Inventory management system guide: features and setup

Published Monday 30 March 2026

Table of contents

• What is an inventory management system?
• How inventory management systems work
• Why your business needs an inventory management system
• Types of inventory
• Types of inventory management systems
• Key features of effective inventory management software
• How to set up your inventory management system
• Manage your inventory with confidence using Xero
• FAQs on inventory management systems

Key takeaways

• Implement an inventory management system to automate stock tracking and reduce manual errors, as poor inventory management directly impacts cash flow by tying up capital in unsold goods or losing sales from stockouts.
• Choose perpetual inventory tracking over periodic systems to get real-time stock level updates, which provides better data for decision-making and reduces the risk of overstocking or understocking.
• Set up automated reorder alerts and demand forecasting using historical sales data to maintain optimal stock levels and avoid both excess inventory costs and lost sales from stockouts.
• Integrate your inventory management system with accounting software to automatically sync stock movements with financial records, giving you complete visibility of how inventory affects your cash flow and profitability.

What is an inventory management system?

An inventory management system is software that helps you track, organise, and control your stock from the moment you order it until you sell it. It automates tasks like monitoring stock levels, recording sales, and alerting you when items run low.

While inventory management refers to the overall process of handling stock, an inventory management system is the technology that makes that process faster, more accurate, and easier to scale.

For small businesses, the right system replaces manual tracking with real-time updates, reducing errors and freeing up time you'd otherwise spend on spreadsheets and stock counts.

How inventory management systems work

Inventory management systems follow your stock through every stage of its lifecycle. Here's how the typical workflow operates:

1. Purchase orders: you create orders for new stock, and the system records what's coming
2. Receiving inventory: when stock arrives, you scan or enter items to update your records
3. Storage and tracking: the system monitors where items are stored and current quantities
4. Sales and fulfilment: when you make a sale, stock levels update automatically
5. Reordering: the system alerts you when stock drops below set thresholds

Modern systems use technology like barcode scanning, RFID tags, or cloud-based software to automate these steps. When integrated with your accounting software, every stock movement also updates your financial records, giving you a complete picture of inventory and cash flow.

Why your business needs an inventory management system

Inventory management directly impacts your cash flow and profitability. When stock sits unsold in your warehouse, you lose money in multiple ways:

• lost revenue: unsold items generate no income while tying up your capital
• storage costs: warehousing and inventory accounting add ongoing expenses, with research showing that inventory-related activities can account for more than one-third of the budget in sectors like healthcare
• wasted space: stored items occupy room that could hold faster-moving products
• depreciation risk: stock may deteriorate or become obsolete over time
• security concerns: items could be damaged or stolen, with the average retailer losing 1.6% of sales to inventory shrinkage from theft, errors, and damage

Money tied up in excess inventory could fuel growth elsewhere in your business.

Understocking creates the opposite problem. When demand spikes and you can't fill orders, you lose sales and risk losing customers to competitors—a challenge with direct implications on customer satisfaction and loyalty.

Whether you have too much or too little stock, poor inventory management costs you money. An efficient inventory management system helps you find the right balance.

Types of inventory

Inventory refers to all the goods and materials your business holds for production or sale. Understanding the three main inventory types helps you track and manage each stage of your supply chain:

Raw materials

Raw materials are the basic components used to manufacture your final product. Depending on your industry, these can take up significant storage space and require careful tracking to avoid shortages or waste.

Work in progress (WIP)

Work in progress (WIP) includes goods currently being manufactured but not yet complete. Examples include toys awaiting painting or ceramics that haven't been fired. WIP inventory moves frequently through your facility, making it harder to track without a system.

Finished goods

Finished goods are products ready to be sold to your customers. You may ship them to distributors or sell directly to clients. Tracking finished goods helps you monitor what's available for sale and when to reorder.

Each inventory type has different storage needs, but all three are interconnected. Without enough raw materials, you can't produce finished goods. If demand for finished goods drops, you're left with excess raw materials.

An inventory management system helps you balance all three categories based on actual demand.

Types of inventory management systems

Different businesses need different approaches to inventory management. Understanding your options helps you choose the right system for your needs.

Perpetual vs. periodic inventory systems

The two fundamental approaches to tracking inventory are:

• perpetual systems: update stock levels in real time as transactions occur, giving you constant visibility
• periodic systems: count inventory at scheduled intervals (weekly, monthly, or quarterly), which is simpler but less accurate between counts

Most modern software uses perpetual tracking, which reduces errors and provides better data for decision-making.

Inventory management methods

Beyond tracking systems, businesses use different methods to optimise stock levels:

• just-in-time (JIT): order stock only as needed to minimise storage costs. In the US healthcare sector, for example, JIT has led to annual savings of approximately $3–11 million per hospital
• economic order quantity (EOQ): calculate the ideal order size to balance ordering and holding costs
• materials requirement planning (MRP): schedule production and orders based on demand forecasts
• ABC analysis: prioritise inventory by value, focusing attention on high-impact items

Technology-based systems

The technology you use affects how efficiently you can track and manage stock:

• barcode systems: affordable and widely used, requiring manual scanning
• RFID tracking: faster and hands-free, with costs decreasing over time
• cloud-based software: provides real-time access from anywhere and integrates with accounting tools

Key features of effective inventory management software

When evaluating inventory management software, look for features that save time, reduce errors, and support your growth. Essential capabilities for small businesses include:

• real-time stock tracking: see current inventory levels across all locations instantly
• automated reorder alerts: get notified when stock drops below set thresholds
• demand forecasting: use historical data to predict future stock needs
• multi-location support: manage inventory across warehouses, stores, or sales channels
• accounting integration: sync stock movements with your financial records automatically
• mobile access: check and update inventory from anywhere using your phone or tablet
• barcode or SKU scanning: speed up receiving, counting, and picking with scan-based entry
• supplier management: track vendor details, lead times, and purchase history

The most effective systems combine these features with an interface that's easy to learn and use daily.

How to set up your inventory management system

Setting up an efficient inventory system involves a few key steps. Follow this process to move from manual tracking to automated control.

1. Audit your current inventory. Count your existing stock to get an accurate baseline. Document what you have, where it's located, and identify any pain points in your current process.
2. Choose the right inventory management software. Spreadsheets aren't designed for inventory management and create risks as your business grows, limiting your ability to implement strategies that optimise turnover in inventory and avoid the costs of overstocking. Common problems with spreadsheets include no multi-user access, being error-prone, requiring manual backups, and having limited functionality. Dedicated inventory management software solves these problems and scales with your business. Look for solutions that integrate with your accounting software, run in the cloud, and support your tracking technology.
3. Implement tracking technology. Inventory tracking means knowing exactly what stock you have and where it's located at any time. This is straightforward for small businesses but becomes complex as you scale. Different inventory types present different tracking challenges. Raw materials are generally stationary and easier to count. Work in progress moves frequently through your facility. Finished goods need tracking from warehouse to customer delivery. Common tracking technologies include barcode scanning (the traditional method, still widely used and affordable), RFID tags (faster and more flexible, with costs becoming more accessible), and cloud-based software (provides real-time visibility across all locations).
4. Set up forecasting and reorder points. Demand forecasting helps you predict how much stock you'll need and when. Analyse your sales patterns to identify seasonal trends (which products sell more at certain times of year), growth patterns (whether demand is increasing or declining over time), and external factors (how promotions, holidays, or market changes affect sales). Quality accounting software generates reports from past sales data, helping you spot these patterns and adjust stock levels accordingly.
5. Train your team and go live. Make sure all staff understand how to use the new system. If you have multiple locations, consider starting with a pilot at one site before rolling it out everywhere. Monitor the system closely during the transition.

Manage your inventory with confidence using Xero

Xero's inventory features connect directly to your accounting, so you can see both stock levels and financial impact in real time. This integration helps you:

• track inventory automatically: monitor stock from purchase through sale without manual data entry
• see cash flow clearly: understand how inventory ties up capital and affects your bottom line
• make informed decisions: use reports that connect stock movements to business performance
• manage from anywhere: access your inventory and accounts on-site or remotely through the cloud

When your inventory and accounting work together, you spend less time on admin and more time growing your business. Find out more in our guide to inventory.

Ready to streamline your inventory and improve your cash flow? Get one month free and see how Xero connects inventory management to your accounting for complete business visibility.

FAQs on inventory management systems

Still have questions about inventory management systems? Here are answers to common concerns.

What are the 4 types of inventory management systems?

The four main inventory management methods are just-in-time (JIT), materials requirement planning (MRP), economic order quantity (EOQ), and days sales of inventory (DSI). Businesses also choose between perpetual systems (real-time tracking) and periodic systems (scheduled counts).

How much does inventory management software cost?

Costs vary based on features and business size. Basic cloud-based solutions can start around $50–200 per month for small businesses. Many accounting platforms like Xero include inventory management as part of their subscription, which can be more cost-effective than purchasing standalone software.

Can inventory management software integrate with my accounting software?

Yes, most modern inventory management systems integrate with accounting software. This integration automatically updates your financial records when you receive stock, make sales, or adjust inventory levels. Xero's built-in inventory features keep your stock and financial data in sync.

What's the difference between inventory management and an inventory management system?

Inventory management is the overall process of ordering, storing, tracking, and controlling your stock. An inventory management system is the software you use to execute that process, providing automation, real-time visibility, and reduced errors.

How long does it take to implement an inventory management system?

The time to implement varies. Small businesses with straightforward stock can typically set up cloud-based software in a few days to two weeks. This includes time to count inventory, set up product records, and train staff.