How to Apply for an ISBN/ISSN
The National Library of the Philippines (NLP) is the official ISBN/ISSN agency in the Philippines. If you are a publisher, self-published author, or organization that produces printed or digital publications, you will need to obtain an ISBN or ISSN from NLP. The ISBN (International Standard Book Number) is assigned to books and monographic publications, while the ISSN (International Standard Serial Number) is assigned to serial publications such as magazines, journals, newspapers, and newsletters.
Both ISBN and ISSN assignments are provided completely free of charge by the National Library of the Philippines. These internationally recognized identification numbers enable your publications to be uniquely identified, cataloged, and distributed worldwide. Whether you are publishing your first book or managing a regular journal publication, this guide will walk you through the complete application process for both ISBN and ISSN.
The ISBN system was established by the International ISBN Agency based in London, while the ISSN system is managed by the ISSN International Centre in Paris. NLP serves as the designated national agency for both systems in the Philippines, making it the sole authority for assigning these numbers to Philippine publications. Having an ISBN or ISSN is essential for libraries, bookstores, distributors, and online platforms to properly identify and handle your publication.
The process for obtaining an ISBN or ISSN at NLP is straightforward and applicant-friendly. Authors, publishers, and organizations can visit the NLP office in person to submit their applications and supporting documents. NLP staff are available to assist first-time applicants and answer questions about the process. For publishers with multiple titles, NLP can assign a publisher prefix that allows for efficient management of ISBNs across their catalog.
It is important to note that obtaining an ISBN or ISSN does not constitute copyright registration. Copyright registration is a separate service offered by the NLP Copyright Office. While an ISBN/ISSN identifies your publication for commercial and bibliographic purposes, copyright registration protects your intellectual property rights. Many publishers choose to apply for both ISBN/ISSN and copyright registration simultaneously to fully protect and identify their publications.
What is ISBN? What is ISSN?
- ISBN (International Standard Book Number) — A unique 13-digit identification number assigned to each edition and variation (except reprints) of a book. The ISBN enables publishers, bookstores, libraries, and distributors to identify and order specific editions of books efficiently. It is recognized worldwide and is essential for commercial book distribution.
- ISSN (International Standard Serial Number) — An 8-digit identification number assigned to serial publications that are issued on a continuing basis, such as magazines, academic journals, newspapers, newsletters, annual reports, and other periodicals. The ISSN helps libraries and information systems identify and manage serial publications.
- Why do you need them? — ISBN and ISSN enable worldwide identification and cataloging of publications. They are required by bookstores, libraries, online retailers (such as Amazon), and bibliographic databases to list and manage your publication. Without an ISBN or ISSN, your publication cannot be properly distributed through standard commercial channels.
- Who assigns them in the Philippines? — The National Library of the Philippines (NLP) is the sole authorized agency for ISBN and ISSN assignment in the country. The service is provided free of charge to all Filipino publishers and authors.
⚠ Important: ISBN and ISSN Are Different
ISBN and ISSN serve different purposes and should not be confused with each other. Applying for the wrong type of number will delay your publication process. Please read the following carefully before applying:
- ISBN is for one-time publications (books) — This includes novels, textbooks, cookbooks, children's books, coffee table books, anthologies, research monographs, e-books, and audiobooks. Each title that is published as a standalone work needs an ISBN.
- ISSN is for ongoing serial publications — This includes magazines, academic journals, newspapers, newsletters, annual reports, and any publication that is issued regularly with no predetermined end date.
- Each edition and format of a book needs a separate ISBN — For example, the paperback edition, hardcover edition, e-book (EPUB), e-book (PDF), and audiobook version of the same title each require their own unique ISBN. A revised edition also needs a new ISBN.
- Do NOT use the same ISBN for print and digital versions — A common mistake is using one ISBN for both the printed book and the e-book. Each format must have its own unique ISBN to avoid confusion in ordering, cataloging, and distribution systems.
- An ISSN remains the same across issues — Unlike ISBN, a single ISSN is assigned to a serial title and remains the same for all issues of that serial publication. However, if the title of the serial changes significantly, a new ISSN must be obtained.
Who Needs an ISBN or ISSN?
The following individuals and organizations should apply for an ISBN or ISSN with the National Library of the Philippines:
Publishers
Commercial publishers, university presses, and publishing houses that produce books or serial publications for distribution and sale in the Philippines and abroad.
Self-Published Authors
Individual authors who are publishing their own books independently, whether in print or digital format. You do not need a publishing company to apply for an ISBN.
Educational Institutions
Universities, colleges, and schools that publish textbooks, research journals, academic papers, conference proceedings, or institutional publications.
Government Agencies
National and local government agencies that publish reports, manuals, guidebooks, statistical publications, and other informational materials for public distribution.
Organizations & NGOs
Non-profit organizations, professional associations, and NGOs that publish journals, magazines, newsletters, or book-length publications related to their advocacy or field.
Commercial Distributors
Anyone planning to distribute books commercially through bookstores, online retailers, or library systems needs an ISBN for proper identification and cataloging.
Note: Even if you are publishing a book for limited distribution (e.g., a family history book, a church publication, or a community newsletter), obtaining an ISBN or ISSN is still recommended. It gives your publication a professional identity and ensures it can be properly cataloged in library systems and bibliographic databases both in the Philippines and internationally. Since the service is free, there is no reason not to apply.
ISBN Application: Step-by-Step Guide
Follow these steps to apply for an International Standard Book Number (ISBN) at the National Library of the Philippines. The process is straightforward and the assignment is free of charge.
Prepare the Manuscript or Final Version of the Book
Before applying for an ISBN, you must have a completed manuscript or the final version of your book ready. This includes the title page, copyright page, table of contents, and the full text of the publication. If the book is not yet published, you should at least have a camera-ready copy of the title page and copyright page. The NLP needs to verify the details of your publication before assigning an ISBN.
Fill Out the ISBN Application Form
Obtain and complete the official ISBN Application Form. This form is available at the NLP Philippine ISBN Agency office or can be downloaded from the NLP website. The form requires information such as the book title, author(s) name, publisher name and address, edition, format (paperback, hardcover, e-book), number of pages, language, and subject category. Fill out all fields accurately and completely to avoid delays.
Submit the Form with Required Documents to the NLP Philippine ISBN Agency
Bring your completed ISBN Application Form along with the required supporting documents to the NLP Philippine ISBN Agency office located at the National Library Building in Ermita, Manila. The staff will review your application for completeness and accuracy. If you are a first-time publisher, you will also need to register as a publisher with NLP to receive your unique publisher prefix.
Submit Two (2) Copies of the Published Book (Legal Deposit)
Under Republic Act No. 10066 (National Cultural Heritage Act of 2009), all publishers in the Philippines are required to deposit two (2) copies of every published work with the National Library. This is known as the Legal Deposit requirement. You must submit the two copies once the book is published and printed. If the book is not yet published at the time of ISBN application, you may submit the copies after publication.
Wait for Processing (3-5 Working Days)
After submitting your complete application, the NLP Philippine ISBN Agency will process your request. The standard processing time is 3 to 5 working days. During this period, the agency verifies your publication details and assigns a unique ISBN from the Philippine ISBN range. Processing may take longer during peak periods or if additional information is needed.
Receive Your Assigned ISBN
Once processing is complete, you will receive your assigned ISBN. The ISBN must be printed on the copyright page (verso of the title page) and on the back cover of the book, usually above the barcode. For e-books, the ISBN should appear on the title page or copyright page. The ISBN is typically displayed in the format: ISBN 978-621-XXXX-XX-X. You should also include the corresponding barcode on the back cover for retail distribution. Make sure to double-check the ISBN number for accuracy before sending your book to print, as errors in the printed ISBN can cause problems with ordering and cataloging systems worldwide.
ISSN Application: Step-by-Step Guide
Follow these steps to apply for an International Standard Serial Number (ISSN) at the National Library of the Philippines. The ISSN is assigned to serial publications such as journals, magazines, newspapers, and newsletters.
Prepare at Least Two Issues of the Serial Publication
Before applying for an ISSN, you must have produced at least two issues of your serial publication. This demonstrates that the publication is indeed a serial (ongoing) work and not a one-time publication. The issues should clearly show the title, volume/issue numbering, frequency of publication, and editorial or publishing information (masthead).
Fill Out the ISSN Application Form
Obtain and complete the official ISSN Application Form from the NLP ISSN Centre office or download it from the NLP website. The form requires information such as the serial title, subtitle (if any), publisher or organization name and address, frequency of publication (monthly, quarterly, annually, etc.), first issue date, language, and subject coverage. Ensure all information is accurate and matches the details printed on the publication.
Submit the Form with Sample Copies of the Publication
Bring your completed ISSN Application Form along with two (2) copies of at least two different issues of your serial publication to the NLP ISSN Centre office. The copies should clearly display the title page or cover, the masthead (editorial information page showing publisher, editors, and address), and the table of contents. The NLP staff will review your application and verify the serial nature of the publication.
Wait for Processing (3-5 Working Days)
After submission, the NLP ISSN Centre will process your application within 3 to 5 working days. During this time, the agency verifies your publication details and coordinates with the ISSN International Centre in Paris for the assignment of your unique ISSN. The ISSN will be registered in the international ISSN database (ISSN Portal) for worldwide identification.
Receive Your Assigned ISSN
Once processing is complete, you will receive your assigned ISSN. The ISSN must be printed on each issue of the serial publication, typically on the cover, title page, or masthead area. The ISSN is displayed in the format: ISSN 2945-XXXX. The same ISSN is used for all issues of the serial publication as long as the title remains the same. If the title changes significantly, a new ISSN must be obtained.
Requirements for ISBN Application
Prepare the following documents before visiting the NLP Philippine ISBN Agency. Having complete requirements will ensure faster processing of your application.
| Requirement | Details |
|---|---|
| ISBN Application Form | Completed official ISBN Application Form available at the NLP office or downloadable from the NLP website. All fields must be filled out accurately including book title, author, publisher, format, and edition details. |
| Two (2) Copies of the Book | After publication, two copies of the book must be deposited with the National Library as part of the Legal Deposit requirement under RA 10066. If the book is not yet published, copies must be submitted once printing is completed. |
| Title Page and Copyright Page | A camera-ready copy of the title page and copyright page if the book is not yet published. This should include the book title, author name, publisher name, year of publication, and edition information. If already published, this is included in the deposited copies. |
| Author/Publisher Details | Complete name and contact information of the author and/or publisher, including mailing address, email address, and phone number. For first-time publishers, registration as a publisher with NLP is required. |
| Valid ID of Publisher/Author | A valid government-issued ID of the publisher or author applying for the ISBN. Accepted IDs include Philippine passport, driver's license, UMID, PhilSys (National ID), voter's ID, PRC ID, or any other government-issued identification. |
| Fee | FREE — ISBN assignment is provided free of charge by the National Library of the Philippines. There is no application fee, processing fee, or any other charge for obtaining an ISBN. |
Requirements for ISSN Application
Prepare the following documents before visiting the NLP ISSN Centre. Ensuring complete requirements will speed up the processing of your ISSN application.
| Requirement | Details |
|---|---|
| ISSN Application Form | Completed official ISSN Application Form available at the NLP ISSN Centre office or downloadable from the NLP website. All fields must be accurately filled out including serial title, frequency, publisher, and subject area. |
| Two (2) Copies of at Least Two Issues | Submit two copies each of at least two different published issues of the serial publication. This demonstrates the ongoing nature of the publication and provides the NLP with samples for verification and archival purposes. |
| Masthead or Title Page | The masthead or title page showing editorial information including the publication title, publisher/organization name, editorial board or editor-in-chief name, mailing address, frequency of publication, and volume/issue numbering system. |
| Publisher/Organization Details | Complete name and contact information of the publishing organization, including official address, email address, phone number, and the name and designation of the authorized representative applying for the ISSN. |
| Valid ID of Publisher/Representative | A valid government-issued ID of the publisher or authorized representative applying for the ISSN. Accepted IDs include Philippine passport, driver's license, UMID, PhilSys (National ID), voter's ID, PRC ID, or any other government-issued identification. |
| Fee | FREE — ISSN assignment is provided free of charge by the National Library of the Philippines. There is no application fee, processing fee, or any other charge for obtaining an ISSN. |
Complete Application Example
Below is a sample of what a completed ISBN and ISSN application looks like. Use this as a reference when preparing your own application:
============================================
NLP ISBN APPLICATION - SAMPLE
============================================
Publisher: Malikhaing Aklat Publishing
Type: ISBN (Book)
Title: "Filipino Cooking Made Simple"
Author: Maria Santos
Edition: First Edition
Format: Paperback
Pages: 256 pages
Language: English/Filipino
Documents Submitted:
✓ Completed ISBN Application Form
✓ Camera-ready title page & copyright page
✓ Publisher's valid ID
✓ Two (2) copies submitted after publication
Assigned ISBN: 978-621-XXXX-XX-X
Date Assigned: [Processing: 3-5 working days]
Fee: FREE
============================================
NLP ISSN APPLICATION - SAMPLE
============================================
Publisher: Philippine Academic Press
Type: ISSN (Journal)
Title: "Journal of Philippine Studies"
Frequency: Quarterly
First Issue: Vol. 1, No. 1, January 2024
Language: English
Documents Submitted:
✓ Completed ISSN Application Form
✓ Two (2) copies of at least two issues
✓ Masthead/editorial page
✓ Publisher's valid ID
Assigned ISSN: 2945-XXXX
Date Assigned: [Processing: 3-5 working days]
Fee: FREE
============================================Note: The ISBN and ISSN numbers shown above (978-621-XXXX-XX-X and 2945-XXXX) are sample formats only. Your actual ISBN/ISSN will be a unique number assigned by the NLP Philippine ISBN/ISSN Agency. The "978-621" prefix indicates a Philippine ISBN, while the "978" is the standard EAN prefix for books.
ISBN vs ISSN: Comparison Table
Understanding the differences between ISBN and ISSN is essential to ensure you apply for the correct identification number for your publication. Use the table below for quick reference:
| Feature | ISBN | ISSN |
|---|---|---|
| Full Name | International Standard Book Number | International Standard Serial Number |
| Format | 13 digits (e.g., 978-621-XXXX-XX-X) | 8 digits (e.g., 2945-XXXX) |
| Applies To | Books and monographic (one-time) publications | Serial (ongoing) publications issued periodically |
| Examples | Novels, textbooks, cookbooks, children's books, e-books, audiobooks, research monographs, anthologies | Magazines, academic journals, newspapers, newsletters, annual reports, conference proceedings (series) |
| Number of Digits | 13 digits (ISBN-13) | 8 digits (ISSN) |
| Uniqueness | Each edition/format of a book gets a unique ISBN | One ISSN per serial title (all issues share the same ISSN) |
| Fee at NLP | FREE | FREE |
| Processing Time | 3-5 working days | 3-5 working days |
| International Body | International ISBN Agency (London, UK) | ISSN International Centre (Paris, France) |
| Philippine Agency | NLP Philippine ISBN Agency | NLP ISSN Centre |
Where to Place ISBN/ISSN on Your Publication
Proper placement of the ISBN or ISSN on your publication is essential for identification and distribution. Follow these guidelines to ensure compliance with international standards:
ISBN Placement for Printed Books
- Copyright page (verso of title page) — The ISBN must appear on the copyright page, which is typically the back of the title page. This is the primary and mandatory location for the ISBN.
- Back cover — The ISBN should be printed on the back cover of the book, usually in the lower right corner. It should be accompanied by a barcode for retail scanning purposes.
- Format — Display the ISBN in the standard format with hyphens: ISBN 978-621-XXXX-XX-X. The "ISBN" prefix must always precede the number.
ISBN Placement for E-Books
- Title page or copyright page — For e-books in EPUB, PDF, or other digital formats, the ISBN should be displayed on the title page or copyright page within the digital file.
- Metadata — Include the ISBN in the metadata of the digital file so that e-book platforms and distributors can properly identify and catalog your publication.
ISSN Placement for Serial Publications
- Cover or title page — The ISSN should be printed prominently on the cover or title page of every issue of the serial publication, typically in the upper right corner.
- Masthead — The ISSN should also appear in the masthead or editorial information page of the publication, along with other publication details.
- Format — Display the ISSN in the standard format: ISSN 2945-XXXX. The "ISSN" prefix must always precede the number.
Frequently Asked Questions (FAQ)
1. Is ISBN/ISSN assignment free?
Yes, both ISBN and ISSN assignments are provided completely free of charge by the National Library of the Philippines. There is no application fee, processing fee, or any hidden charges. NLP is the sole authorized agency for ISBN and ISSN in the Philippines, and the service is funded by the government. Be cautious of any third-party services that charge fees for ISBN/ISSN procurement — you can apply directly at NLP for free.
2. Can self-published authors apply for an ISBN?
Absolutely. Self-published authors are welcome and encouraged to apply for an ISBN directly at the NLP Philippine ISBN Agency. You do not need to go through a publishing company or any intermediary. As a self-published author, you will be registered as both the author and the publisher. NLP will assign a publisher prefix to you, and you can use it for all your future publications. This gives you the same professional standing as any commercial publisher when it comes to book identification and distribution.
3. Do I need a separate ISBN for e-book and print versions?
Yes. Each format of a book requires its own unique ISBN. If you are publishing a book in paperback, hardcover, e-book (EPUB), e-book (PDF), and audiobook formats, each of these formats needs a separate ISBN. This is an international standard that enables bookstores, libraries, and distributors to identify exactly which format is being ordered or cataloged. Using the same ISBN for different formats causes confusion in the supply chain and violates ISBN assignment rules.
4. How do I place the ISBN on my book?
The ISBN should be printed in at least two locations on your book: (1) on the copyright page (also called the verso of the title page), and (2) on the back cover of the book, typically in the lower right corner above or near the barcode. For e-books, the ISBN should be displayed on the title page or copyright page. The ISBN should be printed in the standard format: ISBN 978-621-XXXX-XX-X. It is also recommended to include a barcode representation of the ISBN on the back cover for retail scanning purposes. Your printer or book designer can generate the barcode from the ISBN number.
5. Can I apply for an ISBN before the book is published?
Yes, you can apply for an ISBN even before your book is published. This is actually the recommended approach so that the ISBN can be printed on the book during production. You will need to submit a camera-ready copy of the title page and copyright page along with the completed application form. However, you are still required to submit two (2) copies of the published book to NLP once it is printed, as part of the Legal Deposit requirement under RA 10066. The ISBN is assigned based on the publication details you provide, and you should ensure that the final printed book matches these details.
6. What is the Legal Deposit requirement?
The Legal Deposit is a requirement under Republic Act No. 10066 (National Cultural Heritage Act of 2009) that mandates all publishers in the Philippines to deposit two (2) copies of every published work with the National Library of the Philippines. This applies to books, magazines, journals, newspapers, and all other printed publications. The purpose of Legal Deposit is to preserve the country's published heritage and to maintain the Philippine National Bibliography. Failure to comply with the Legal Deposit requirement may affect your ability to obtain future ISBN/ISSN assignments and may result in penalties as provided by law.
7. Can I apply for ISBN/ISSN online?
As of the latest information, the NLP primarily processes ISBN and ISSN applications through in-person visits to the National Library Building in Ermita, Manila. However, NLP has been implementing digital improvements and may offer online or email-based submission options for certain documents. It is recommended to check the NLP official website (web.nlp.gov.ph) or contact the NLP ISBN/ISSN Agency directly for the most current information on online application availability. You may also call or email the NLP to inquire about mailing options if you are located outside Metro Manila. Publishers and authors from the provinces are encouraged to contact NLP ahead of time to arrange alternative submission methods and avoid unnecessary travel.
8. How many ISBNs can I get at once?
You can apply for ISBNs for multiple titles in a single visit to the NLP. Each title (and each format of each title) will need a separate ISBN application. If you are a publisher with a large catalog, NLP can assign a block of ISBNs under your publisher prefix, which allows you to assign individual ISBNs to your publications as they are produced. For self-published authors with a single title, you will typically receive one ISBN per format (e.g., one for paperback, one for e-book). There is no limit to the number of ISBNs you can request, as long as each ISBN corresponds to a legitimate publication.
Important Reminders
- ISBN and ISSN assignments are FREE at NLP — The National Library of the Philippines does not charge any fee for ISBN or ISSN assignment. Do not pay any third-party agent or fixer who claims to process ISBN/ISSN applications for a fee. Apply directly at the NLP office.
- Legal Deposit (RA 10066): All publishers must deposit copies with NLP — Under the National Cultural Heritage Act of 2009, every publisher in the Philippines is legally required to deposit two (2) copies of every published work with the National Library. This is a mandatory obligation separate from the ISBN/ISSN application.
- Each format of a book needs its own ISBN — Paperback, hardcover, e-book (EPUB), e-book (PDF), and audiobook versions of the same title each require a separate and unique ISBN. A revised or updated edition also needs a new ISBN.
- ISSN is for serial/ongoing publications only — ISSN is not for one-time publications. If you are publishing a book (a standalone, non-serial work), you need an ISBN, not an ISSN. ISSN is for publications that are issued regularly on an ongoing basis.
- Processing takes 3-5 working days — Plan ahead and apply for your ISBN/ISSN well before your publication deadline. During peak seasons or holidays, processing may take slightly longer. Submit complete requirements to avoid delays.
- NLP is the sole ISBN/ISSN agency in the Philippines — The National Library of the Philippines is the only authorized agency for ISBN and ISSN assignment in the country. No other government office, private company, or organization is authorized to assign ISBNs or ISSNs for Philippine publications.
Need Help?
If you have questions about the ISBN or ISSN application process, or if you need assistance with your publication, you can contact the NLP ISBN/ISSN Agency directly:
NLP ISBN/ISSN Agency Contact Information
- Office: NLP Philippine ISBN Agency / NLP ISSN Centre
- Address: National Library Building, T.M. Kalaw St., Ermita, Manila, 1000, Philippines
- Operating Hours: Monday to Friday, 8:00 AM – 5:00 PM (closed on weekends and public holidays)
- Website: https://web.nlp.gov.ph
- Services Available: ISBN Application, ISSN Application, Publisher Registration, Legal Deposit, Copyright Registration, Library Services
Tip: If you are located outside Metro Manila, you may contact the NLP by phone or email to inquire about alternative submission methods. Some documents may be accepted via email or courier, depending on current NLP policies. Always confirm the latest procedures before your visit to avoid unnecessary trips.
For Copyright Issues: If you need assistance with copyright registration or intellectual property matters, you may also contact the Intellectual Property Office of the Philippines (IPOPHL) at www.ipophil.gov.ph. IPOPHL handles patent, trademark, and other intellectual property registrations, while NLP handles copyright registration and ISBN/ISSN assignment.
Before You Visit: To make the most of your visit to the NLP, prepare all required documents in advance, bring a valid government-issued ID, and ensure your application form is completely and accurately filled out. Arriving early in the morning (around 8:00 AM when the office opens) is recommended, especially during peak periods such as the beginning of the academic year when many publishers and institutions submit applications.
Disclaimer
This guide is provided for general informational purposes only. The requirements, steps, fees, and procedures mentioned here may vary depending on the NLP you visit. We recommend visiting your nearest NLP first to confirm the specific requirements and process before preparing your documents.