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GSTIN / IEC / PAN Format Validator

Validates format and check-digit only — it does not query live GSTN, DGFT or CBDT databases.

Instantly verify the structure of a GSTIN (15-digit), Import Export Code (10-char) or PAN, get a field-by-field breakdown, and validate the GSTIN check digit before you file on GST, DGFT or ICEGATE.

Quick Answer: Is the GSTIN structurally correct?

A GSTIN is 15 characters: 2-digit state code, the 10-character PAN, 1 entity-type digit, the fixed letter Z, and a mod-36 check digit (official GSTN algorithm). Validate the format and check digit below, then confirm live registration status on the GST portal ↗ or verify your IEC on DGFT ↗.

Verify before you file (September 2026): GSTN, DGFT and CBDT update registration data continuously — format-valid does not mean active. This tool catches typos instantly; confirm live status on the official portals before filing: Search Taxpayer on GST portal ↗ · View Any IEC on DGFT ↗

Identifier Details

Select the identifier type and enter the number to validate.

Try:

Validation Result

Structural check with field-by-field breakdown and GSTIN check-digit verification.

Note: This tool verifies format and check digit only. It does not confirm whether the identifier is registered or active. Confirm live status on the official portals before filing:
Verify on GST portal ↗ Verify IEC on DGFT ↗

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Understanding GSTIN, IEC and PAN Formats

A GSTIN (GST Identification Number) is a 15-character code: 2-digit state code, the 10-character PAN of the entity, 1 entity-type code, the letter Z, and a final check digit. The GST portal, ICEGATE and bank systems all auto-validate it — a single character error rejects the return or filing.

An IEC (Import Export Code) is the 10-character DGFT registration number mandatory for every exporter and importer in India. The PAN is the Income Tax identifier whose 4th character indicates the entity type (C = Company, P = Individual, F = Firm, H = HUF, and so on).

Before applying for an IEC, mapping an AD Code or filing on ICEGATE, validate your identifiers here to avoid rejection and rework.

Frequently Asked Questions

What does the Z in a GSTIN mean?

The 14th character of a GSTIN is the fixed letter Z. The 15th is a mod-36 check digit computed with the official GSTN algorithm — this validator applies exactly that algorithm.

My IEC has a different pattern — is it invalid?

Modern IECs are PAN-aligned (5 letters + 4 digits + 1 letter); some older IECs are 10 digits. The validator accepts both structures. For unusual cases, verify on the DGFT portal using View Any IEC.

Where is the entity type shown in a PAN?

The 4th character of the PAN indicates entity type: C (Company), P (Individual), F (Firm), H (HUF), A (AOP), T (Trust), B (BOI), L (Local Authority), J (Artificial Juridical Person), G (Government).

What is the GSTIN format?

A GSTIN is a 15-character code: 2-digit state code, the 10-character PAN, 1 entity-type digit, the letter Z, and a mod-36 check digit. This validator verifies the structure and the check digit using the official GSTN algorithm.

What is the IEC format?

An IEC (Import Export Code) is a 10-character code issued by DGFT. Modern IECs follow the PAN-aligned pattern (5 letters + 4 digits + 1 letter); legacy IECs are 10 digits. The validator checks both.

Why validate before filing?

GST portal, ICEGATE and DGFT systems auto-validate identifiers — a single character error rejects the filing. Validate the format and check digit here first, then confirm live registration status on the GST portal (Search Taxpayer) or DGFT (View Any IEC) — both are linked from this page.

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