Spend Under Management Calculator
Measure your procurement efficiency and identify cost-saving opportunities
Spend under active control via negotiated contracts, preferred suppliers, or approved purchasing processes
Industry benchmark for SMBs: 60-80%
Your SUM Results
How to Use This Tool
- Enter your total annual procurement spend (all outgoing funds for business goods, services, and inventory).
- Input your managed spend: the portion of procurement spend under active control via negotiated contracts, preferred vendor agreements, or approved purchasing processes.
- Set your target Spend Under Management (SUM) percentage (industry benchmarks for small businesses range from 60% to 80%).
- Select your business's operating currency from the dropdown menu.
- Click the "Calculate SUM" button to generate your detailed results breakdown.
- Use the "Reset" button to clear all inputs and start over, or "Copy Results" to save your output to your clipboard.
Formula and Logic
Spend Under Management is calculated using the following core formula: (Managed Procurement Spend ÷ Total Procurement Spend) × 100.
Unmanaged spend is derived by subtracting managed spend from total procurement spend. The SUM gap represents the difference between your target SUM percentage and your actual calculated SUM.
Potential annual savings assume a 5% cost reduction on unmanaged spend if the gap to target is closed, reflecting typical savings from consolidating vendor contracts and reducing maverick spend.
Practical Notes
For e-commerce sellers, include inventory purchases, shipping costs, and third-party service fees in total procurement spend calculations.
Traders and wholesale businesses should count raw material purchases, logistics costs, and customs fees as part of managed spend if covered by existing supplier agreements.
Small business owners can improve SUM by consolidating duplicate vendor contracts, setting up preferred supplier lists, and implementing purchase order approval workflows.
Maverick spend (unmanaged spend from unauthorized vendors) typically accounts for 20-40% of total procurement spend for businesses without active SUM tracking.
Why This Tool Is Useful
Spend Under Management is a key procurement efficiency metric for businesses of all sizes, from solo e-commerce sellers to mid-sized trading firms.
It helps identify how much of your spending is optimized versus wasted on unapproved vendors or unnegotiated rates.
Tracking SUM over time lets you measure the impact of procurement policy changes and vendor consolidation efforts.
E-commerce sellers and traders can use SUM data to negotiate better volume discounts with high-spend vendors.
Frequently Asked Questions
What is a good Spend Under Management percentage?
Most small and medium businesses should aim for a SUM between 60% and 80%. Enterprises often target 85% or higher. Lower percentages indicate high maverick spend and missed cost-saving opportunities.
Does SUM include payroll or rent?
No, SUM only covers procurement spend: goods, services, inventory, and materials purchased for business operations. Fixed costs like rent, payroll, and utilities are excluded from calculations.
How often should I calculate SUM?
Calculate SUM quarterly to track trends, or monthly if you have high procurement volume. Align calculations with your fiscal quarter end for easier alignment with annual budgeting processes.
Additional Guidance
Start by auditing your last 12 months of procurement spend to get accurate total and managed spend figures.
Categorize your managed spend by vendor and category (e.g., inventory, software, logistics) to identify high-impact optimization areas.
Use your SUM gap data to prioritize vendor negotiations: focus on the largest unmanaged spend categories first for maximum savings.
Revisit your target SUM annually as your business scales and procurement processes mature.