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Amazon Ads POAS guide

Amazon ACOS and ROAS ignore many seller-specific costs. POAS incorporates FBA fees, referral fees, and COGS so ad decisions match seller P&L.

8 min read

Live profit view

See POAS vs revenue-only reporting

Profit Bid connects store costs to ad spend so you bid on margin — not vanity ROAS.

ACOS flat vs POAS trend (Sponsored Products)

  • ACOS proxy (lower = better revenue)
  • POAS

Falling ACOS can still mask shrinking margin when COGS or FBA fees rise.

Track POAS automatically from your store — upload profit conversions and scale winners with A/C/X labels.

ACOS vs POAS

ACOS = ad spend ÷ ad sales. It is revenue-based and ignores COGS and fulfillment. POAS answers whether ad-attributed units actually earn after all variable costs.

Hybrid merchants advertising Amazon and DTC should not compare ACOS to DTC ROAS — use POAS on each channel with consistent cost rules.

FBA and fee accuracy

FBA fees vary by size tier and season. Keep COGS and fee assumptions updated monthly. Profit Bid recalculates POAS when costs change.

Frequently asked questions

Common questions about this topic — tap to read answers.

Vendor vs Seller accounts?

POAS requires order-level economics. Seller Central integrations are the primary path. Contact us for vendor-specific setups.

Can POAS work with Amazon Attribution?

Use consistent order IDs and attribution tags so off-Amazon traffic maps to the same profit pipeline.

Pricing

Apply this guide — pick your plan

Select a plan and continue to secure checkout — POAS conversion upload included on every tier.

14-day free trial available — start free · full pricing details