How I Audit Our Packaging Spend: A 6-Step Checklist for Procurement Managers

If you're managing packaging procurement, you already know the drill: quotes come in, you compare unit prices, and pick the lowest one. I did that for years. It cost us.

This checklist is for procurement managers or supply chain folks who suspect they're leaving money on the table. It's based on my experience auditing our packaging spend—specifically for corrugated boxes and paper bags—over the past six years, working with 20+ vendors. If your operation is heavily automated with custom die-cuts, some details may differ. But for standard RSC boxes and stock bags, these six steps work.

Step 1: Audit Your Last 12 Months of Orders

Before you even look at a quote, know what you bought. Pull every invoice from the past year—not just the totals, but the line items. I pulled 47 orders from our system and found we'd ordered 12 different box sizes, six of which were variations within an inch of each other.

The workflow:

1. Export all orders from your procurement system.
2. Sort by SKU or size.
3. Flag any sizes ordered fewer than three times (these are consolidation candidates).
4. Calculate total volume per size.

I was shocked to find that 18% of our SKUs accounted for just 3% of our volume. We were paying setup fees and minimums on sizes we barely used. Consolidating to eight standard sizes saved roughly $2,100 in the first year, just in reduced setup charges.

Step 2: Get a TCO, Not a Unit Price Quote

Here's where most people slip. You ask for a price per box, get it, and compare. The real cost is in the fine print. I built a simple spreadsheet after getting burned twice on hidden fees.

Looking back, I should have drilled into the line-item costs earlier. At the time, the unit prices seemed competitive—about $0.08 lower per box than our incumbent. Turned out the 'cheaper' vendor charged $150 per order for palletizing and $75 for a delivery window. On a quarterly order of 5,000 boxes, that added $900 annually—about 11% of the total spend. Not a massive number, but enough that I had to explain the budget variance to my CFO.

The TCO checklist:

• Per-unit price (obvious).
• Order minimums (is there a penalty for ordering below a threshold?).
• Setup/freight: ask for a breakdown—palletizing, delivery, fuel surcharges.
• Payment terms: net 30 is standard; anything less is effectively a cost.
• Rejection/rework policy: what happens if a batch fails quality?

After comparing eight vendors over three months using this TCO approach, we switched suppliers and saved $8,400 annually—17% of our budget. The unit price was actually higher by $0.03 per box. But the new vendor included palletizing and had a no-questions-asked return policy on defective stock. That 'more expensive' option was cheaper.

Step 3: Check Your Board Grade Specifications

This is the step most people skip. You're probably specifying a board grade because 'that's what we always use.' We used 32 ECT (Edge Crush Test) for all our boxes because that's what the previous procurement manager specified. Turns out, for our lighter products (under 15 lbs), 26 ECT was sufficient and met our stacking requirements.

Cost impact: Switching from 32 ECT to 26 ECT for these SKUs saved about 8% per box. Over a year, that was roughly $1,500. The boxes still passed our drop tests and the customers never noticed. I should add that our quality team was skeptical at first, so we did a three-month trial on non-critical orders before rolling it out.

Industry standard reference: According to the Fibre Box Association's Corrugated Packaging Design Guide, ECT ratings correlate to stacking strength, and over-specifying is common in mid-volume operations. The rule of thumb: if your boxes aren't being stacked more than four pallets high, you can often drop one grade without risk.

Step 4: Validate Lead Times Against Your Inventory

Standard lead times for corrugated: 3-5 business days for stock sizes, 10-15 for custom prints. If you're seeing 8+ days for stock, that's a red flag. In Q2 2024, we switched vendors and the new one quoted a 3-day lead time. I kept second-guessing—what if they couldn't deliver? The first two weeks until the initial delivery were stressful.

What actually happened: they delivered on day 4. (Should mention: we'd built in a 3-day buffer on our end, so any delays under 3 days were invisible to operations.) The real surprise wasn't the speed; it was that they called proactively to schedule delivery windows. That alone eliminated our receiving bottleneck. The previous vendor just showed up whenever the truck was loaded.

Checklist for lead time validation:

1. Ask for proof of on-time delivery rate (any vendor worth their salt tracks this).
2. Request three references from accounts of similar volume.
3. Check if 'lead time' starts at order confirmation or credit approval.
4. Is there a rush fee? If so, how much and how fast is 'rush'?

Step 5: Evaluate the 'Green' Claims with Hard Numbers

Sustainability is a big differentiator, but not all claims are equal. We had a vendor claim their boxes were '100% recyclable.' That's a tautology—almost all corrugated is recyclable. Per FTC Green Guides (ftc.gov), environmental claims like 'recyclable' must be substantiated. I asked: 'What percentage is post-consumer content? What's your chain-of-custody certification?' The vague answers killed the deal.

What to ask for:

• FSC or SFI certification number.
• Post-consumer recycled content percentage (not just 'contains recycled fibers').
• Third-party LCA (Life Cycle Assessment) if they claim carbon neutrality.

To be fair, smaller vendors may not have formal certifications but still source responsibly. If a vendor can't produce a certificate, ask for supplier declarations and check if their mill is listed on the FSC certificate database.

My experience is based on orders with mid-sized vendors. If you're sourcing from large integrated mills like International Paper, their certifications are typically public and easy to verify. I've only worked with domestic vendors; I can't speak to how these principles apply to international sourcing, where chain-of-custody documentation can be more complex.

Step 6: Build a 'Red Flag' Checklist for Vendor Proposals

The proposal itself tells you a lot. After analyzing proposals from 20+ vendors over my career, I developed a quick checklist:

• Vague pricing: if the quote says 'pricing based on volume' without a matrix, that's a delay tactic.
• Setup fees hidden: we once had a vendor add a $350 'die maintenance fee' on the second order. It wasn't in the initial quote.
• No delivery terms: if the quote says FOB (Freight on Board) origin without specifying transit time, ask for a delivery schedule.
• 'Free' anything: that 'free design' offer later translated to a $450 charge for 'revisions beyond scope.' The total cost ended up $450 more than the vendor who charged a flat design fee.

Don't hold me to this exact frequency, but roughly half the vendors we've worked with had at least one question mark in their initial proposal. The good ones cleared it up immediately. The bad ones got defensive.

Common Mistakes to Watch For

I've made most of these mistakes. Here's the short list:

1. Ignoring order minimums: minimums aren't just for the first order. Some vendors have quarterly minimums that trigger a surcharge if unmet. We got hit with a $200 fee once.
2. Using the same board grade for everything: as discussed in Step 3, it's worth a review.
3. Not asking for a price lock: corrugated is commodity-priced. Stainless quotes a 30-day price lock; beyond that, market fluctuations apply. We now lock in pricing for the fiscal quarter.
4. Trusting standard lead times: always confirm against your own inventory needs, not just the vendor's 'standard.'