Multi-Market Inventory — Where to Hold Stock

11 min · video · Advanced

You have AU 3PL with 600 units, US 3PL with 250 units, UK 3PL with 100 units. AU customer demand stays steady. US viral campaign drives 80 sales/day for a week. UK quiet. The question: do you transfer inventory between warehouses or order new directly to where you need it? The answer depends on speed needed, cost, and demand certainty. Today: multi-market inventory management.

The multi-market inventory challenge

Operating across AU + US + UK adds inventory complexity:

Inventory is split across 3 warehouses
Demand varies independently per market
Stockout in one market while surplus in another is a common pattern
Replenishment from supplier (China) takes 14-35 days

The discipline: anticipate demand by region, balance inventory levels, and have rebalancing options when imbalances occur.

Inventory by region: the tracking discipline

Build a per-region inventory dashboard:

SKU	AU stock	US stock	UK stock	AU velocity	US velocity	UK velocity	Days remaining (AU)	Days remaining (US)	Days remaining (UK)
Pet collar	600	250	100	4/day	12/day	2/day	150	21	50
Smart leash	200	100	50	3/day	5/day	1/day	67	20	50

Update weekly. The dashboard reveals:

US "Days remaining" of 21 days < lead time of 25 days = imminent US stockout risk
UK "Days remaining" of 50 days = healthy
AU "Days remaining" of 150 days = significant surplus

Action: order 500 units direct to US 3PL from supplier. Don't transfer from AU (slower + more expensive than direct from supplier).

Allocation strategy: where to send next batch

When ordering inventory from supplier:

Calculate per-region runway (current stock ÷ current daily velocity).
Identify the region with shortest runway (the one running out first).
Order new inventory direct to that region's 3PL.
For remaining surplus order, consider where seasonal demand will spike (e.g., US BFCM coming in 60 days).

For most AU operators, ordering direct from supplier to the destination 3PL is faster + cheaper than transferring between warehouses.

When to transfer vs reorder

Reorder direct (preferred):

Time: 21-35 days from supplier to destination 3PL
Cost: standard supplier shipping + customs duties (Module 20.6)
Best when: lead time allows; need fresh inventory anyway

Transfer from existing warehouse:

Time: 5-12 days warehouse-to-warehouse + customs (if international)
Cost: outbound shipping + customs (might apply if crossing borders)
Best when: urgent need (e.g., 7-day stockout incoming) AND supplier reorder is too slow

For most situations, reordering is the better choice. Transfers are exception cases for urgent gaps.

Surge capacity planning

Three approaches to scaling inventory for surge:

Approach A: 30-day buffer everywhere. Hold 30 days of inventory in each region. Conservative, expensive (more capital tied up), eliminates most stockout risk.

Approach B: 14-21 day buffer + reorder cadence. Hold less inventory, reorder more frequently. Lower carrying cost, slightly higher stockout risk.

Approach C: Asymmetric (largest buffer in highest-volume market). US (highest volume): 30 days. AU (medium): 21 days. UK (smallest): 14 days. Optimised for revenue concentration.

Most AU operators use Approach C. Match inventory weight to revenue weight.

Seasonal asymmetry

Different markets have different peak seasons:

AU: Christmas (December peak)
US: BFCM (Black Friday/Cyber Monday — November) + Christmas
UK: Christmas + post-Christmas sales
EU: similar to UK

This means inventory plans need to anticipate each market's peak:

October: ramp US inventory by 50-80% for BFCM
December: ensure all markets have inventory for Christmas
Late January: consider Lunar New Year supplier delays before reordering

Operators who plan inventory by per-market seasonal calendar avoid stockouts at peak. Those who don't lose 30-50% of seasonal revenue.

!Multi-market inventory dashboard showing per-region stock levels, velocity, days remaining, and reorder triggers Multi-market inventory management requires per-region tracking and seasonal anticipation. Photo: Unsplash / CHUTTERSNAP.

What kills multi-market inventory

Three operator mistakes:

Single global view. Operator looks at total stock across all 3 warehouses. Doesn't see that US is about to stockout. Reorders too late.

No seasonal planning. Doesn't pre-stock for US BFCM. Misses the season.

Cross-warehouse transfers as default. Transferring from AU to US is slow + expensive. Reordering direct is usually better.

Inventory automation tools

For multi-market inventory at A 00k+/month, tools matter:

Cin7: AU-developed multi-warehouse inventory. Real-time sync to Shopify across regions.
Stock&Buy: AU alternative; cheaper.
Brightpearl: Enterprise-tier; for A$500k+/month operations.

These tools provide:

Real-time per-warehouse inventory tracking
Demand forecasting per region
Automated reorder triggers
Multi-currency reporting

Cost: A 00-500/month depending on tool and scale. Worth the cost when running multi-warehouse + multi-market.

Why this matters

Multi-market inventory is the operational discipline that determines whether international expansion produces meaningful revenue or constant frustration. Operators who run per-region tracking + seasonal planning + reorder direct from supplier hit growth targets across markets. Operators who don't experience cyclic stockouts in 2-3 markets per quarter, with cumulative revenue loss exceeding 15-25% of potential.

The discipline is 30 minutes per week (per-region tracking) + 1 hour per quarter (seasonal planning). Tools cost A 00-500/month at scale. The economic benefit: avoiding the lost revenue from stockouts and the operator stress of reactive inventory management.