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Stamp and Signature on Invoice

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Kishore Nuthalapati

Accountant for multiple small entities

154 Points Posted on 23 August 2023

Hi Sir or Madam

Could some one please advise stamp(Rubber Stamp) and signature are mandatory on Purchase Invoice as per Income tax or as per GST act

Please advise

Thanks in advance

Replies (3)

Quick Summary

This discussion clarifies whether a rubber stamp and signature are legally required on purchase invoices according to GST and Income Tax acts. The consensus is that they are not mandatory, especially if the information typically found on a stamp is already present on the invoice itself.

RAJA P M

"Do the Right Thing...!!!"

77833 Points Posted on 23 August 2023

Not mandatory...
Bcoz, The format (Contains in Rubber Stamp) also in invoices...

sabyasachi mukherjee

Profession

19978 Points Posted on 24 August 2023

Stamp and signature on invoice , rubber stamp . purchase invoice

Aashok Kumar Sharma

Finance/Compliance Consultant

76807 Points Posted on 07 November 2026

Signature yes, stamp no:

• Under Rule 46(q), a GST tax invoice must bear the signature or digital signature of the supplier or authorised representative. For e-invoices, the IRP's signed QR or IRN serves this purpose (signature not required, per the proviso).

• A rubber stamp isn't mandatory under GST or income-tax law.

• Income-tax doesn't prescribe invoice formats. Expenses are allowed on genuine evidence. A computer-generated invoice without a signature is acceptable if genuine (many state "computer generated, no signature required"). For GST ITC, though, an invoice lacking the Rule 46 particulars can be questioned.

• Many vendors issue PDF invoices with digital signatures. These are valid.