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HSN Code Check and Validator

GST basics and toolsHSN checker2 to 8 digitsChecked 2 Nov 2026

This hsn code check tool lets you type a 2, 4, 6 or 8 digit code and see whether it exists in the official HSN master used under GST, along with its chapter, heading and sub-heading descriptions. It also tells you how many digits a business must print on its invoices for its turnover.

You will find the checker just under the facts panel; it works entirely on your device and keeps no record of the codes you enter. Below are the steps, how to read the result, how to check a code on the GST portal, and the common reasons a code fails. For the rate of a code, use the GST rate finder.

Quick facts

  • What it checks

    Format and existence in the official HSN master
  • Shows

    Chapter, heading and sub-heading descriptions
  • Digits rule

    4 up to Rs 5 crore turnover, 6 above
  • Privacy

    Runs in the browser; nothing is sent or stored
  • Rates

    Use the rate finder for the GST rate
  • Services

    SAC codes start with 99

HSN code checker: codes and GST rates

Item / HSN / GST
  1. Valid 4 digit heading18%Cement; checker shows Chapter 25
  2. Valid 8 digit tariff item18%Shows the split AC line
  3. Code that does not existNilChecker flags it as not found
  4. Code with too few digits for large business18%Turnover above Rs 5 crore needs 6 digits

How to check hsn code with the checker

  1. Type the code without spaces or with them: 2523, 2523 29 or 25232910 all work.
  2. The checker tests the format (digits only, 2 to 8 digits) and looks the code up in the HSN master.
  3. If the code exists, it shows the chapter, heading and sub-heading descriptions, so you can confirm it matches your product.
  4. If it does not exist, it says so; try a shorter code to find the nearest valid heading.
  5. Check the digits note: up to Rs 5 crore turnover, 4 digits on B2B invoices; above that, at least 6.

Hsn code validator: reading the result

A valid code proves only that the code exists, not that it is right for your product. A dealer who bills cement under 2520 (gypsum) will get a valid result, but the code is wrong. Always read the description shown and compare it with the product. When the description at 4 digits fits but you are unsure at 8 digits, printing 6 digits is safer than guessing the last two.

How to check hsn code in GST portal

The GST portal has a search facility for HSN and SAC codes in the services section, without logging in. You can search by code or by description and download the master list. The checker on this page uses the same master, so the result should agree. If the portal shows a newer change, follow the portal.

Hsn code verification: common reasons a code fails

Why a code may not be found
ProblemWhat to do
Old code no longer in the tariffSearch the product name in the HSN code finder for the current code
Typing error, such as 25233Check the digit count; codes are 2, 4, 6 or 8 digits
Using a SAC codeServices codes start with 99; they are in the SAC list
Country specific code from abroadIndian codes match only at 6 digits; the last two may differ
Code made up from a product's model numberModel numbers are not HSN codes

Hsn code checker and digits on invoices

Notification rules require businesses with aggregate turnover up to Rs 5 crore in the previous year to show 4 digit HSN on B2B invoices, and those above Rs 5 crore to show 6 digits on all invoices. More detail is on the HSN digits page. The GSTR-1 HSN summary uses the same digit rule.

Other tools

Tools on this site
ToolUse
HSN code finderFind a code from a product name
GST rate finderSee the rate entries for a code
GST rate calculatorWork out tax and the CGST, SGST or IGST split
HSN code listBrowse chapters and sections

The checker compares codes with the HSN master as published, for general reference. The master is updated from time to time, so confirm a doubtful code on the GST portal and ask a GST practitioner or chartered accountant to settle classification disputes.

Frequently asked questions

How do I check if an HSN code is correct?

Type it in the checker to confirm it exists, then compare the description shown with your product.

How do I check an HSN code on the GST portal?

Use the HSN and SAC search on the GST portal, which works without logging in. You can search by code or description.

How many digits of HSN must I print?

4 digits if your turnover was up to Rs 5 crore, and 6 digits if above, on B2B invoices.

Why does my HSN code show as not found?

It may be an old code, a typing error, a SAC code or a foreign code that differs at 8 digits.

Does the checker show the GST rate?

No. Use the GST rate finder for rates.

Every page in GST basics and tools

8 pages
ItemCodeGST
GST rate list GuideGST5%, 18% or 40%
HSN code meaningHSNVaries
HSN code list GuideHSN5% or 18%
GST rate finder ToolGST0.25% to 40%
HSN code checker ToolHSNAny slab
GST rate changesGST5%, 18%, 40%
HSN digits on invoicesHSNAny slab
GST rate calculator ToolGSTAny rate