Dual sourcing

Dual sourcing addresses the key vulnerability of single sourcing, supply disruption risk, while avoiding the complexity of managing many suppliers. Two qualified sources provide a backup option and competitive leverage without the administrative burden of broader multi-sourcing.

Managing dual-source relationships requires decisions about volume allocation. Common approaches include fixed splits (like 70/30), performance-based allocation that shifts share toward better performers, and market-based models where suppliers compete for each order. The chosen model affects supplier behavior and relationship dynamics.

Dual sourcing works best when both suppliers can be genuinely capable and competitive. If one supplier is clearly superior, the secondary source may struggle to maintain capability and motivation at reduced volumes. Dual sourcing also requires that parts from both suppliers be truly interchangeable without quality or performance differences.

The cost of dual sourcing includes qualification and management of two suppliers, potentially reduced volume leverage compared to single sourcing, and complexity in supply planning. These costs should be weighed against risk reduction benefits when designing sourcing strategies.

Frequently asked questions

What is dual sourcing?

Dual sourcing qualifies and maintains two suppliers for the same component or material, balancing supply resilience against operational complexity. It protects against single-supplier disruptions while preserving competitive dynamics, sitting between the risk of single sourcing and the administrative burden of managing many suppliers.

How should volume be split between two suppliers?

Common dual sourcing allocation approaches include fixed splits such as 70/30, performance-based allocation that shifts share toward the better performer, and market-based models where suppliers compete for each order. The choice matters because the allocation model shapes supplier behavior: quarterly performance-based awards, for example, keep both suppliers motivated to earn share through quality, delivery, and price.

When does dual sourcing not work?

Dual sourcing works best when both suppliers can be genuinely capable and competitive. If one supplier is clearly superior, the secondary source struggles to maintain capability and motivation at reduced volumes. The strategy also requires parts from both suppliers to be genuinely interchangeable, without quality or performance differences between sources.

What does dual sourcing cost?

The costs of dual sourcing include qualifying and managing two suppliers, potentially weaker volume pricing than consolidating with one source, and added complexity in supply planning. Those costs should be weighed against the risk reduction benefits when designing the sourcing strategy for each category.

What are examples of dual sourcing in practice?

An electronics manufacturer splitting a memory chip 70/30 kept production running when the primary supplier's fab had a fire, shifting volume to the qualified backup during recovery. Other patterns include allocating stamped brackets based on quarterly performance reviews and sourcing machined housings from suppliers in different countries to hedge regional disruption, currency moves, or trade policy changes.