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Unique Quantity Code (UQC) under GST

Posted On:22nd Apr 2022
Updated On:8th Aug 2025
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A unique quantity code (UQC) is a measurement unit in the GST (goods and services tax) framework, and all taxpayers use it uniformly. It is prominently featured on the GST portal and within e-way bills and e-invoicing systems. Understanding UQC is important for everyone who is registered for GST.

What is a Unique Quantity Code?

UQC's full form is unique quantity code, which denotes a measurement unit. For instance, an invoice would list 1 kilogram of wheat as 1 kg or 1 litre of oil as 1000 millilitres.

What is a Unique Quantity Code under GST?

According to the CGST (Central Goods and Services Tax) Rules, tax invoices, credit notes, and debit notes must include a UQC or a quantity unit description. For instance, 100 metres of fabric is denoted as MTR and appears on documents as 100 MTR.Where does UQC need to be declared during filing? In the GST process, UQC should be declared in e-invoices, e-way bills, and the HSN (harmonised system of nomenclature) summary section of GSTR-1.

Confusion Among Some Taxpayers Regarding Unique Quantity Codes

Businesses use different versions of the same code. For example, a metre might appear as Mtr., m, metre, metres, or meters. The GST portal recognises only the standard variation MTR-METERS. Any other form will result in an error.Therefore, when employing the Government’s GSTR-1 offline tool, choosing the proper code from the dropdown menu is advisable. You must enter quantity details using the specified UQC of the GST Portal, regardless of the unit of measurement you use.

How to Use Unique Quantity Codes in GST Returns

When you're filing GST returns, it's mandatory to specify the quantity of goods using the correct UQC. Here’s how you can effectively use UQCs in your GST returns: Step 1: Identify the Correct UQC: Choose the appropriate UQC that matches the unit of measurement for your transactions. You can look up the correct UQC by referring to the official list provided by the GST authorities. Step 2: Report in Invoices: When preparing invoices, list the quantity of the goods along with the corresponding UQC. For instance, if you sell 10 kilograms of rice, you should state it as "10 KGS." Step 3: Enter GST Returns: When submitting GST returns (like GSTR-1, GSTR-3B, etc.), always report the quantities using the standardised UQCs. This approach ensures accuracy and consistency, helping to avoid discrepancies in tax assessments. Importance of Unit Quantity Code in GST The use of the unit quantity code in GST holds importance for various reasons:

  • Standardisation: UQCs help create uniform measurement units across diverse businesses and sectors, minimising discrepancies and confusion in tax documentation.
  • Clarity in Transactions: Standardised codes simplify understanding the quantity and unit of measurement for goods and services exchanged.
  • Ease of Compliance: A consistent code system streamlines GST compliance for businesses, lowering the risk of return mistakes.
  • Data Accuracy: When uniform codes are employed for similar measurement units, it ensures precise data entry and reporting, supporting improved tax management and audit processes.

List of Unique Quantity Codes or UQC Codes

GST has not specifically defined quantity codes. Therefore, the UQC, as per Customs Rules, is still applicable. We have provided the GST format so you can file it straightforwardly. Remember, the first 3 letters represent the code to use. The remaining part explains the code. If you do not find a suitable quantity, use the "OTH-Others" code.

S.No. Quantity Quantity Type UQC Code
1 BAGS Measure BAG
2 BALE Measure BAL
3 BUNDLES Measure BDL
4 BUCKLES Measure BKL
5 BILLIONS OF UNITS Measure BOU
6 BOX Measure BOX
7 BOTTLES Measure BTL
8 BUNCHES Measure BUN
9 CANS Measure CAN
10 CUBIC METER Volume CBM
11 CUBIC CENTIMETER Volume CCM
12 CENTIMETER Length CMS
13 CARTONS Measure CTN
14 DOZEN Measure DOZ
15 DRUM Measure DRM
16 GREAT GROSS Measure GGR
17 GRAMS Weight GMS
18 GROSS Measure GRS
19 GROSS YARDS Length GYD
20 KILOGRAMS Weight KGS
21 KILOLITER Volume KLR
22 KILOMETRE Length KME
23 MILLILITRE Volume MLT
24 METERS Length MTR
25 METRIC TONS Weight MTS
26 NUMBERS Measure NOS
27 PACKS Measure PAC
28 PIECES Measure PCS
29 PAIRS Measure PRS
30 QUINTAL Weight QTL
31 ROLLS Measure ROL
32 SETS Measure SET
33 SQUARE FEET Area SQF
34 SQUARE METERS Area SQM
35 SQUARE YARDS Area SQY
36 TABLETS Measure TBS
37 TEN GROSS Measure TGM
38 THOUSANDS Measure THD
39 TONNES Weight TON
40 TUBES Measure TUB
41 US GALLONS Volume UGS
42 UNITS Measure UNT
43 YARDS Length YDS
44 OTHERS OTH

Streamline GST Process by Mastering Unique Quantity Codes

Adopting and correctly using unique quantity codes (UQC) in GST filings are indispensable for maintaining transparency and efficiency in tax administration. By standardising the expression of quantities across various industries and transactions, UQCs simplify the reporting process and enhance the accuracy of tax documentation. This means fewer errors in GST returns and smoother compliance procedures for businesses. As UQCs become a staple in e-invoices and e-way bills, understanding and implementing them correctly is crucial. Using a GST calculator can help businesses determine tax liabilities with greater accuracy, ensuring compliance with GST norms. Businesses are encouraged to adhere strictly to the prescribed codes, ensuring all transactions are recorded accurately to avoid potential pitfalls in tax assessments. The UQC list provided is essential for every GST-registered entity, facilitating a more seamless integration into the GST ecosystem.

FAQS - FREQUENTLY ASKED QUESTIONS

What exactly is the full form of UQC?

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How do I use the UQC when filing GST?

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What should I do if I cannot find the UQC for my product?

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Where should the UQC be declared during GST filing?

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Can I use different variations of the measurement unit in the GST system?

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Why is it important to use the correct UQC in GST filings?

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Is the UQC used only in India?

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What happens if I use the wrong UQC in my GST filing?

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How do I choose the right UQC for my transactions?

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What role does UQC play in GST compliance?

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Disclaimer

The information contained herein is generic in nature and is meant for educational purposes only. Nothing here is to be construed as an investment or financial or taxation advice nor to be considered as an invitation or solicitation or advertisement for any financial product. Readers are advised to exercise discretion and should seek independent professional advice prior to making any investment decision in relation to any financial product. Aditya Birla Capital Group is not liable for any decision arising out of the use of this information.



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