If you ask a food and beverage founder what their Cost of Goods Sold (COGS) is, they will likely point to their Bill of Materials (BOM). They will add up the cost of the raw ingredients, the packaging, and perhaps a flat co-packing fee, and arrive at a number.
But in almost every case, that number is wrong. And for a growing CPG brand, an inaccurate COGS calculation isn't just a rounding error—it's the difference between a profitable product line and one that quietly bleeds cash with every production run.
During our recent interviews with CPG operators, this theme emerged repeatedly. As one founder of a fast-growing beverage brand told us: "We did our first production run, and we realized the COGS were a little high. The honey was too much, the coconut water was too much. We had to go back to the drawing board and reformulate entirely."
The problem is that a static BOM represents the ideal cost of a product. True COGS represents the actual cost of producing it in the real world.
The Hidden Costs Missing From Your BOM
When you rely solely on a spreadsheet BOM to calculate your margins, you are systematically undercounting the true cost of production. Here are the three biggest hidden costs that eat into food manufacturing margins:
1. Yield Loss and Production Waste
Ingredients do not translate 1:1 from raw material to finished good. If you buy 500 lbs of organic strawberries, you do not get 500 lbs of usable fruit. Washing, hulling, and processing all result in yield loss. Furthermore, processes like freeze-drying or concentrating juice involve significant moisture loss.
If your BOM assumes a 100% yield, your COGS calculation is artificially low. You must factor the cost of the wasted material into the cost of the finished product.
2. Co-Packer Inefficiencies
Co-packers are rarely perfect. Another founder shared a painful lesson: "They didn't follow our batching instructions at all... they started with freezing water and frozen fruit, and put the honey last. There's no way it melts."
When a co-packer ruins a batch, miscalibrates a fill line (resulting in over-pouring), or damages packaging during transit, those costs often fall back on the brand. If your COGS model assumes a flawless production run every time, you are ignoring the reality of outsourced manufacturing.
3. Inbound Freight and Landed Costs
The cost of an ingredient is not just what you pay the supplier; it's what it costs to get that ingredient to your facility. Inbound freight, especially for refrigerated or frozen goods, can add significantly to the per-unit cost. This "landed cost" must be allocated across the raw materials, but in many spreadsheet models, freight is treated as a separate, disconnected expense.
See how Guidance handles this automatically
Guidance is purpose-built for food and beverage brands. Apply to join our design partner cohort and run it live in your operation.
Apply as a Design Partner →Moving from Static to Dynamic COGS
The fundamental flaw with spreadsheet-based COGS is that it is static. It calculates what a product should cost on a perfect day.
To understand true COGS, food brands need a dynamic system that tracks the actual costs incurred during real production runs. This means tying procurement, inventory, and production data together.
When you run a production batch in a connected operations platform like Guidance, the system doesn't just look at the BOM. It looks at the specific lots of ingredients used, the actual yield achieved, the landed cost of those materials, and any waste recorded during the run. It calculates the true, real-time COGS for that specific batch.
Knowing your true COGS is the only way to make informed decisions about pricing, distribution channels, and reformulation. Because you can't optimize a margin you don't actually understand.