Supply Chain & Procurement calculator

Dual Source Savings Calculator

Dual Source Savings measures the cost delta you capture by qualifying a second supplier and shifting volume to the cheaper landed price. Category managers and strategic buyers use it to build the business case for dual-sourcing, which cuts single-source risk while often winning a price too. It reframes a resilience decision in the language finance cares about: margin and dollars. Because it works on landed cost, not just piece price, it keeps freight, duty, and tooling honest in the comparison.

What this calculator does

  • Estimate dual-source savings from avoided shortages and added supplier cost.
  • Use it when dual source savings in supply chain and procurement needs a clean margin number for a supply chain and procurement go / no-go review.
  • It computes the savings margin percentage and the absolute dollar gap between the incumbent and alternate landed costs.

Formula used

  • Margin = gain or available amount - cost or required amount

Inputs explained

  • Landed cost buying from the incumbent supplier:
  • Landed cost buying from the alternate source:
  • Baseline spend on this part:

How to use the result

  • Use it when evaluating a candidate second source, negotiating with an incumbent, or reporting realized savings after a split-award.
  • It compares landed cost only; it does not price in qualification cost, minimum order penalties, or the quality risk of an unproven alternate, so treat the margin as gross, not net.

Current U.S. benchmarks

  • U.S. manufacturing runs at 75.7% of capacity (Federal Reserve, Aug 2026). New factory orders are up 8.5% year over year (Census).
  • USITC reported an average effective tariff statistic — a calculated-duty rate of 12.4% of covered customs value in 2025 across the 57 manufacturing import families MFG Calcs tracks, up from 3.3% the year before. This is a statistical aggregate, not verified cash paid or an entry-specific legal rate. Statutory and effective rates by family are at mfgcalcs.com/tariffs.
  • Sourcing currencies as of 2026-10-02 (Federal Reserve H.10): 6.7038 CNY and 18.192 MXN per USD. Landed-cost comparisons move with these daily rates.

Common questions

  • How do you calculate dual source savings? Subtract the alternate source's landed cost from the incumbent's, then express that gap over the baseline. With an incumbent-equivalent value of 125 against 100, the gap is 25 and the savings margin is 25%.
  • What counts as landed cost here? Landed cost is the fully burdened per-unit cost: piece price plus freight, duty, insurance, and any tooling or packaging amortization. Comparing piece price alone can flip which source is truly cheaper.
  • Is a 25% dual-source saving realistic? It happens, especially when the incumbent has enjoyed uncontested pricing, but many programs land in the single digits. The 25% in the example is the gross margin before qualification and switching costs.
  • Does dual-sourcing always save money? No. Sometimes the second source costs more and you accept it as an insurance premium against a single-source outage. The calculator will show a negative margin in that case, which is still useful to size the premium.
  • Dual-sourcing vs single-sourcing - which is better? Single-sourcing can win on volume price and simplicity; dual-sourcing buys resilience and negotiating leverage, often with a savings margin like the 25% shown. Use the score alongside a supplier risk rating to decide.
  • Should I split the award 50/50? Not necessarily. A common pattern is 70/30 or 80/20 toward the lower-cost, higher-capability source to keep both warm while capturing most of the savings; model each split's blended cost separately.

Related guides

Last reviewed 2026-08-12.