How to Set Up and Use Multiple Units in TallyPrime

Multiple units in TallyPrime let you buy, store, and sell stock in different measurements. Create units, define conversion ratios, and track inventory across pieces, weight, volume, or length with automatic calculations.

What Are Multiple Units in TallyPrime?

Multiple units, also called Units of Measure (UOM), are the backbone of flexible inventory management in TallyPrime. They allow you to track the same stock item in different measurements. For example, a pharmaceutical company might buy raw materials in kilograms but sell finished tablets in strips and boxes. A beverage distributor buys syrup in liters but sells it in bottles and cases. Without multiple units, this tracking becomes manual and error-prone.

TallyPrime supports two types of units: simple units (standalone measurements like KG, PCS, MTR) and compound units (combinations with fixed ratios, like "1 box of 12 pieces"). This flexibility is especially valuable for manufacturers, traders, and service providers who need to work across supply chains with different measurement standards.

Why Use Multiple Units in Your Business?

Multiple units solve real business problems. They reduce manual conversion errors, speed up data entry, and provide accurate stock visibility across your supply chain. When you buy fabric in meters but sell in centimeters, or buy eggs in dozens but sell individually, multiple units keep your records consistent and audit-ready.

For GST compliance in India, accurate unit tracking ensures correct tax calculation on invoices. For reorder management, you can set minimum stock levels in your preferred unit and Tally alerts you automatically. Multi-unit inventory also supports batch and expiry tracking, which is critical for food, pharma, and cosmetics businesses.

How to Create a Unit of Measure in TallyPrime

Creating a unit is straightforward. Follow this path:

Gateway of Tally > Create > Unit of Measure

A screen opens with the following fields:

• Unit Symbol: Enter a short code like KG, PCS, LTR, MTR, BOX, or STRIP. Keep it to 3-4 characters for clarity.
• Unit Name: Enter the full name, e.g., "Kilogram," "Piece," "Liter," "Meter."
• Formal Name: Optional; used in formal reports and invoices. For example, "Kilogram (kg)" or "Piece (pcs)."
• Is Sub-Unit: If this unit is a fraction of another unit, select "Yes." This opens a field to define the parent unit and conversion ratio.

Press Ctrl+A to save. The unit is now available for use in stock items.

Creating Sub-Units and Conversion Ratios

A sub-unit is a smaller measurement derived from a larger one. The conversion ratio defines how many sub-units equal one parent unit. This is where multiple units become powerful.

Example: You want to create a "PIECE" sub-unit of a "BOX" unit, where 1 box = 12 pieces.

1. Go to Gateway of Tally > Create > Unit of Measure.
2. Enter Symbol: PIECE, Name: Piece.
3. Set Is Sub-Unit: Yes.
4. Select Parent Unit: BOX.
5. Enter Conversion Ratio: 12 (meaning 12 pieces = 1 box).
6. Save with Ctrl+A.

Now, when you buy 5 boxes and sell 24 pieces, TallyPrime automatically converts: 5 boxes = 60 pieces. Stock reports show both units, and your inventory remains accurate.

Assigning Multiple Units to a Stock Item

Once your units are created, assign them to stock items. When you create a stock item in Tally, you specify a primary unit (the default for purchases and stock counts). However, you can also define alternative units for that item.

Follow this path:

Gateway of Tally > Create > Stock Item

Fill in the item details. In the Unit field, select your primary unit (e.g., BOX). If you have set up sub-units, they are automatically available for transactions without extra configuration.

Some businesses also use the Stock Item's "Additional Details" section to document which units apply to that item, especially if the item can be measured in multiple independent ways (e.g., a roll of cloth in meters or in kilograms).

Unit Conversion During Stock Transactions

When you create a purchase order, invoice, or stock journal entry, TallyPrime lets you specify the unit for that transaction. If you buy in boxes and sell in pieces, simply select the appropriate unit on each document.

Worked Example:

Transaction	Item	Quantity	Unit	Tally Conversion
Purchase	Chocolate Bars	10	BOX	10 BOX = 120 PIECE (if 1 BOX = 12 PIECE)
Sale 1	Chocolate Bars	50	PIECE	50 PIECE = 4.17 BOX (stock decreases)
Sale 2	Chocolate Bars	2	BOX	2 BOX = 24 PIECE (stock decreases)
Stock After	Chocolate Bars	46	PIECE or 3.83 BOX	Closing stock: 46 pieces

TallyPrime tracks all transactions in the primary unit (PIECE) internally, but displays reports in any unit you request. This flexibility ensures accuracy and reduces manual calculation.

Setting Up Reorder Levels with Multiple Units

When you use reorder levels in Tally, you can set minimum and maximum stock quantities. You define these in your chosen unit. For example, you might set a minimum of 5 boxes and a maximum of 20 boxes for an item. When stock falls below 5 boxes, Tally flags it for reordering.

Go to Gateway of Tally > Create > Stock Item > Additional Details to set reorder levels. Specify the unit in which you want to track minimum stock. Tally will alert you if stock falls below that threshold, regardless of which unit you use for individual transactions.

Pricing and Multiple Units

Different units can have different selling prices. When you set up price lists in TallyPrime, you can define a rate per unit. For instance, chocolate bars sold individually might be priced at Rs 20 per piece, but Rs 200 per box (12 pieces). When you create an invoice and select the unit, Tally automatically applies the correct rate.

This is managed under Gateway of Tally > Create > Price List. Specify the item, unit, and rate. You can have multiple price list entries for the same item with different units, allowing seasonal or customer-specific pricing without creating duplicate items.

Multiple Units in Stock Groups and Godowns

Units are item-level settings, not group or location-specific. However, when you use stock groups in Tally and godowns in Tally, the multi-unit logic applies consistently across all items in a group and all storage locations.

For example, if you have a "Packaged Foods" stock group with items tracked in boxes and pieces, all godowns (warehouses) will show stock in both units. This is useful for multi-location businesses that need to consolidate inventory reports across branches while maintaining unit flexibility at each location.

Batch and Expiry with Multiple Units

When you use batch and expiry tracking in Tally, each batch is tied to a stock item and its units. You can receive batch XYZ001 of a medicine in boxes and issue it in strips. Tally tracks both the batch and the unit conversion, ensuring that expiry alerts and batch reports remain accurate even when you transact in different units.

Stock Journals and Unit Changes

A stock journal in Tally is used to adjust inventory for breakage, loss, or recount. When you create a stock journal entry, you specify the unit for that adjustment. If you discover a shortage of 5 pieces during a physical count, enter it as 5 PIECE. Tally converts it to the primary unit and updates stock accordingly.

Reporting with Multiple Units

TallyPrime's stock reports display inventory in all defined units. Go to Gateway of Tally > Display > Inventory Reports > Stock Summary or Stock Item Details. The report shows opening stock, purchases, sales, and closing stock in each unit. You can also drill down into individual items to see unit-wise breakdowns.

For inventory management in TallyPrime, this multi-unit visibility is essential. It helps you identify slow-moving stock, optimize reorder quantities, and maintain accurate records for audits and GST compliance.

Common Mistakes to Avoid

Do not create redundant units. For example, do not create both "KG" and "KILOGRAM" as separate units; pick one and use it consistently. Do not set incorrect conversion ratios; a mistake here cascades through all stock reports. Always test unit conversions with a small transaction before rolling out to your entire inventory. If you need to change a unit or ratio after transactions have been recorded, back up your data first and consider consulting a Tally expert to avoid data inconsistencies.

Multiple Units and GST Compliance

GST in India is applied to the transaction value, not the unit. However, accurate unit tracking ensures that your invoices are clear and compliant. When you enable F11 > Enable GST, TallyPrime applies GST rates based on the item's HSN code and tax classification, regardless of the unit used. Multi-unit invoices are fully supported and appear correctly in GSTR-1 and GSTR-3B reports.

When to Use Compound Units vs. Simple Units

Use simple units for independent measurements (KG, LTR, MTR, PCS). Use compound units when you have a fixed, recurring relationship (1 box of 12 pieces, 1 carton of 20 boxes). Compound units reduce data entry errors because the conversion is built in. However, if your ratios vary (some boxes have 10 pieces, others have 12), use simple units and manage conversion manually or use price lists to reflect the variation.

Upgrading Your Tally License for Advanced Features

Multiple units are available in TallyPrime Silver and Gold editions. Silver (single user, perpetual) costs approximately Rs 22,500 plus 18% GST; Gold (unlimited LAN users, perpetual) costs approximately Rs 67,500 plus 18% GST. Both include 1 year of Technical Support Services (TSS) free. If you are running an older version of Tally, consider upgrading to TallyPrime to access the latest UOM and inventory features. TSS renewal costs approximately Rs 4,500 per year for Silver and Rs 13,500 per year for Gold (plus GST). These are indicative 2026 prices; contact your Tally partner for current rates.

Multiple units in TallyPrime transform how you manage inventory across different measurements and supply chain stages. Whether you are a manufacturer, trader, or distributor, setting up units correctly saves time, reduces errors, and keeps your stock records audit-ready. If you need help configuring multiple units, creating stock items, or optimizing your inventory workflows, reach out to Global IT Care, a Tally 3 Star Certified Partner in Purnea, Bihar, serving businesses since 2010. Call us at +91 75469 00951 for a free consultation.