dollar issuance. Japanese institutions, including life insurers and asset managers, showed substantial demand. Apple’s proceeds were mostly swapped into US dollars, balancing its global financing strategy and strengthening its relationship with Japanese investors.

### Case Study: The World Bank’s Benchmark Program

The World Bank has been a recurring Samurai Bond issuer since the 1970s, offering high-grade yen assets across various maturities. These transactions match Japanese institutional demand for duration and safety while providing the World Bank with diversified funding channels. The program exemplifies how regular Samurai issuance can foster reliable access to Japan’s market.

* * *

## Resources for Learning and Improvement

-   **Authoritative Books:**
    -   _The Handbook of Fixed Income Securities_ by Frank J. Fabozzi
    -   _Fixed Income Securities_ by Bruce Tuckman & Angel Serrat
-   **Regulatory and Market Data:**
    -   Japanese FSA and Ministry of Finance official sites for current regulations
    -   JSDA statistics and issuer data via EDINET
-   **Market Platforms:**
    -   Bloomberg and Refinitiv for live market data
-   **Academic Research:**
    -   JSTOR and SSRN for empirical research on Samurai Bonds
-   **Legal Insights:**
    -   Guidance from Clifford Chance, Anderson Mori & Tomotsune, and other firms for compliance
-   **Case Documents:**
    -   Public filings from World Bank, KfW, Mexico, and others
-   **Professional Training:**
    -   CFA fixed income curriculum
    -   ICMA and JSDA training programs
-   **Industry News:**
    -   IFR, Nikkei Asia, Bloomberg Credit, Euromoney

* * *

## FAQs

### What is a Samurai Bond?

A Samurai Bond is a yen-denominated bond issued in Japan by a non-Japanese entity, under Japanese regulation, and mainly targeting Japanese institutional investors.

### Why do issuers choose Samurai Bonds?

Issuers select Samurai Bonds to access Japan’s savings, diversify their funding, potentially reduce borrowing costs, and improve their reputation in the Japanese market.

### How are Samurai Bonds priced and what affects their yield?

Samurai Bonds are typically priced over Japanese Government Bonds (JGBs) or the yen swap curve. Yields depend on the issuer’s credit quality, issue size, investor demand, and swap market levels.

### How do Samurai Bonds differ from Euroyen and Uridashi Bonds?

Samurai Bonds are offered onshore in Japan under local rules. Euroyen Bonds are offshore and follow international standards. Uridashi Bonds, often sold to retail investors in Japan, may be yen- or foreign-currency-denominated.

### What is the typical tenor and minimum size for a Samurai Bond?

Samurai Bonds usually have tenors of 3 to 10 years. Standard issue sizes range from JPY 10,000,000,000 to JPY 30,000,000,000, with larger amounts for major issuers.

### What risks do investors and issuers face with Samurai Bonds?

Risks include currency fluctuations, interest rate changes, basis swap movements, liquidity, and compliance with Japanese tax and regulatory frameworks.

### How liquid is the Samurai Bond secondary market?

Liquidity is generally reasonable for benchmark, high-quality issuers, but may be lower than for USD or EUR bonds due to buy-and-hold investor behavior.

### Can retail investors participate in Samurai Bonds?

Direct retail access is limited and usually only possible when the issue is structured for public sale with the requisite documentation.

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## Conclusion

Samurai Bonds serve as a bridge between global issuers and Japan’s significant pool of institutional savings, offering funding diversification and stable, long-term yen capital. To successfully enter this market, issuers and investors must be familiar with Japanese regulatory processes, documentation practices, and currency swap dynamics. A balanced approach to credit, currency, and liquidity risks—supported by professional advice—is key to realizing the strategic potential of Samurai Bonds. Numerous resources, from regulatory documents to professional courses, are available for those seeking to deepen their understanding or participate in this international debt market segment.


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