Digital signature in sale invoice

If you use a digital signature on your invoices and these digital invoices are compliant with the Information Technology Act, 2000 (which digital signatures typically are, if procured from a Certifying Authority), then:

• For e-invoices (if mandated for your turnover), your digital signature (or the IRP's digital signature) is sufficient, and the customer's signature is not required.

• For other digital invoices (if not under e-invoicing mandate but you're issuing them electronically), your digital signature as the supplier is generally sufficient, and the customer's signature is not explicitly mandated by GST or Income Tax laws for the invoice to be valid.

While a customer's physical or digital acknowledgment on a document can always be beneficial for commercial and evidentiary purposes (e.g., proof of delivery, acceptance of goods/services, or agreement to terms), it is not a statutory requirement for the validity of a GST or Income Tax invoice if the supplier has properly issued a digitally signed invoice.

Ok sir thank you so much. 

But if we use digital signature in invoices. 

Sign should be there or just digital signed by the concern person ..... Etc..

Thank you 

Pls may I know ?

Digital sigmature of the authorized person is valid.

Sir I have a doubt sir

Sign means handwritten sign to be required

Or just

written digitally signed by proprietor

Thank you.

Not just hand written or writting e-signed.

Digital Signature (like that provided by EMUDRA) is a specific type of electronic signature that uses cryptographic techniques (like PKI) to provide a higher level of security, authenticity, and tamper-proofing. It creates a verifiable link between the signer and the document, making it highly reliable for proving the document's origin and ensuring it hasn't been changed. The documents signed using digital signatures are attested with the specific time, date, name of the person/organization, address, email address, pin code, and name of certifying authority along with the signature. 

For a GST tax invoice, the supplier’s signature—physical or digital—is generally not required where the invoice is issued electronically. Under GST rules, an electronic invoice may be authenticated with a digital signature, but a DSC is not mandatory for every ordinary e-invoice. If e-invoicing applies to your business, the invoice must also meet the applicable IRN/QR-code requirements; a DSC alone does not replace these.

You generally do not need the customer’s signature on a sales invoice for GST or income-tax purposes. Keep the invoice and supporting evidence of the sale, such as order, delivery or service records, and payment details. A customer’s signature or acknowledgement may still be useful for proof of delivery or under your contract, and special transaction or sector-specific rules may apply.

Issuing and retaining invoices digitally can fit into the GST and income-tax record-keeping workflow when the records remain accessible and reliable. Manual invoice handling is difficult, and automation reduces repetitive work while professional judgment remains in control. At Jir AI, our 2,000+ AI agents and 650+ integrations streamline GST, ITR, TDS, TCS and other compliance workflows, helping reduce manual workload by up to 70%. WhatsApp us to explore digital compliance workflows: https://wa.me/message/3HVOZ7HIY4ESC1