Sourcing Mistakes

Reshoring and Nearshoring Mistakes That Wreck Landed Cost Math

The reshoring and tariff-sourcing errors that quietly flip a sourcing decision the wrong way, with the symptom, root cause, and a numeric fix for each.

The most expensive mistake is comparing ex-works or FOB quotes instead of fully landed cost. Symptom: an Asian supplier looks 22 percent cheaper on paper, then margins evaporate. Root cause is omitting duty, brokerage, ocean and drayage freight, insurance, and inventory carrying cost. On a 40-foot container of parts at 8 dollars each FOB, adding 25 percent Section 301 duty, 0.35 dollars per unit ocean freight, and 6 weeks of pipeline inventory can push true landed cost to 11.20 dollars. Fix: run every option through the Nearshoring Landed Cost and Sourcing Total Cost of Ownership tools so all lines sit in the same 11-dollar column, never a 8-dollar one.

Wrong HTS classification silently corrupts the duty number. Symptom: your Tariff Burden Estimator output disagrees with the broker invoice by thousands per shipment. Root cause is guessing the 10-digit code or reusing a code from a similar-but-different part, which can swing the ad valorem rate from 0 percent to 25 percent plus a Section 301 surcharge. A single misclassified line on a 500,000 dollar annual spend at a 6.5 percent delta is 32,500 dollars a year, plus retroactive liability. Fix: get a binding ruling or a licensed broker signoff on the exact code before you model anything in the Import Duty Scenario Cost.

Treating tariff rates as permanent is a planning error. Symptom: a reshoring business case built on a 25 percent tariff collapses when the rate drops to 7.5 percent or an exclusion is granted. Root cause is modeling a single point estimate rather than a range. Tariff schedules shift with trade actions, exclusions, and elections, so a payback period computed at one rate is fragile. Fix: model at least three tariff scenarios, for example 7.5, 15, and 25 percent, in the Import Duty Scenario Cost tool, and only greenlight a relocation whose Supplier Relocation ROI stays positive at the low end.

Stale or wrong FX rates skew nearshoring comparisons. Symptom: a Mexico quote priced in pesos looks 9 percent better than it will actually invoice. Root cause is using a spot rate from six months ago or ignoring that the supplier prices in USD anyway. A move from 17.2 to 18.8 pesos per dollar shifts a peso-denominated 200-peso part from 11.63 to 10.64 dollars, a 9 percent swing that can decide the sourcing choice. Fix: lock the rate assumption, note the date, and stress test plus or minus 10 percent before trusting any Nearshoring Landed Cost result.

Ignoring minimum order quantity and inventory buffer inflates the apparent low-cost-country win. Symptom: unit cost is lower but working capital balloons and cash gets tight. Root cause is that long ocean lead times force larger safety stock and bigger MOQs. A 45-day transit versus 3-day domestic truck can require 6 to 8 weeks of extra inventory, so at 500,000 dollars annual COGS and a 20 percent carrying rate, that buffer alone costs 12,000 to 16,000 dollars a year. Fix: quantify the buffer with the Lead Time Reduction Value tool and add it as a real line, not a footnote.

Counting only wage rates while ignoring the domestic labor premium and productivity gap is a classic trap. Symptom: reshoring looks impossible because a domestic operator costs 28 dollars per hour versus 6 dollars offshore. Root cause is comparing raw wages, not cost per good unit. If domestic automation and yield cut labor content per part by 60 percent and scrap from 4 percent to 1 percent, the effective gap narrows sharply. Fix: use the Domestic Labor Premium calculator to convert wages into cost per acceptable unit before concluding, and pair it with Reshoring Cost Comparison.

Overlooking country-of-origin and single-source risk understates true cost. Symptom: the cheapest option scores best until a port closure, quality escape, or new tariff on that origin freezes supply. Root cause is modeling expected cost with no risk-adjusted premium. A single disruption that idles a line for 2 weeks on a product doing 40,000 dollars of daily contribution is an 560,000 dollar hit. Fix: apply a probability-weighted risk cost using the Country of Origin Cost Risk and Freight Risk Savings tools, and treat a dual-source or nearshore option that costs 3 to 5 percent more as cheap insurance.

Double-counting or omitting one-time relocation costs distorts payback. Symptom: the Supplier Relocation ROI shows a 9-month payback that reality stretches to 30 months. Root cause is missing tooling transfer, requalification, PPAP, and dual-running costs during the transition, or conversely counting sunk costs already spent. Moving tooling and requalifying a part family can run 80,000 to 250,000 dollars before the first good shipment. Fix: separate recurring savings from one-time spend, amortize the one-time cost across realistic volume, and never let sunk cost enter the forward ROI in the Reshoring Cost Comparison.

Published 2026-07-01.