Interlibrary Loans: How Libraries Share Resources
Libraries cannot hold every resource their users need. Researchers and students often request materials that fall outside local collections, especially in academic and research environments.
To meet this demand, libraries operate within shared networks, often through statewide and consortium-based resource-sharing systems that connect institutions and coordinate borrowing and lending.
Interlibrary loans make this possible and extend access beyond what a single library owns.
However, coordinating requests between institutions involves multiple systems, policies, and staff workflows. When these are not aligned, delays and inefficiencies affect both service delivery and user experience.
This guide explains how interlibrary loans (ILLs) work and how libraries manage them in practice.
What Are Interlibrary Loans?
Interlibrary loans are a cooperative service that allows libraries to share resources with one another.
When a user requests an item that their library does not hold, staff can locate it through other institutions and request it from a lending library within a shared network.
This process supports both physical and digital materials, including books, journal articles, and other research content.
It is commonly used by academic libraries and research libraries that rely on member libraries to extend access beyond their own collections.
Interlibrary loan services depend on collaboration between institutions and are often part of statewide, regional, or international resource-sharing networks that connect multiple libraries.
By working with other libraries, each institution can provide access to a wider range of materials without needing to acquire every item locally.
How Interlibrary Loans Work in Practice
Interlibrary loans allow libraries to share resources through a structured process between borrowing and lending institutions. The process begins when a user makes a request for materials that their library does not own.
Staff reviews the request to confirm details, check local holdings, and determine whether the item can be supplied under copyright restrictions or fair use for private study.
Requests for copyrighted material are assessed under established guidelines, which may include provisions under Title 17 of the United States Code. In some cases, a copying order or other reproductions may be limited depending on what the institution reserves for access.
The system then searches partner libraries to find a lending library that holds the item. Libraries rely on shared catalogs, statewide resource sharing systems such as Soutron’s SHAREit, and standardized request workflows to coordinate borrowing and lending.
Once a match is found, staff send the request directly to another library through integrated library systems rather than relying on manual email exchanges.
The supplying library provides the material using suitable delivery methods. Each loan comes with a defined loan period and due date, with the option to submit a renewal request when needed.
Throughout the process, systems track status and movement, which helps participating libraries coordinate activity and maintain visibility at every stage.
Why Interlibrary Loan Services Matter
Interlibrary loan services help libraries meet user needs without expanding every local collection.
When users request journal articles, book chapters, or other reference materials, staff can source them from partner institutions instead of purchasing new copies.
This is especially important for academic libraries and research libraries, where access to specialized content is part of daily work for graduate students, enrolled students, and researchers.
Requests often include rare books, government documents, or audiovisual materials that are not available locally but still required for research.
Shared access allows libraries to rely on existing collections within their network rather than duplicating materials. Staff can respond to requests more efficiently while keeping collections focused on local priorities.
This becomes more important as request volumes grow and access expectations increase.
Common Challenges in Managing Interlibrary Loans
The interlibrary loan process can become difficult to manage when requests move between different systems, policies, and institutions. Several common challenges contribute to this complexity.
Disconnected Systems
Interlibrary loan workflows often span multiple tools that do not connect with each other. Requests may move between catalog systems, external databases, and internal tracking tools, which limits visibility for both staff and the interlibrary loan office.
When systems are not aligned, staff may need to switch between platforms to locate ILL materials or confirm availability. This makes it harder to manage requests efficiently and increases the risk of delays.
Manual Coordination
Many interlibrary loan processes still rely on manual communication. Staff may contact the interlibrary loan team at another institution through email, monitor progress in spreadsheets, and follow up separately to confirm status.
This approach takes time and depends heavily on staff availability. When request volumes grow, manual workflows become harder to maintain and can slow down response times for the wider user community.
Limited Tracking and Status Visibility
Tracking the progress of a request can be difficult without a centralized ILL system. Staff may not have a clear view of where an item is, whether a lending library has responded, or when materials are expected to arrive.
Delays in confirming availability or fulfillment can affect turnaround times and slow the ability to fill requests efficiently. Users may also need to contact the interlibrary loan office directly for updates, which adds to staff workload.
Policy and Process Differences
Interlibrary loans involve coordination between institutions that follow different rules and policies. Loan periods, delivery methods, and access conditions can vary between libraries.
Some requests may be refused if supplying the item would violate copyright restrictions or if the material is not authorized for sharing. These differences require careful handling to avoid copyright infringement while still meeting user needs.
Libraries often align with guidelines from organizations such as the Reference and User Services Association (RUSA), a division of the American Library Association, and the International Federation of Library Associations and Institutions (IFLA), which adds another layer of coordination.
How Modern Systems Improve Interlibrary Loans
Modern interlibrary loan workflows are easier to manage when libraries use statewide and consortium-based resource-sharing systems such as SHAREit. These systems bring request management, tracking, and communication into one shared environment.
- Centralized request management allows staff to handle each interlibrary loan request in one place, rather than switching between systems or relying on email exchanges.
- Real-time tracking and availability help staff confirm whether materials can be supplied and monitor status without manual follow-ups.
- Integration with catalog and circulation systems connects requests to the home library and partner institutions.
- Automated notifications keep users informed while requests move forward, which reduces the need for staff intervention.
- Improved visibility through the request lifecycle helps staff track interlibrary loan materials, manage fulfillment, and handle exceptions under certain conditions, including compliance with copyright law.
These capabilities reduce manual work, support faster turnaround, and help libraries coordinate resource sharing more effectively between participating institutions.
How Soutron Supports Interlibrary Loan Management
Many libraries in the United States still manage interlibrary loan requests using separate tools and manual processes. This creates delays, repeated work, and gaps in request tracking, especially in statewide networks and consortia.
SHAREit by Soutron supports interlibrary loan workflows for U.S. statewide and consortium-based resource sharing networks. The platform connects hundreds of libraries and consortia in multiple states and manages borrowing and lending within a single system.
Staff can search multiple collections through a single interface, which reduces the need to switch between systems.
Requests move through automated workflows, and libraries can route requests to multiple lenders without system-imposed limits, which improves fulfillment and reduces turnaround time.
Staff can manage requests, track status, and monitor activity in one place, while users can submit requests and check updates through a web interface.
Integration with standards such as NCIP supports communication between systems, and reporting tools provide visibility into request volumes, fulfillment, and turnaround times.
Improve Resource Sharing With the Right System
Interlibrary loans depend on libraries working together as a connected system. The ability to request, supply, and track materials between institutions relies on clear coordination and shared workflows.
Systems that support this coordination make it possible to manage interlibrary loans at scale without making workflows more complex.
SHAREit by Soutron Global supports interlibrary loan services for U.S. statewide, Canadian provinces, and consortium‑based networks, which help libraries connect collections, manage requests, and improve visibility within a single shared platform.
With the right tools in place, libraries can respond to user needs more efficiently while continuing to rely on shared access instead of expanding every collection.
Request a demo to see how SHAREit supports statewide resource sharing.
FAQs About Interlibrary Loans
What is the difference between ILL and document delivery?
Interlibrary loans (ILL) involve borrowing physical or digital materials from another library, while document delivery usually refers to supplying copies of articles, book chapters, or other materials directly to the user without requiring a return.
Can digital materials be shared through interlibrary loans?
Yes, libraries can share some digital materials, such as articles or book chapters, through interlibrary loans, provided the request complies with copyright law, the Interlibrary Loan Code for the United States, and any applicable licensing or reproduction limits.
Do all libraries participate in ILL networks?
No, not all libraries participate in interlibrary loan networks. Participation depends on institutional policies, available resources, and whether the library is part of a consortium or cooperative system.
