Understanding Retail Attach Rate Percentage
How we calculate. Attach % = attach units ÷ base units × 100. The form uses the same arithmetic as the worked examples on this page. See our methodology and accuracy policy.
Real-world scenario: A typical Retail Attach Rate Percentage case uses attach units 40 and base units 100. Enter the same figures below to reproduce the worked path.
What is Retail Attach Rate Percentage?
A cross-sell KPI for accessories with a hero SKU. Distinct from UPT (all units÷tickets) and store conversion.
- Base = primary item units
- Attach = accessory / add-on units
- Same period
The Formula
Worked Example
Common Use Cases
- Bundle offers: attach performance
- Warranty / care plans: attach %
- Category plays: hero + accessory
Pro Tips
- Define base SKU clearly
- Don’t mix UPT for attach %
- Segment channels
Limitations: Retail Attach Rate Percentage results are educational retail merchandising aids—not accounting, tax, or inventory-system advice. Confirm definitions with your POS, ERP, and brand reporting standards.
FAQ
Same as UPT?
No. UPT is all units ÷ transactions. Attach rate is attach units ÷ base units for a defined pair.
What if base units is 0?
Attach rate is undefined—enter positive base units.
Authoritative References
For retail merchandising and store performance concepts, consult:
- National Retail Federation — retail industry context
- Retail Council — retail operations resources
- Shopify Blog — ecommerce and retail KPI explainers