10 Inventory Management Best Practices to Keep Stock in Check

In this article...

1. 1. Implement Real-Time Inventory Tracking
2. 2. Organise and Categorise Inventory
3. 3. Conduct Regular Inventory Audits
4. 4. Optimise Inventory Levels
5. 5. Automate Reordering to Prevent Stockouts
6. 6. Improve Supplier Management
7. 7. Use Data for Demand Forecasting
8. 8. Train Staff on Inventory Best Practices
9. 9. Standardise Van Stock and Field Returns
10. 10. Track Carrying Costs and Remove Dead Stock

10 Best Inventory Management Best Practices for Trade Businesses

1. Implement Real-Time Inventory Tracking

Empty shelves in the warehouse while vans are overstocked is a classic sign of missing visibility. When you cannot see what is moving where, you will either overspend on stock or hold up jobs waiting for parts.

How to implement real-time inventory tracking:

• Track every item’s bin location (warehouse), van, and job allocation in a single system.
• Use barcode or RFID scanning so techs record every movement as they pick, transfer or consume parts.
• Sync purchase orders, goods received, returns, and job usage to keep ledger balances accurate.

See it in action: Watch how Simpro tracks stock in real time.

Learn more about inventory tracking software and how it keeps your team productive.

2. Organise and Categorise Inventory

If your team spends more time hunting for parts than installing them, the problem is not the inventory itself but how it is organised. A tidy storeroom and van setup is the foundation of efficiency.

How to organise and categorise business inventory:

• Define a location hierarchy: Warehouse → Aisle → Rack → Shelf → Bin.
• Categorise by trade, family, and attributes such as pipe size or voltage.
• Apply ABC analysis with stricter controls for A items and looser ones for C.
• Mirror the same structure across vans to reduce wasted field time.

For BOP Plumbing and Gas, visibility is everything:

“

Simpro gives us full visibility across three branches, helps us invoice faster, and keeps every technician connected.

Sarah Jamieson, Co-Founder and CFO, BOP Plumbing and Gas

3. Conduct Regular Inventory Audits

Many businesses still rely on one annual stocktake, but by then, discrepancies have already eaten away at profit. Regular audits keep inventory accurate year-round.

How to conduct regular inventory audits:

• Use cycle counting: A items weekly, B items monthly, C items quarterly.
• Reconcile discrepancies immediately and fix the root cause.
• Record adjustment reasons such as lost, damaged or mispicked stock to uncover training or process gaps.

For DT Fire Systems, transparency and accurate data were key to scaling up:

“

We wanted to implement a system that was going to give us complete transparency, allow us to give every detail of every individual asset that we were testing on-site, and give us that edge with the big corporate clients that we were aiming for.

Darren Thorne, Managing Director, DT Fire Systems

4. Optimise Inventory Levels

Holding too much stock ties up valuable cash, while too little stock leads to call-backs and project delays. The goal is to balance both with accurate calculations.

How to optimise inventory levels:

• Calculate a Reorder Point (ROP) for each SKU:
  ROP = (Average Daily Usage × Lead Time in days) + Safety Stock
• Set Min–Max levels by ABC class and adjust for seasonal demand.
• Review quarterly and update if supplier lead times change.

5. Automate Reordering to Prevent Stockouts

Relying on manual checks leaves you exposed to peaks, staff absences and simple oversight. Automation ensures stock flows consistently without relying on memory.

How to automate reordering to prevent stockouts:

• Trigger purchase orders automatically when stock reaches its ROP.
• Consolidate vendor orders by cutoff days to control freight costs.
• Use approved supplier lists and pack sizes to reduce errors.
• Replenish consumables across vans using min–max rules after depot returns.

For Kiely Plumbing, automation delivered efficiency across the entire business:

“

Simpro has helped us cut our estimate creation time by 10 times and reduced admin work by 63%. Our team is now more efficient, and we’ve been able to scale our business by 35% without adding extra overhead.

Sam Kiely, General Manager, Kiely Plumbing

6. Improve Supplier Management

Unreliable suppliers create the need for more safety stock, which drains cash. Managing suppliers strategically gives you predictability and leverage.

How to improve supplier management:

• Record lead times, on-time delivery rates, and fill percentages for each supplier.
• Maintain secondary suppliers for critical A-class items.
• Negotiate service levels, delivery windows, substitution rules, and price breaks.
• Share forecasts so key suppliers can stage stock ahead of peak demand.

7. Use Data for Demand Forecasting

Trades are heavily seasonal, which means inventory levels must align with job patterns. Forecasting prevents both shortages during peaks and wasted stock during lulls.

How to use data for demand forecasting:

• Analyse historic job data by category, region, weather and contract SLAs.
• Factor in seasonal demand such as HVAC peaks in summer or heater igniters in winter.
• Adjust forecasts by crew capacity and upcoming contract wins.
• Review monthly and lock in supplier commitments ahead of busy periods.

For more tips, see our guide to inventory management.

8. Train Staff on Inventory Best Practices

Even the best system will fail if your team does not use it consistently. Training ensures processes are followed and data stays accurate.

How to train staff on inventory best practices:

• Standardise receiving, labelling, picking, transfers, and returns with simple SOPs.
• Train field staff to scan every movement and log usage before leaving the site.
• Reinforce habits with quick video refreshers or visual guides.
• Incentivise compliance by showing how accuracy reduces overtime and rework.

9. Standardise Van Stock and Field Returns

Vans often function as mini-warehouses, but without controls, they become black holes for parts and cash. Standardising stock and returns closes the loop.

How to standardise van stock and field returns:

• Define a core van kit for each trade or crew type with min-max levels.
• Replenish nightly or via scheduled runs, scanning stock in and out.
• Create a simple return process for unused or defective parts so credits are captured.

10. Track Carrying Costs and Remove Dead Stock

Excess inventory actively costs money through storage, insurance, obsolescence and financing. Tracking costs forces better decisions.

Learn more about inventory carrying cost.

How to track carrying costs and remove dead stock:

• Measure inventory carrying costs and set a target percentage of total inventory value.
• Flag items with no movement after 90 or 120 days for markdowns, returns, or kitting into promotions.
• Revisit forecast, reorder points and ABC classes to stop dead stock from building up again.

Stay Stocked and Stay Profitable with Simpro’s Inventory Management

Ready to cut emergencies, speed up jobs and free up cash? With Simpro, your job workflows, purchase orders, warehouses and vans stay connected so stock levels are accurate from quote to invoice. You can track and scan parts in real time, automate reordering with reorder points, standardise van kits, simplify returns, and report on usage, variance and carrying costs.

See how Simpro can transform your inventory management

Get Demo