Inventory management system for a small business: tools, prices and custom options
Short answer: An inventory management system tracks what stock you have, where it is, what is on order and what has sold, so you stop running out or overbuying. As of October 2026, small US businesses can start with Sortly (free, then from $24 a month billed yearly in the first year), QuickBooks Online Plus ($140 a month) or Odoo (one app free). Cin7 Core starts at $349 a month for larger sellers. A custom inventory system fits when your stock, locations or workflows do not match what these tools expect.
You're trying to work out which inventory system actually fits a business like yours.
I'm Ranjit, and I run Blur Studio: 15+ years building software, 120 apps taken live, and clients who have gone on to raise $10M+. I build AI systems and processes that help businesses do a lot more with a lot less time. I also work differently from most of what else is out there, more on that further down this page. Say hello.
What is an inventory management system?
An inventory management system is software that tracks your stock from the moment you order it to the moment it leaves. It shows what you have, where it sits and what it is worth.
Most systems do these jobs:
- Live stock counts: Each sale, return or delivery updates the number on hand.
- Locations: You see which shelf, van, store or warehouse holds each item.
- Reorder alerts: The system warns you when an item drops below a level you set.
- Purchase orders: You create orders to suppliers and track what is still due.
- Barcode scanning: Staff scan items with a phone or scanner, which cuts typing errors.
- Reports: You see what sells fast, what sits still and what your stock is worth.
Why does inventory tracking matter for US taxes?
Your stock numbers feed your tax return. The IRS says that to figure taxable income, you generally must value your inventory at the beginning and end of each tax year. IRS Publication 538 also explains that smaller businesses that pass its gross receipts test have simpler options. Some can choose not to keep an inventory in the usual way, as long as their method still reflects income.
Which rule applies to you depends on your sales and your accounting method. Ask your accountant which method you use, and make sure your system can produce the year-end count and value they need.
Which inventory management software do small businesses use?
The tools below cover a range from very small shops to growing sellers. Prices come from each vendor's own pricing page, as of October 2026.
Sortly
Sortly is a simple, mobile-first tool for tracking items, tools and supplies. Its free plan covers 1 user and 100 items. Advanced is $49 a month, or $24 a month billed yearly, for 2 users and 500 items. Ultra is $149 a month, or $74 billed yearly, and adds purchase orders and barcode labels. Premium is $299 a month, or $149 billed yearly, and adds a QuickBooks Online link. Sortly says those yearly prices carry a 50% discount for the first year only. After that, yearly plans get a 20% discount.
QuickBooks Online Plus and Advanced
If you already use QuickBooks for your books, its inventory features may be enough. Inventory tracking starts on QuickBooks Online Plus at $140 a month for 5 users. Advanced is $340 a month for 25 users. The lower Simple Start and Essentials plans do not include inventory tracking. If you want to compare other accounting tools, see my QuickBooks alternative guide.
Odoo Inventory
Odoo is a set of business apps, and inventory is one of them. Its One App Free plan gives you one app, such as Inventory, for unlimited users at no cost. If you need more apps, the Standard plan includes all of them at $38.90 a user a month. Odoo shows a lower price of $31.10 that applies for the first 12 months for the first users you order.
Cin7 Core
Cin7 Core suits sellers with more orders and more sales channels. Standard is $349 a month for 5 users and 6,000 sales orders a year. Pro is $599 a month and adds manufacturing planning. Advanced is $1,199 a month and adds warehouse management across many sites.
How the options compare
| Tool | Starting price (Oct 2026) | Users on that plan | Best for |
|---|---|---|---|
| Sortly | Free, then $24 a month billed yearly (first year) | 1, then 2 | Small teams tracking tools, parts or simple stock |
| QuickBooks Online Plus | $140 a month | 5 | Businesses that want stock and books in one place |
| Odoo Inventory | Free for one app | Unlimited | Owners who may add more Odoo apps later |
| Cin7 Core | $349 a month | 5 | Multi-channel sellers with high order volume |
How do you choose an inventory system?
Pick the tool that fits how your stock moves. Work through these questions:
- What do you track? Finished goods, raw materials, spare parts or rental gear each need different fields.
- Where does stock live? One back room is simple. Several stores, vans or warehouses need location tracking.
- Where do you sell? List every channel, such as your store, Shopify, Amazon or wholesale orders. Check that the tool syncs with each one.
- Do you make or assemble things? If you build products from parts, you need a bill of materials, which is a recipe that lists every part in a product.
- What must it connect to? Your accounting software is the most important link. Check it before you buy.
- Can you get your data out? Make sure you can export items, counts and history.
Run a trial with your real items. Count one shelf by hand and compare it to the system after a week of sales.
When does a custom inventory system make sense?
Most small businesses should buy a ready-made tool. It is quick to set up and costs far less to start. A custom inventory system is worth it when the tools above keep forcing staff into workarounds.
These are the cases I see most often.
- Unusual stock: You track items by batch, serial number, expiry date, size and color, or by the job they belong to.
- Mixed workflows: Stock moves between rental, repair and sale, and no single tool handles all three.
- Many systems, no links: Your store, website, accounting and job software each hold part of the picture.
- Field work: Technicians pull parts from vans, and you need each part tied to a job and an invoice.
- Seat fees at scale: You have many staff who only need to scan and count, and paying full seats for each one adds up.
A custom system can also start from what you already have. Many businesses run stock in a spreadsheet for years. My guide on turning an Excel sheet into a web app covers that step. If inventory is one piece of a bigger need that also covers finance, orders and purchasing, read my guide to ERP for small business.
What can AI add to inventory management?
AI helps most when it turns your past sales into better buying decisions. Practical uses include:
- Reorder suggestions: AI looks at sales by week and season, then suggests how much to reorder and when.
- Invoice reading: AI reads supplier invoices and packing slips, then updates stock counts for staff to check.
- Plain-language questions: An owner asks "what did we sell most of last month?" and gets an answer from live data, with no report building.
Keep a person in charge of the final order. AI should suggest, and staff should approve.
Which inventory tool actually fits your type of business?
The highest-rated tools in 2026 do not all solve the same problem. Zoho Inventory rates well for batch and serial tracking and reorder points. Square rates well for mobile counts and real-time tracking across several locations. Sortly is built for simplicity over power. inFlow is built for distributors specifically. A manufacturer and a wholesale distributor need almost opposite feature sets, so do not start by comparing star ratings, start by naming which of those three you actually are, a retailer counting units, a manufacturer tracking raw materials into finished goods, or a distributor moving stock between locations, since that answer narrows the real shortlist faster than any comparison chart.
How would Blur Studio build a custom inventory system?
I start by watching how stock moves in your business. I see how it arrives, where it sits, how it is picked and how it leaves. Then I list each system that touches it, such as your store, your website and your accounting app. I build the smallest version that fixes the biggest gap, often scanning and live counts first. Next, I connect it to the tools you already use, so a sale in one place updates the count everywhere. Your business holds the code, the hosting account and the data from the first day. After launch, I look after the system and add features as you grow. If a tool like Sortly or QuickBooks already fits, I will tell you to buy it.
Questions people ask
What is the best inventory management system for a small business?
The best system is the one that matches how your stock moves and links to your accounting software. Very small teams often start with Sortly or QuickBooks Online Plus, while sellers with many channels look at tools such as Cin7 Core.
How much does inventory management software cost?
As of October 2026, Sortly has a free plan and paid plans from $24 a month billed yearly in the first year. QuickBooks Online Plus is $140 a month, Odoo offers one app free, and Cin7 Core starts at $349 a month.
Can I use a spreadsheet to manage inventory?
A spreadsheet works for a small number of items in one place. It breaks down when several people update it at once, when you sell on more than one channel, or when you need live counts and reorder alerts.
When should I build a custom inventory system?
Build a custom inventory system when your stock or workflows do not fit standard tools. It also makes sense when many systems need to share stock data, or when per-seat fees grow too high. For a simple shop with one location, a ready-made tool is usually the better choice.
Does my inventory system affect my taxes?
Your stock records feed your taxes. The IRS generally requires businesses that keep inventory to value it at the start and end of each tax year. Your system should produce an accurate year-end count. Ask your accountant which inventory method applies to your business.
Which inventory software is rated best for a small business in 2026?
Independent review scores put Zoho Inventory and Square among the highest rated, each for different reasons, Zoho for batch and serial tracking and reorder points, Square for mobile counts and real-time tracking across locations. The right one depends on whether you are a retailer, a manufacturer or a distributor, since those need different features.
Roughly what does this cost?
As a broad reference, fixes and finishes start at around $1,500, and new builds start higher, always a fixed price agreed in writing before I start, never an hourly rate. My AI app cost guide explains what actually drives a quote up or down.
Is my project too small for this?
No. Most of the owners I work with have no tech team at all, that is the whole point. If the smarter move is a cheap software subscription instead of custom software, I will tell you that on the first call, even though it means I do not get paid.