Stock Items and Inventory in Tally

Inventory in TallyPrime tracks the goods a business buys and sells, by quantity and value. You create a stock item for each product, a unit of measure (like pieces or kilograms), and optionally stock groups to organise items. Once set up, Tally updates stock quantities automatically every time you record a sales or purchase invoice, so you always know how much of each item you have. For any business that deals in goods, a shop, a distributor, a wholesaler, inventory is as important as the accounts.

Accounts vs inventory

Tally does two connected things. Accounting tracks money (who owes what, profit, balance sheet). Inventory tracks goods (how many units, of which product, worth how much). A GST sales invoice touches both at once: it records the income and the tax (accounting) and reduces the stock (inventory). Understanding that both happen from one invoice is the key idea.

Businesses that only provide services (a consultant, a tuition centre) may not need inventory. Businesses that sell products do.

The building blocks of inventory

You set up three things before recording stock movements:

1. Units of Measure — how you count the item (Nos/pieces, Kg, Litre, Box, Dozen).
2. Stock Groups — categories to organise items (e.g. "Mobiles", "Accessories"). Optional but helpful.
3. Stock Items — the actual products (e.g. "Redmi Note 13", "USB Cable").

Step 1: Create a unit of measure

1. Gateway of Tally ▸ Create ▸ Unit (or Alt + G ▸ "Create Unit").
2. Set the Type (Simple) and Symbol (e.g. Nos for numbers/pieces).
3. Save with Ctrl + A.

Create the units you'll need: Nos, Kg, Litre, Box, and so on.

Step 2: Create a stock group (optional)

1. Gateway of Tally ▸ Create ▸ Stock Group.
2. Name it (e.g. "Mobiles") and set Under to Primary (or a parent group).
3. Save.

Groups let you see totals per category in reports, useful once you have many items.

Step 3: Create a stock item

1. Gateway of Tally ▸ Create ▸ Stock Item.
2. Name the item (e.g. "USB Cable").
3. Set Under (a stock group, or Primary).
4. Set the Unit (e.g. Nos).
5. If GST applies, set the GST rate and HSN code here.
6. Save with Ctrl + A.

Recording stock movement

You don't manually add or remove stock; it flows from your invoices:

• A Purchase invoice (F9) with an item and quantity increases stock.
• A Sales invoice (F8) with an item and quantity decreases stock.

So if you buy 100 USB cables and sell 30, Tally shows 70 in stock automatically. This is why using invoice mode (with items) matters for product businesses, plain voucher mode won't update stock.

The Stock Summary report

To see what you have:

1. Gateway of Tally ▸ Stock Summary (or Alt + G ▸ "Stock Summary").
2. It lists every item with closing quantity and value.

This is your live stock register. You can drill into any item to see its purchases and sales.

Worked example (a mobile accessories shop)

You set up:

• Unit: Nos.
• Stock group: "Accessories".
• Stock items: "USB Cable", "Phone Cover", "Earphones".

Then:

1. Purchase: buy 100 USB Cables at ₹50 → stock shows 100 cables.
2. Sale: sell 30 USB Cables at ₹90 → stock shows 70 cables.
3. Open Stock Summary: USB Cable = 70 Nos in hand, with its value.

From these invoices, Tally also updated your Sales, Purchase, GST and the customer/supplier ledgers, all from the same entries.

Stock valuation (a note)

Tally values closing stock using a method like FIFO (First In First Out), Average Cost, or others, which you can set per item. For beginners, the default (usually Average Cost) is fine. The point to know: closing stock value flows into your Profit & Loss and Balance Sheet, so accurate inventory means accurate profit.

Real-world scenario (why inventory accuracy matters)

Imagine a distributor whose Tally shows 200 units of a product, but the warehouse actually has 150. That gap, called shrinkage, could be theft, breakage, or unrecorded sales. Because Tally tracks stock from every invoice, comparing Tally's figure with a physical count reveals the difference. Businesses do this "physical stock verification" periodically. Good inventory records also prevent over-ordering (tying up cash in stock) and stock-outs (losing sales because an item ran out). This is why employers value staff who can maintain clean inventory in Tally, not just pass accounting entries.

Pro tips

• Create your units and common items before you start billing, so invoices go smoothly.
• Use stock groups once you have many items; reports become far easier to read.
• Enter GST rate and HSN at the item level, so every invoice picks them up automatically.
• Use invoice mode (with items) for all product sales and purchases, so stock stays accurate.

Common mistakes

• Voucher mode instead of invoice mode. Plain voucher entries don't update stock. Use invoice mode for product businesses.
• Duplicate items. "USB Cable" and "Usb cable" become two items and split your stock. Keep names consistent.
• Wrong unit. Selling in "Box" but buying in "Nos" without a proper conversion confuses quantities.
• Ignoring physical verification. Tally's figure is only as good as the entries; count physical stock periodically.

Key takeaways

• Inventory tracks goods by quantity and value; accounting tracks money. One invoice updates both.
• Set up units, stock groups and stock items before billing.
• Purchases increase stock; sales decrease it, automatically, in invoice mode.
• The Stock Summary is your live stock register; compare it with a physical count.

Practice task

In your practice company, create a unit (Nos), a stock group ("Stationery"), and three items (Pen, Notebook, File). Record a purchase of 50 of each, then a sale of 10 of each. Open the Stock Summary and confirm 40 of each remains.

Learn full inventory, GST and reporting in Tally with a trainer in the ADFA program at HCI.