Inventory Management Software for Small Business: Off the Shelf or Built for You

The right inventory management software for small business depends less on which tool is "best" and more on how your stock actually moves. If you sell a few hundred items from one location, a free plan or a well-built spreadsheet can carry you a long way. Once you have several locations, an online store, purchase orders and staff all touching the same numbers, you need a real system, and the main choice is between a subscription product (Zoho Inventory, Sortly, inFlow, Odoo, Cin7, Square for Retail) and a system built around your process.

Short answer: start with an off-the-shelf tool if your workflow looks like everyone else's (buy, store, sell, reorder). Consider a system built for you when you keep bending the software or your team around it: unusual units, kits and bundles, production steps, approvals, or several tools that never quite agree. The rest of this guide shows how to tell which side you are on, what the popular tools cost as of October 2026, and what to check before you sign up.

Is a spreadsheet still enough?

Plenty of small businesses run stock in Excel or Google Sheets, and that is not a mistake at the start. A spreadsheet is free, flexible, and everyone knows how to use it. It is usually fine when:

• You have one location and fewer than a few hundred items (SKUs).
• One or two people update the sheet, and they do it the same day.
• You sell through one channel, or your sales volume is low enough to update counts by hand.
• You reorder by eye and running out occasionally costs little.

Signs you have outgrown your spreadsheet

• Counts disagree. The sheet says 12, the shelf says 7, and nobody knows which sale or delivery was missed.
• You sell in more than one place. A shop counter plus an online store means two sources of truth unless something syncs them automatically.
• Several people edit at once. Overwritten cells and "final_v3" copies are a sign the sheet is doing a database's job.
• You can't answer simple questions fast: what is low, what is on order, what has not sold in 90 days, what your stock is worth.
• Reordering is a memory exercise. If reorder points live in someone's head, a holiday or a sick day means stockouts.
• You need history. Who changed a quantity, when, and why is hard to get from a spreadsheet.

If two or more of these sound familiar, it is time for proper software.

What inventory software should do: a must-have checklist

Before you compare brands, decide which of these you actually need. Most tools cover the basics; the differences show up in the details and in which plan tier unlocks them.

• Item records with variants: size, colour, pack size, and a SKU for each.
• Barcode scanning and labels: scanning with a phone or handheld scanner, and printing your own labels.
• Multi-location stock: shops, a back room, a warehouse, a van, with transfers between them.
• Reorder points and low-stock alerts so the system tells you what to buy.
• Purchase orders and suppliers: create a PO, receive it (in full or part), and update stock and cost.
• Sales sync: connections to your online store, point of sale and marketplaces so a sale anywhere reduces stock everywhere.
• Accounting sync: stock value and cost of goods sold flowing into QuickBooks, Xero or similar.
• Kits, bundles and assemblies if you sell sets or make products from components.
• Users and permissions: who can adjust counts, approve orders, or see costs.
• Audit history and reports: every change logged, plus stock value, slow movers and turnover.

Inventory management software compared (prices as of October 2026)

Prices below were checked on each vendor's pricing page in October 2026 and are in US dollars. Vendors change plans often, so confirm on their site before you buy.

Tool	Free option	Paid plans from	What the entry level limits	Best fit
Zoho Inventory	Free plan: 50 orders/month, 1 user, 1 location	$29/month (billed annually) for 500 orders/month, 3 users, 2 locations	Order volume per month; higher tiers add users and locations	Small sellers with an online store who want a low-cost start
Sortly	Free plan: 100 unique items, 1 user	$24/month (first-year price; listed at $49) for 500 items, 2 users	Number of unique items and users; free plan keeps 1 month of history	Tracking stock, tools and materials from a phone
inFlow	14-day free trial	Lite: $99/month billed annually ($129 monthly), 2 team members, 1 location	Users and locations; extra team members and locations are paid add-ons	Product businesses and small wholesalers; Manufacturing plans for makers
Odoo	"One App Free": one app, unlimited users	Standard: about $9 to $11 per user/month (shown at $8.95 with a first-year discount, $11.20 listed)	Free only if Inventory is the single app you use; Standard adds all apps	Businesses that want inventory, sales and accounting in one system
Cin7 Core	No free plan	$349/month for 5 users, 6,000 sales orders/year, 2 integrations	Sales order volume and number of integrations	Growing multichannel sellers with higher volumes
Square for Retail	Free plan: items, SKUs and sales reporting	Plus: a monthly fee per location (see Square's pricing page)	Stock intake, purchase orders and supplier management are Plus features	Shops already using Square at the till

A few honest notes on reading that table:

• "Free" usually means a cap. Zoho's free plan stops at 50 orders a month, Sortly's at 100 unique items and one user. That suits testing, a side business, or tracking equipment, not a busy shop.
• Watch the next tier up. Sortly's entry paid plan is listed at $49 a month after the first-year price, and on inFlow Lite each extra team member and each extra location is a monthly add-on. Needing one more user, location or integration is usually what pushes the bill up.
• Integrations are where costs creep. Cin7 Core includes 2 integrations on its entry plan and sells more separately. inFlow's pricing page lists extra integrations as paid add-ons in one place and "unlimited" in another, so ask inFlow which applies before you buy.
• Accounting software may already do enough. QuickBooks Online tracks inventory quantities on its Plus and Advanced plans. For a small, single-location business, that can be the simplest step up from a spreadsheet.

How to choose the best inventory management software for your small business

1. Write down how stock moves today. From supplier to shelf to customer, including returns, damaged stock and stock counts. This is your real requirements list.
2. Count your numbers: SKUs, orders per month, locations, users, and the channels you sell through. Most plan limits are based on exactly these.
3. List your must-have connections: online store, point of sale, accounting, shipping. Check that each is a native integration on the plan you can afford, not a higher tier.
4. Price the plan you will need in a year, not the one you need today. If you expect a second location or another sales channel, look at that tier.
5. Trial with real data. Import a few hundred real items, receive a purchase order, make a sale online and in person, and run a stock count. Problems show up fast.
6. Check what you can export. If you leave, you want your item list, history and suppliers in a usable format.

The 80/20 rule for inventory (ABC analysis)

One of the most common questions is what the 80/20 rule means for inventory. It is the Pareto principle applied to stock: a small share of your items usually accounts for most of your sales value. In ABC analysis, you rank items by their annual value and group them:

• A items: the small group that brings in most of the value. Count them often, never let them run out, and negotiate hard on their supply.
• B items: the middle. Normal reorder points and regular checks.
• C items: the long tail of low-value items. Simple rules, fewer counts, and a regular look at what could be dropped.

Good inventory software can produce this report for you. In a spreadsheet you can do it too, but it has to be redone by hand every time.

When a system built for you pays off

Off-the-shelf tools are built for the most common way of working. They start to strain when your business does something they don't expect:

• Unusual units. You buy by the roll, metre or kilo and sell by the piece, or you track batches, expiry dates or serial numbers in a specific way.
• Kits, bundles and production steps. You assemble products from components, prepare food from ingredients, or move items through stages (cut, finish, pack) and need stock to follow each step.
• Approvals and accountability. Purchases above an amount need sign-off, stock adjustments need a reason, and you want a full audit history of who did what.
• Several tools that never agree. Stock in one app, orders in another, customers in a third, and someone retyping between them every day.
• Per-user and per-order pricing that keeps rising as you add staff, locations and channels, while you only use a fraction of the features.

In those cases, a stock system designed around your process can be simpler for your team to use, because it only contains your steps, your terms and your reports. The trade-off is that someone has to design, build, host and keep it running, which is why the way you pay for it matters.

Having it built for you with Buildly

Buildly designs, builds, hosts and maintains custom software on a monthly subscription, including internal business tools that replace spreadsheets and manual steps, and online stores built around your products and how you fulfil orders. Typical fits for inventory:

• An internal operations tool with approvals and audit history: stock across locations, purchase orders with sign-off, adjustments with reasons, and the reports you actually use.
• An online store with accounts, stock and shipping, where the store and the stock system are one thing instead of two apps kept in sync.

Projects like these usually fit the Business plan, priced from a monthly fee shown on the pricing page, with the initial build at no extra charge. Standard integrations (for example, your accounting software) are $20 each, once. Scoping is free: you send a brief, get a written scope and price, and approve each stage from scope and wireframes through design, build and launch. On technology, Buildly uses whatever your project needs, from custom code in Go, Node.js, Python or PHP to a platform such as WooCommerce or Magento, and recommends the stack in your written scope. After the plan's commitment, the contract is month to month, and on the Business plan you own the source code and database after 24 months.

If your stock process doesn't fit the boxes above, describe it in a brief and you will get a written scope and price.

Quick decision guide

• Under a few hundred items, one location, one channel: a spreadsheet, a free plan, or your accounting software's inventory features.
• Growing shop or online seller with standard workflows: an off-the-shelf tool from the table above, chosen for the integrations you need.
• Retail counter already on Square: start with Square for Retail and check whether you need Plus.
• Several modules wanted together (sales, stock, accounting): look at an all-in-one system such as Odoo.
• Unusual units, production steps, approvals, or tools that don't agree: a system built around your process.