If you’ve ever had a product oversell during a sale, or spent an afternoon reconciling stock counts across two warehouses in a spreadsheet, you already know inventory is where a lot of Shopify stores quietly fall over. It’s not glamorous, and it’s rarely the first thing merchants think about when setting up a store, until the SKU count climbs past a hundred and the native admin starts to feel thin.
This post answers the question we get asked constantly by Australian merchants scaling past their first warehouse or their first few hundred orders a week: is Shopify’s built-in inventory system actually enough, or do I need a dedicated app? The honest answer is “it depends on your SKU count, location count and order complexity”, and by the end of this post you’ll have a clear framework for working out which side of that line you’re on.
We’ll cover exactly what Shopify’s native inventory tools do well, where they genuinely fall short, what third-party apps and ERP-level integrations add on top, and a practical decision framework based on real store characteristics rather than vague advice.
What Shopify’s Native Inventory Tools Actually Do
Shopify’s built-in inventory system is more capable than most merchants realise, and for a large chunk of stores it’s genuinely sufficient. Here’s what’s included natively, no app required.
Per-location inventory tracking
Every Shopify plan supports multiple locations (the exact cap depends on your plan tier), and inventory is tracked separately per location under Settings > Locations. Each location can be a warehouse, a retail store, a 3PL, or a popup, and you can control which locations fulfil which orders. This is set per-product under the Inventory tab, where you tick which locations stock that variant.
Committed, available, on-hand and incoming states
Shopify inventory isn’t a single number, it’s tracked across several states, which trips up a lot of merchants coming from simpler platforms:
- On hand, physical stock sitting at a location, whether it’s sellable or not
- Available, on-hand stock minus anything committed, i.e. what can actually be sold right now
- Committed, stock allocated to unfulfilled orders
- Incoming, stock expected via a transfer or purchase order with a expected arrival date
- Unavailable, on-hand stock that’s been marked as damaged, reserved, or otherwise not sellable
Understanding this breakdown matters because “available” is what drives your storefront stock levels and out-of-stock badging, not “on hand.” A common support ticket we see is a merchant convinced their inventory is “wrong” when really 40 units are sitting in committed against unfulfilled orders.
Low stock alerts and notifications
Shopify can notify you (via email or the admin) when inventory for a variant drops below a threshold you set per product, per location. It’s basic, there’s no forecasting behind it, it’s a static number, but it works fine for stores that don’t need predictive reordering.
Inventory transfers between locations
Native Transfers (under Products > Transfers, or Inventory > Transfers depending on your admin layout) let you move stock between your own locations, track transfer status, and receive partial shipments against a transfer. This covers the basics of moving stock from a central warehouse to a retail location or a second fulfilment centre.
Inventory history and adjustments
Every inventory change, sales, returns, manual adjustments, transfers, is logged in the Inventory history for each variant, with a reason code and the staff account that made the change. This is genuinely useful for tracking down discrepancies (e.g. “who adjusted this SKU down by 12 units last Tuesday”) without needing a separate audit app.
Purchase orders (Shopify’s newer addition)
Shopify has progressively added basic purchase order functionality natively, letting you create POs against suppliers, mark expected quantities, and receive against them, which then updates “incoming” stock. It’s functional for simple, single-supplier reordering but doesn’t extend to complex supplier management (see below).
Where Native Shopify Inventory Tools Fall Short
This is the part that matters most for anyone deciding whether to look at third-party tools. Native inventory is well-built for what it is, but it has real ceilings.
No demand forecasting
Shopify doesn’t forecast future demand based on sales velocity, seasonality, or lead times. Low stock alerts are a static threshold, not a “you’ll run out in 9 days based on current sell-through” calculation. For stores with slow supplier lead times (imported stock, overseas manufacturing) this is the single biggest gap, you find out you’re low, not that you’re about to be low.
Limited supplier and purchase order management
Native POs handle the basics, but there’s no supplier performance tracking, no multi-supplier cost comparison, no automated reorder point triggers, and no landed cost calculation (freight, duty, FX built into per-unit cost). Any store with more than a couple of suppliers and irregular lead times typically outgrows this quickly.
No barcode-based receiving workflows
Receiving stock against a PO natively means manually entering quantities in the admin. There’s no scan-to-receive workflow, no mobile receiving app, and no automatic discrepancy flagging when a scanned quantity doesn’t match the expected quantity. For a warehouse team receiving pallets, this adds real labour time and error risk.
Weak bundling and kitting support
Shopify doesn’t natively support kitting, where a bundle product’s inventory automatically decrements the inventory of its component SKUs. If you sell a “starter pack” that’s really three individual products boxed together, native Shopify treats it as its own SKU with its own stock count, which you then have to manually keep in sync with the components. This is one of the most common reasons Australian merchants selling bundles, gift sets or multi-packs go looking for an app.
Multi-channel sync gaps at scale
Shopify does sync inventory in near real-time across sales channels connected through its own channel apps (POS, Facebook/Instagram, etc.), but once you’re selling through marketplaces like Amazon, Catch, or a separate retail POS system that isn’t natively integrated, you’re relying on third-party sync tools to avoid overselling across channels.
Limited reporting for complex SKU structures
Native inventory reports (Inventory > Reports, or the Inventory Report in Shopify’s analytics) cover the basics, stock on hand, sell-through, days of inventory remaining on paid plans with the right report access, but don’t offer the kind of ABC analysis, dead stock identification by category, or multi-location comparative reporting that operations teams managing thousands of SKUs typically want.
What Third-Party Inventory Apps Add
The apps that plug these gaps generally fall into a few categories, and it’s worth knowing which one solves your actual problem rather than installing the most popular option.
- Demand forecasting and reorder apps, predict stock-out dates based on sales velocity and supplier lead time, and auto-generate suggested purchase orders
- Full PO and supplier management platforms, track multiple suppliers per SKU, landed costs, supplier lead times and performance history
- Barcode scanning and warehouse apps, mobile scan-to-receive, scan-to-pick, and cycle counting workflows
- Bundling and kitting apps, automatically decrement component stock when a bundle sells, and flag when a bundle can’t be fulfilled because a component is out
- Multi-channel inventory sync tools, keep stock levels consistent across Shopify, marketplaces, and offline POS systems in near real-time
- ERP-level integrations, for larger operations, inventory becomes one module of a broader system (see our Shopify inventory management integrations work) that also handles accounting, procurement and fulfilment in one place
The trade-off is real: every app adds subscription cost, another system to maintain, and another point of failure if the sync breaks. We’ve seen stores install three overlapping inventory apps because nobody audited what was already covered natively, that’s wasted spend and unnecessary complexity for no extra accuracy.
A Practical Framework: When Is Native Enough?
Rather than a blanket recommendation, run your store against these checkpoints. The more of these that apply, the stronger the case for a dedicated app or integration.
Stay on native tools if most of these are true:
- Fewer than roughly 200-300 active SKUs
- One or two stock locations
- A single or small number of reliable suppliers with predictable lead times
- No bundled/kitted products, or very few
- Selling only through Shopify’s own storefront and connected channel apps (POS, social)
- Order volume that doesn’t require daily bulk PO generation
Look at a dedicated app when any of these show up:
- You’re manually forecasting stock-outs in a spreadsheet because low stock alerts aren’t giving you enough lead time
- You sell bundles or kits and are manually adjusting component stock to keep it accurate
- You’re receiving stock via barcode/pallet at volume and data entry errors are causing stock discrepancies
- You sell across 3+ channels (marketplaces, wholesale, offline POS) and have had an oversell incident
- You have more than 3-5 active suppliers with different lead times and reorder points
Consider ERP-level integration when:
- Inventory needs to flow through to accounting (COGS, stock valuation) automatically
- You operate multiple warehouses or 3PLs with complex allocation rules
- You need inventory, purchasing, and financial reporting to live in one connected system rather than three apps syncing to each other
A simple, low-risk way to test this: run your current process for one restock cycle and count how many manual workarounds, spreadsheets, manual bundle adjustments, guesswork on reorder timing, you’re relying on. If it’s more than one or two, that’s your signal.
When to Bring in a Specialist
Inventory decisions have a habit of compounding, the wrong app choice, or a poorly mapped integration between Shopify and your accounting or ERP system, can create stock discrepancies that take weeks to untangle. If you’re weighing up native versus third-party tools, or you’ve already got an app that isn’t syncing cleanly with your other systems, it’s worth getting a second opinion before committing to a platform change. Our Shopify inventory management integration work covers exactly this, mapping the right combination of native features, apps, and (where needed) ERP connections to your actual SKU and order complexity, rather than defaulting to whichever app has the most reviews.
FAQ
Does Shopify have built-in inventory forecasting?
No. Shopify’s native low stock alerts are based on a fixed threshold you set manually, not a forecast of future demand. If you want stock-out predictions based on sales velocity and supplier lead times, you’ll need a third-party forecasting app.
Can Shopify track inventory across multiple warehouses?
Yes, natively. Shopify supports multiple locations with inventory tracked separately per location, and you can transfer stock between locations and control which locations fulfil which orders. The limitation is in the reporting and automation layered on top of this, not the basic tracking itself.
Do I need an app to manage product bundles on Shopify?
For true kitting, where a bundle automatically decrements the stock of its individual components, yes. Shopify treats a bundle as its own SKU natively, so you’d otherwise be manually keeping bundle and component stock in sync.
What’s the difference between “on hand” and “available” inventory in Shopify?
On-hand is the physical stock at a location. Available is on-hand minus anything committed to unfulfilled orders (and minus anything marked unavailable). Your storefront stock display and out-of-stock behaviour are driven by “available,” which is a common source of confusion when the numbers don’t seem to match.
How many SKUs before I need a dedicated inventory app?
There’s no hard number, but as a rule of thumb, once you’re past a couple of hundred active SKUs across multiple locations, or you’re managing several suppliers with different lead times, native tools usually start showing cracks. SKU count matters less than complexity, a 500-SKU single-supplier store can run fine natively, while a 100-SKU store with five suppliers and bundles often can’t.
Next Step
If you’re not sure whether your store’s inventory setup is holding you back, a Shopify audit is a straightforward way to get a clear-eyed view of what’s actually costing you time and stock accuracy. Or if you’d rather talk it through directly, book a call and we’ll walk through your specific SKU, location and supplier setup.
