Maintaining smooth operations and avoiding costly downtime are among the biggest challenges faced by companies involved in production planning. Equally important is controlling inventory levels — too much stock generates unnecessary costs, while too little can halt order fulfillment. The answer to these challenges is the MRP system (Material Requirements Planning). It helps companies understand what materials are needed, in what quantities, and when they should be available to keep production running seamlessly. With this knowledge, you can better assess whether an MRP system is the right solution for your business.
MRP System – What Is It?
In the production planning process, it is difficult to make accurate decisions without clear information on which materials are needed, in what quantities, and at what point they should reach the production lines. This is why MRP systems were created — to structure and streamline the entire flow of information related to material requirements.
Material Requirements Planning – MRP Definition
Material Requirements Planning is the foundation of an efficiently functioning production environment. The MRP system was created to help companies maintain control over this process. Put simply, Material Requirements Planning is an IT system and a set of processes that calculate which materials will be needed to execute the production plan, in what quantities they should be provided, and when they must be available to keep production running smoothly.
In practice, MRP answers the three most important questions faced by every production department: what needs to be ordered or manufactured, how much material is required, and by when everything must be ready. As a result, material requirements planning becomes an organized, data-driven process rather than one based on intuition.
To achieve this level of accuracy, MRP planning relies on three key groups of data. The first is the Master Production Schedule (MPS), which determines what should be produced and when. The second is the Bill of Materials (BOM), a detailed list of components required to build the final product. The third group consists of inventory records, which show what materials are already available and what needs to be purchased or manufactured. Based on this information, the system can precisely plan the entire process and minimize the risk of production downtime.
Key Objectives and Benefits of Implementing an MRP System
Implementing an MRP system delivers a range of practical improvements that directly enhance the stability and efficiency of production processes. The most important benefits result from precise planning and full control over material flows. What are the key advantages of using MRP?
Cost reduction
One of the primary goals of MRP is to reduce excessive inventory levels. With accurate calculations, the company orders only what is truly needed, lowering storage costs and minimizing capital tied up in stock.
Increased efficiency
An MRP planning system automates many stages of production planning, eliminating downtime caused by missing components. This allows production to run more smoothly and enables teams to focus on their tasks instead of constantly “putting out fires.”
Improved on-time delivery
Accurate input data and efficient planning help ensure that customer orders are completed on schedule. This is a key MRP objective — enhancing the predictability and stability of production timelines.
Optimized purchasing
The system enables companies to order raw materials precisely when they are needed. This prevents both premature and delayed purchasing, improves supplier collaboration, and reduces operational costs.
In other words, an MRP planning system helps companies plan production more predictably, reduce costs, and maintain process continuity.
How Does Material Requirements Planning Work?
Understanding how MRP works is essential to fully benefit from its capabilities. Although it may sound complex, in practice the system is based on a straightforward mechanism: it gathers data, processes it according to defined rules, and uses the results to determine what needs to be ordered or manufactured — and when. To better illustrate this, it’s worth looking first at the types of input data an MRP system relies on.
The Foundations of MRP – Input Data
To understand how MRP works, we need to start with the three fundamental pillars on which the entire system is built. These are the MRP input data — without them, an MRP planning system would be unable to perform accurate calculations.
Master Production Schedule (MPS)
The MPS is a plan that defines how many finished products a company intends to produce within a specific time period. It can be compared to a production calendar — it indicates what should be manufactured and when. The MPS sets the direction for the entire system.
Bill of Materials (BOM)
The BOM is essentially a detailed “recipe” for the product. It contains a list of all raw materials, parts, and components needed to assemble the final item. If we imagine the product as a meal, the BOM serves as the recipe specifying ingredients and their quantities.
Inventory Records
This is a set of up-to-date information showing how much material is currently in stock, which purchase orders are already in progress, and how much time is needed for new deliveries to arrive. These records allow the system to assess what the company already has and what will be missing.
The combination of the MPS, BOM, and inventory records gives the MRP system a complete picture of the situation and enables it to determine precisely which actions need to be taken in production and procurement.
The Calculation Process – From Plan to Work Order
With the input data defined, it becomes easier to understand how an MRP system actually operates. MRP begins by calculating and analyzing the requirements derived from the production plan and the product structure.
First, the system determines the gross requirements — the total quantity of components needed to fulfill the production plan. It then compares these values with actual inventory levels and takes into account materials already on order from suppliers. After subtracting the available stock, the result is the net requirements — the precise quantities the company must purchase or produce.
As a result, the MRP system generates specific recommendations in the form of planned production orders and purchase order proposals. Each includes the required quantities and exact dates, allowing production and logistics processes to be fully synchronized.
How Much Does an MRP System Cost?
The cost of implementing an MRP system depends on many factors, so it’s difficult to point to a single universal price. In practice, the final cost is influenced by both the choice of software and the scope of the implementation work. To better understand what determines the price of an MRP system, it’s worth looking at the individual components that make up the entire process.
What Determines the Cost of an MRP System?
The cost of an MRP solution is influenced by several key areas that together create the full financial picture of an implementation. Below are the most important components.
Software licensing
This is the primary cost element. Most often, we offer a subscription-based license (e.g., monthly or annual). A subscription model allows companies to spread expenses over time, which can be beneficial for smaller manufacturers.
MRP implementation costs
Implementation includes a pre-implementation analysis, system installation, configuration, and data migration from existing tools. The more complex the production processes and the larger the volume of data to be transferred, the higher this cost will be. If the company has highly specific processes or requirements, additional extensions or add-ons may be necessary.
Employee training
Even the best system won’t deliver results if the team doesn’t know how to use it. Training is therefore an essential part of every implementation and contributes to the overall MRP cost. It covers both system operation and interpreting planning outcomes.
Technical support and updates
After the system is launched, companies typically choose to purchase ongoing technical support and updates. This is an additional cost, but it ensures security, smooth performance, and continuous system development. In SaaS models, updates are largely automated.
Depending on the size of the company, process complexity, and the scope of functionality, the cost of an MRP system can range from a few to several dozen thousand PLN, and in advanced implementations — even several hundred thousand.
ERP vs. MRP – What’s the Difference and Why Use Them?
Many companies struggle with the question of whether to choose a specialized production planning system or a solution that can support all business processes. To make an informed decision, it’s important to first understand the relationship between ERP and MRP, as well as the specific functions each tool performs.
MRP vs. ERP – Key Differences
Although both systems support production management, their scope of functionality is very different. MRP is a specialized tool focused exclusively on production planning and inventory management. In this sense, it acts like a precise planning department, ensuring that materials are available exactly when they are needed.
ERP (Enterprise Resource Planning), on the other hand, is a much broader solution. It covers the management of all key resources and processes within a company — from production, finance, accounting, and sales to HR, logistics, and service. It can be compared to the nervous system of an organization, connecting all departments and enabling them to work on shared data.
The differences between ERP and MRP stem mainly from their scope: MRP is responsible for material planning, while ERP integrates these activities with the rest of the company’s operations. In practice, MRP within an ERP system is one of the most important modules, but not the only one — it is part of a larger ecosystem.
ERP and MRP are complementary solutions. They provide the greatest value when they are fully integrated, allowing production planning data to flow automatically into enterprise-wide management processes. This is why we offer the DSR 4FACTORY toolset, which combines ERP and MRP into one cohesive environment.
When Is MRP Enough, and When Do You Need ERP?
For many small and medium-sized manufacturing companies, an MRP system is a good starting point. If the main business needs are improving planning, controlling inventory, and eliminating downtime, a specialized tool is often entirely sufficient.
However, as a company grows, the need for full data integration between departments increases. At that stage, it is worth considering a more comprehensive solution. An ERP system connects production with finance, sales, accounting, and logistics, ensuring that all information is available in one place and processes run more smoothly. In this model, the question is no longer “MRP or ERP,” but rather “to what extent,” since the material planning module is often a standard component of ERP systems.
One ERP system that works well as a standalone tool for smaller manufacturing companies is Microsoft Dynamics 365 Business Central.
How to Choose the Best MRP and ERP Solution for Your Production?
We understand that choosing the right MRP system can be challenging. That’s why our offer includes several MRP-class solutions, including MRP 4FACTORY — a tool from a leading IT provider for the manufacturing sector.
We focus on ensuring that MRP is fully integrated and compatible with the ERP system so that data across the company remains consistent and effectively supports process improvement. At IT Vision, we help select solutions that best match the specific needs and workflows of each manufacturing business.
Contact us via the form below to schedule a non-binding consultation.
MRP – Frequently Asked Questions (FAQ)
To make it easier to find the most important information about MRP, we have gathered in one place the answers to the questions most often raised by business owners and individuals planning to implement the system.
What is MRP in simple terms?
MRP (Material Requirements Planning) is a system that helps companies calculate which materials are needed for production, in what quantities, and by when they must be available in order to avoid downtime.
Who is the MRP system designed for?
The MRP system is intended for manufacturing companies — both small and large — that want to improve material planning, control inventory levels, and streamline order fulfillment.
What is the main benefit of implementing MRP?
The most important benefit is increased production predictability, which translates into lower costs, no material shortages, and on-time order completion.
How does MRP differ from ERP?
MRP focuses on production planning and inventory management, while ERP covers all key business processes — from finance to sales and logistics. The best approach is to combine both systems into one integrated ecosystem, which is possible with the Dynamics 365 4FACTORY toolset.
Is MRP implementation complicated?
The level of complexity depends on the size of the company and the complexity of its processes, but most implementations run smoothly if data and procedures are properly prepared.
What data does an MRP system require?
MRP relies on three groups of data: the MPS (Master Production Schedule), the BOM (Bill of Materials), and inventory and delivery information.
IT Vision is an experienced provider of ERP systems, BI solutions, and B2B platforms, operating on the market since 2000. The company has completed over 400 projects worldwide, supporting organizations in their digital transformation. IT Vision’s team of experts combines business and technological knowledge, delivering high-quality implementations based on Microsoft technologies.
