MRO spend is what a company pays for maintenance, repair and operations: the goods that keep buildings, equipment and people working but do not become part of a finished product. Think safety gear, janitorial supplies, tools, lubricants, electrical parts and replacement components.
Each purchase is often small, but the category touches nearly every site and department. This guide explains why MRO spend gets scattered, how to analyze it, and how to bring it under control. We have left out benchmark figures on purpose, because most published numbers come from vendors selling something in this category. Your own data will tell you more.

What counts as MRO spend?
- Maintenance and repair: spare parts, bearings, belts, motors, filters, tools and lubricants.
- Facilities: janitorial supplies, lighting, HVAC parts and plumbing and electrical supplies.
- Safety: gloves, eye protection, first aid and spill control.
- Operations: packaging, tape, labels and other shop consumables.
Companies draw the line differently, and some keep office, IT or lab supplies in separate categories. Choose a definition and keep to it, or your numbers will not compare from year to year. MRO is usually treated as indirect spend.
Why does MRO spend get so scattered?
- Many people buy. Maintenance, facilities and site teams each buy what they need.
- Urgency wins. When a machine is down, the nearest source gets the order and price comes second.
- Item data is messy. The same part can appear under several descriptions, so duplicates are hard to see.
- Small orders avoid scrutiny. Purchasing cards and low-dollar orders often sit outside normal sourcing.
The result is a long list of suppliers for a modest share of spend, which is why MRO often overlaps with tail spend and maverick spend.
How do you analyze MRO spend?
- Pull every source. Combine accounts payable, purchase orders and purchasing card data. Card data is easy to miss and often holds many small MRO purchases.
- Clean up supplier names. Merge variations of the same company so the totals are real.
- Classify the items. A standard scheme such as UNSPSC makes categories comparable. Our UNSPSC code lookup can help.
- Rank suppliers and categories. See who gets the money, and how many suppliers share each category.
- Separate critical from routine. A part that stops a production line needs different handling from a box of gloves.
- Look for the same item at different prices. Compare sites and suppliers for items you can match with confidence.
Our spend analysis guide covers the wider method.
How do you control MRO spend without causing downtime?
- Start with routine items. Janitorial, safety and general supplies carry less risk than critical spares, so consolidate those first.
- Make the right way the easy way. Buyers go around slow systems. Put the catalog where they already work.
- Plan for emergencies. Agree how urgent buys work, so urgency does not become the normal way to order.
- Keep critical spares separate. Decide stock levels and sources with maintenance, not just on price.
- Review it regularly. New suppliers creep back in, so repeat the analysis every quarter or two.
Why look at MRO for small business spend?
In our view, routine MRO can be a practical place to start. Many of these items are standard, so a change of supplier often needs less engineering review than a production part. It can also feed reporting: ExxonMobil’s Tier II guidance shows an MRO supplier and office supplies as examples of indirect spend, though each customer sets its own rules. See our guide to Tier 2 reporting.
Where Hubzone Depot fits
Hubzone Depot supplies MRO, safety, janitorial, facility, office, IT and lab products. Our marketplace puts more than 12 million products inside your procurement system, so buyers keep their approvals and every purchase stays on record. We are an SBA-certified HUBZone and Women-Owned Small Business and a WBENC-certified Women’s Business Enterprise.
Frequently asked questions
What does MRO stand for?
MRO stands for maintenance, repair and operations. It covers goods that keep a business running but do not become part of a finished product.
What is an example of MRO spend?
Common examples include spare parts, tools, lubricants, safety gear, janitorial supplies, lighting and shop consumables.
Is MRO direct or indirect spend?
It is usually treated as indirect spend, because the items support operations and do not go into the finished product. Some companies classify particular items differently.
Why is MRO spend hard to manage?
Many people buy it, urgent needs push price aside, item descriptions vary, and small purchases often sit outside normal sourcing. That leads to many suppliers and duplicate items.
How do you start an MRO spend analysis?
Combine accounts payable, purchase order and purchasing card data, clean up supplier names, classify items with a scheme such as UNSPSC, then rank suppliers and categories.