Advertising
Amazon ACoS benchmarks for food and drink: context before targets
Why a universal ACoS benchmark can mislead, and how to set a target from margin, TACoS and the role of each campaign.
The short version: protect buyability, stock and contribution first; make each material action measurable; and keep the commercial decision connected to the evidence.
There is no useful universal ACoS target
A brand asking whether its ACoS is good usually receives a percentage without enough context. That number may describe a mature branded campaign, a launch, a category-discovery campaign or an account with fundamentally different product margins.
ACoS is advertising spend divided by attributed advertising sales. It is a useful efficiency measure, but it does not tell you whether the sale was incremental, whether organic sales moved or whether the order remained profitable after every other cost.
Begin with the contribution model
Set the maximum allowable advertising cost from the product economics. Start with selling price net of VAT where applicable, then subtract product cost, Amazon fees, fulfilment, storage, expected returns, promotions and subscription funding.
The remaining contribution creates the boundary for advertising. A 25% ACoS can be attractive for one ASIN and loss-making for another. Using one account-wide benchmark hides that difference.
Read ACoS alongside TACoS
TACoS divides advertising spend by total sales. It helps show whether paid activity is supporting broader account growth or simply taking credit for demand that already existed.
If ACoS improves while TACoS rises and organic rank falls, the account may be becoming more dependent on advertising. If launch ACoS is temporarily high while organic visibility and total contribution improve within guardrails, the spend may be doing its job.
Give each campaign a role and a stop rule
A branded defence campaign, competitor campaign, generic category campaign and product-launch campaign should not share the same success rule. Document the hypothesis, target query, budget, maximum order cost and review date for each.
Then review search-term waste, attributed sales, total sales, contribution and organic movement together. The objective is not the lowest possible ACoS. It is profitable, controlled growth with a clear explanation of where the next pound should go.