Important Keywords: Digital Signature Certificate (DSC), What is DSC in India, Class 3 DSC meaning, DSC registration process, How to get Digital Signature Certificate, DSC for MCA filing, DSC for GST registration, Digital signature for income tax filing, Class 3 DSC requirements India, Certifying Authority DSC India, DSC validity and cost India, eMudhra DSC registration, DSC for directors and professionals.
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Table of Contents
Overview
In today’s digital world, a Digital Signature Certificate (DSC) is more than just a formality—it’s your business’s digital ID. It keeps your documents secure, your transactions legal, and your dealings with government authorities smooth and hassle-free.
With a DSC, you can file documents, sign agreements, and submit forms online safely. It uses encryption to protect your information, verify signatures, and ensure that all signed copies are valid. By choosing the right DSC, keeping it updated, and using it properly, your business stays compliant while saving time and effort.
What is Digital Signature certificate (DSC)?
Generally, as you know, DSC stands for Digital Signature Certificate. A DSC is like a digital version of an ID card or a paper certificate. It proves your identity online for a person or an organization. Just like a handwritten signature verifies a paper document, a DSC verifies electronic documents. It can be used to e-sign and e-verify tax returns, and in some cases, having a DSC is mandatory.
Simply put, a DSC is your online signature—just like your handwritten signature, but in digital form. It is used to sign documents digitally, access online services, and prove that a document is legally signed by you. It can also be used to send secure (encrypted) emails and helps keep your data safe.
To use a DSC, a person or organization must first register with a Certifying Authority (CA). A CA is an organization approved by the Controller of Certifying Authorities (CCA) to issue Digital Signature Certificates.
For example, eMudhra Limited provides DSCs that are valid for 1 to 3 years. These certificates are commonly used for GST filing, Income Tax filing, EPFO work, and online tenders. The entire process is online and usually quick.
Why it is mandatory for online documents?
As we’ve seen, a DSC is mandatory for online documents because it acts like a secure digital ID. It:
- Proves your identity – Just like your handwritten signature, it shows the document is really from you.
- Keeps documents safe – It uses encryption to protect data to make sure nothing is tampered with.
- Makes documents legally valid – The government recognizes DSC-signed documents as official.
- Prevents fraud – It confirms the signature is authentic and the document hasn’t been changed.
Without DSC, many government filings cannot be completed, especially for companies and professionals.
Types of DSC
Earlier, multiple classes and categories of DSC existed. However, as per current guidelines, only Class 3 DSC is issued for most official and business purposes:
- Class 1 DSC – Basic level security (now mostly discontinued) (For individual users, it applies to basic level, which can be involved in the verification of emails. (Discontinued).
- Class 2 DSC – Earlier used for MCA and Income Tax filings (now replaced) (Used for ROC, ITR, and MCA filings. Discontinued after 1st Jan 2021 but the old ones are valid until actual expiry).
- Class 3 DSC – Highest level security, currently used for e-filing, e-tendering, etc. (It will provide highest security. Now, Class 3 DSC is the most commonly used and accepted certificate for business, government filings and high-value transactions.)
- DGFT DSC – Used for trade and export/import transactions under the Directorate General of Foreign Trade (DGFT).
- Organization DSC – A shared certificate for organizations, used by multiple authorized users for company-level filings.
- Device DSC – Linked to a specific device or system, used for automated processes or secure machine-to-machine communication.
Note: As per Controller of Certifying Authorities guidelines, Class 3 DSC is the most commonly used and accepted certificate for government and regulatory filings in India.
Roadmap of DSC
Understand DSC in Hindi
Who needs a DSC?
Here is the list of people who need a DSC:
- Company Directors
- Company Managers
- Chartered Accountants
- For Students of ICAI, ICSI, ICWAI
- Practicing Professionals
- Authorized Business Representatives
- Nodal and Deputy Nodal Officers For IEPF
Where to Get a DSC?
The list of licensed CAs along with their contact information is available on the Controller of Certifying Authorities (CCA) portal (www.cca.gov.in).
For more information, please visit: www.cca.gov.in
Where is a DSC Mandatory?
In India class 3 digital signature certificate (DSC) is currently legally mandated for official and commercial activities. such as:
Ministry of Corporate Affairs (MCA): If someone is incorporating a Private Limited Company or an LLP, in that case all directors and authorized signatories must sign the incorporation forms (like SPICe+) using a digital signature. It is also required for filing annual returns and director KYC.
Goods and Services Tax (GST): Companies and LLPs are legally required to use a DSC to sign their GST registration applications, file monthly or quarterly returns (GSTR-1, GSTR-3B), and claim tax refunds.
Income Tax Returns: Companies under Section 44AB audit rules are legally required to file their tax returns and audit reports electronically using a digital signature.
Imp Note: Digital signatures are valid for most transactions, but wills, trust deeds, and some promissory notes still need a real pen (i.e. Handwritten Signature). You cannot sign these documents digitally, So on these, a physical signature is still required.
Documents Required for DSC
While applying the DSC you need to have below mentioned documents as per requirement:
| Category | Identity Proof | Address Proof |
|---|---|---|
| Indian Individuals | Any one of: PAN Card (Mandatory), Aadhaar Card (for eKYC), Passport, Driving Licence | Any one of: Aadhaar Card, Bank Statement (latest, attested if required), Utility Bills (Electricity / Water / Gas – recent) (not older than 2–3 months). |
| Foreign Individuals (All documents must be attested by Embassy / Apostilled) | Passport, VISA, Resident Permit, Govt. ID | Passport / Government-issued Address Proof |
| Indian Organizations | Any one of: Certificate of Incorporation / Registration, PAN of Organization, GST Certificate (if applicable), Board Resolution / Authorization Letter, ID Proof of Authorized Signatory | Any one of: Copy of Organization’s PAN Card, Recent Bank Statement, Certificate of Incorporation (COI), Partnership Deed or Authorization Letter (with list of partners, if applicable), Proof of Authorized Signatory (Board Resolution or list of directors), Authorized Signatory’s ID Proof (PAN Card, Organizational ID, etc.), Applicant’s PAN Card. |
| Foreign Organizations | Passport of applicant, Govt. ID | Passport / Govt. Address Proof + Attestation |
Document requirements may slightly vary depending on the Certifying Authority and method of verification (Aadhaar eKYC, video KYC, or physical verification).
How to obtain Digital Signature Certificate
You can get your Digital Signature Certificate (DSC) from the following websites of currently active and authorized Certifying Authorities (CAs):
| Pantasign CA |  |
| (n)Code Solutions CA |  |
| eMudhra CA |  |
| Capricorn CA |  |
| Verasys (Vsign CA) |  |
| RISL (RajComp) CA |  |
| IDSign CA |  |
| XtraTrust CA |  |
| ProDigiSign CA |  |
| SignX CA |  |
| Care4Sign CA |  |
These CAs are listed on the official CCA “CA Services to Public” section and are actively issuing DSCs.
- Applicants can apply for a DSC directly with a Certifying Authority (CA) by showing their original documents; self-attested copies are enough.
- Some CAs allow DSCs to be issued using Aadhaar eKYC, but In some cases, Aadhaar-based eKYC reduces document requirements.
- A bank letter or certificate with the applicant’s details (as per the bank records) is also accepted, but it must be certified by the Bank Manager.
Steps to Register Your DSC in Online Banking
Follow these below steps to register your DSC:
Step 1: Log in to your online banking account.
Step 2: Go to Digital Signature - Register Digital Signature Certificate from the menu.
Step 3: Read and accept the Terms & Conditions, then click "Proceed".
Step 4: Click on “Click here to register your certificate.”
Step 5: Select your digital certificate and click “Select.”
Step 6: Enter your digital certificate password to authenticate.
Step 7: Click “Submit” to continue.
Step 8: Enter the One-Time Password (OTP) sent to your registered mobile number and click “Confirm.”
Step 9: You’re done! Your digital certificate is now registered.
*You can view your registered DSC anytime under the Digital Signature page.
Note: If in case your certificate name doesn’t exactly match the name in our records, your registration will be processed within 2 working days.
How to Use Your DSC? (Installation + Token)
- After getting your DSC, you can install it on your computer or save it on a USB token.
- Make sure the token drivers are installed (your Certifying Authority (CA) will guide you).
Validity of a DSC
The validity of the Digital Signature Certificate is for 1–3 years. You’ll need to renew it before it expires to keep using it without a break.
Legal Status of DSC
In India, digital signatures are legally valid under the Information Technology (IT) Act, 2000. This law was introduced to support online transactions and make digital processes safe and reliable.
Section 3 of the IT Act, 2000 explains how electronic records are authenticated using digital signatures. It states that a digital signature is created using a private and public key system, which helps keep the document secure and verifies the identity of the signer.
Section 5 of the IT Act, 2000 provides legal recognition to digital signatures. It clearly states that a Digital Signature Certificate (DSC) has the same legal value as a handwritten signature. This means that documents signed electronically cannot be rejected merely because they are in digital form.
To ensure security and trust, DSCs are issued under strict regulations. The Controller of Certifying Authorities (CCA) monitors and authorizes the organizations that issue these certificates.
Important Note:
A Digital Signature Certificate (DSC) is more than just an online signature. It’s not a typed name or a scanned image—it’s a highly secure digital tool that protects your documents and is fully recognized by courts as a valid signature.
When you sign a document with a DSC, it uses a private key (only you have) and a public key to create a unique digital fingerprint. This ensures:
Authentication: Confirms the signer is really you.
Integrity: The document is sealed digitally, and any changes after signing make the signature invalid (If even a single word or comma is altered after signing, the signature instantly becomes invalid).
Non-Repudiation: Under the Indian Evidence Act, 1872 (specifically Sections 85A, 85B, and 85C), courts automatically presume digital signatures are authentic, Because the signature is tied to your verified identity and private key, you cannot legally deny having signed the document.
Who can use Class 3 DSC?
Individuals and organizations can use Class 3 DSC for high-security transactions such as e-filing, e-tendering, and government submissions.
Earlier, physical verification was required. However, now verification may be completed through video verification or Aadhaar-based eKYC, depending on the Certifying Authority.
Within Digital Signature Certificates (DSCs), there are two main functions that make them useful and secure (i.e. Signing and Encryption).
A Signing DSC is used to verify identity and approve documents. It shows who signed the document and ensures that it has not been changed. If the document is modified after signing, the signature becomes invalid.
An Encryption DSC is used to secure data before it is sent online. It ensures that only the intended recipient can access and read the information. The data remains protected and unreadable to third parties. Unlike a Signing DSC, it is not used for signing but purely for data protection. Even if the data is intercepted (Stop), it cannot be read without the private key.
A Sign + Encrypt Combo DSC combines both functions in one certificate, allowing users to sign and secure data using a single USB token.
Usage of Signing DSC, Encryption DSC, and Sign + Encrypt DSC
| User Type | Signing DSC | Encryption DSC | Sign + Encrypt DSC |
|---|---|---|---|
| Indian Citizen | Used for signing online documents like e-forms, Income tax returns (ITR), ITR audits, GST filings, and other official submissions to verify your identity and give approval. | Used to safely send personal data over the internet without any risk of it being accessed by others. | Used for both signing documents and securely transmitting data using a single DSC. |
| Indian Organization | Indian organizations can use DSC for MCA filings, GST returns, Startup-related filings, and e-Tendering. But the DSC is always used by an authorized individual representing the organization, not the company directly. | Used to safeguard confidential business data during online communication and submissions. | Used to digitally sign filings and encrypt (Protect) business data with one certificate. |
| Foreign Individual | Used for signing Indian regulatory documents (e.g., as a director in an Indian company). | Used to securely share personal or business information across borders. | Used for signing Indian filings and sending important data safely to other countries (internationally). |
| Foreign Organization | Used by authorized representatives to sign compliance documents and agreements in India. | Used to protect sensitive international business data and communications. | Used to sign documents and keep data safe in international transactions (Work). |
*For most users, a Signing DSC is sufficient. A Sign + Encrypt DSC is mainly required for specialized use cases such as e-tendering and secure data transmission. And for MCA filings, only a Signing DSC is mandatory—an encryption DSC is not required.
Note: Do not confuse DSC, eSign, and Aadhaar eSign. All three are different from each other, and their purpose, validity, and structure vary depending on how they are used in documents.
A Digital Signature Certificate (DSC) is a specific type of digital signature primarily used for online filings. When a DSC is attached to a document, it indicates that the information provided has been verified and approved by the individual to whom the DSC belongs.
{A DSC (Digital Signature Certificate) is used to sign online documents like e-forms, income tax returns (ITR), ITR audits, GST filings, and other official submissions to verify your identity and give approval.
It is also required when registering a startup under Startup India and while incorporating a private limited company.}
Real-life Example Based on Director DSC and Professional Certification Usage
Mr. Sharma is a Chartered Accountant and holds a Signing DSC issued in his name. His client, Mr. Verma, is a director of XYZ Pvt. Ltd., and he also holds a DSC in his own name.
Whenever Mr. Verma needs to file company incorporation forms or annual returns on the Ministry of Corporate Affairs portal, the director’s DSC (Mr. Verma’s DSC) is used for signing the documents as the authorized signatory of the company. In addition, where professional certification or verification is required, the Chartered Accountant (Mr. Sharma) may also use his DSC to certify the filing.
This means the documents are legally filed on behalf of XYZ Pvt. Ltd., and the DSCs used belong to both the director (Mr. Verma) and the professional Chartered Accountant (Mr. Sharma), depending on their respective roles in the filing process.
[Don’t get confused—this does not mean only a CA’s DSC is required. A professional DSC used for certification can belong to any qualified practicing professional such as a Chartered Accountant (CA), Company Secretary (CS), or Cost and Management Accountant (CMA). For document certification or verification purposes, the DSC of any eligible whole-time practicing professional can be used, depending on the legal requirement and the nature of the filing.]
Conclusion
By going through this guide, you now have a clear understanding of what a DSC is, why it’s important, where it’s used, and how to get one. Whether you’re an individual, a business owner, or just learning about it, this information will help you use DSCs with confidence.
A DSC is not just a technical tool - it’s a legally valid signature in India, just like your handwritten one. It adds a strong layer of security, ensures authenticity, and makes sure your documents cannot be changed or denied later.
Today, DSCs have become an essential part of doing business in India. They make dealing with government platforms easy, secure, and completely paperless. By choosing the right DSC, keeping it updated, and using it properly, you can stay compliant and keep your digital transactions safe.
Disclaimer: The information in this article is for general purposes only and may not fit your personal situation. It is not legal, financial, or professional advice, and you should not rely on it as such. Before making any decisions, consider if this information applies to you and, if needed, get advice from a professional. The information is correct at the time of publication. While we have tried to ensure it is accurate, Finodha.in is not responsible for any loss or damage caused by using this information.
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Frequently Asked Question!
Question. Who issues Digital Signature Certificate?
Answer. A licensed Certifying Authority (CA) issues the Digital Signature Certificate. The Certifying Authority (CA) is someone who has been granted a License to issue a DSC under Section 24 of the Indian IT-Act 2000.
Question. What is a Digital Signature Certificate?
Answer. A Digital Signature Certificate (DSC) is like an online ID card that proves your identity when signing documents on the internet. Instead of using a pen, you use a secure digital key stored in a USB token to safely file taxes, submit forms, or do business online.
Question. Why is Digital Signature Certificate (DSC) required?
Answer. A Digital Signature Certificate (DSC) is basically your online ID card. It proves who you are when signing documents on the internet and makes sure they’re genuine and safe. It helps stop fraud, keeps information secure, and is required for filing taxes, company work, and government tenders.
Question. Who issues the Digital Signature Certificate?
Answer. Digital Signature Certificates (DSCs) in India are issued by licensed Certifying Authorities (CAs) like eMudhra, Sify, NIC, NSDL, CDAC, and Capricorn. These are approved by the Controller of Certifying Authorities (CCA) under the Ministry of Electronics and IT. They verify your identity and give you a secure USB token to use for safe online filings and transactions.
Question. What type of Digital Signature Certificate (DSC) is to be obtained for eSigning and Authentication on the eTendering Portal?
Answer. For eTendering, you need a Class 3 Digital Signature Certificate (DSC). It is compulsory because it gives the highest security, confirms your identity, and lets you safely log in, sign bids, and submit tender documents online. Without Class 3 DSC, you cannot take part in government tenders.
Question. What is the cost of obtaining a Digital Signature Certificate?
Answer. The cost of a Digital Signature Certificate (DSC) in India depends on the type of certificate, how long it’s valid, and which Certifying Authority issues it. Usually, it costs between ₹1,500/- and ₹2,000/- for 1–3 years. Prices vary for individuals, organizations, and DGFT certificates.
Question. How to obtain DSC for contractors/bidders?
Answer. To get a Digital Signature Certificate (DSC), first choose a licensed Certifying Authority like eMudhra, Sify, or NSDL, and fill out their online application form. Submit your ID and address proof, and complete a quick verification (video or in-person). Once approved, your Class 3 DSC is issued, usually stored on a secure USB token for online use like e-tendering.
Question. How much time do CAs take to issue a DSC?
Answer. It usually takes 1–3 working days to issue a DSC after you submit the application, documents, and complete verification. With Aadhaar eKYC and video verification, it can often be issued the same day.
Question. What is the validity period of a Digital Signature Certificate?
Answer. A Digital Signature Certificate (DSC) is valid for 1 to 3 years, depending on the option you choose when purchasing. Once it expires, you’ll need to renew it to keep using it.
Question. What is the legal status of a Digital Signature?
Answer. A Digital Signature Certificate (DSC) has full legal validity in India. Under the Information Technology Act, 2000, it is treated the same as a handwritten signature. DSCs authenticate electronic records, make e-contracts legally binding, and are admissible in court as evidence.
Question. Is a company required to obtain a Digital Signature Certificate in its own name for eTendering?
Answer. No, a company is not required to obtain a digital signature certificate (DSC) in its own name for eTendering.
Instead, the DSC is issued in the name of an authorized individual (such as a director, partner, or authorized signature) who performs on behalf of the company.
Question. Can I do e-filing of documents if I do not possess a DSC?
Answer. Yes, you can do e-filing without a DSC for some services using Aadhaar-based eSign or other verification methods. However, for company filings, like GST , income tax (for companies), and MCA forms, a DSC is generally required to ensure security, authenticity, and legal validity of documents.
Question. When do I need to re-register my DSC?
Answer. You only need to re‑register your DSC when it expires, or if there’s a change in the signatory, your details, or the USB token.
Question. Where can I procure a DSC?
Answer. You can procure/get a Digital Signature Certificate (DSC) from licensed providers in India like eMudhra, Sify, Capricorn, NIC, or NSDL. Just apply online or through their agents, complete identity verification, and they’ll issue your DSC, usually within 1–3 working days.
Question. Is the DSC always registered against the PAN of a user?
Answer. Yes, a Digital Signature Certificate (DSC) is generally registered against the PAN of the individual user in India.
Question. Is DSC mandatory for certain services / users?
Answer. Yes, it is mandatory for certain services and users.
Question. While registering a DSC, the message 'The Digital Signature Certificate is already registered' is displayed. What should be my course of action?
Answer. If you see the message “The Digital Signature Certificate is already registered”, it means your DSC is already linked to the portal. In that case, simply use the existing registration to log in. If you need changes, contact the portal’s helpdesk to update or re‑register.
Question. Whose DSC is required to be used for verification of ITRs and Statutory Forms for Non- Individual Taxpayers like Company / Firm / HUF?
Answer. The DSC of the person officially authorized to sign on behalf of the entity is required for verification of ITRs and statutory forms.
Question. If I already have a DSC, do I need a new one for e-Filing?
Answer. If you already have a valid DSC, you don’t need a new one for e‑Filing. Just register your existing DSC on the Income Tax portal. A new DSC is only required if the old one has expired, your details have changed, or the USB token is lost or damaged.
Question. What is a DSC PIN? Where can I get it?
Answer. A DSC PIN is simply the password that unlocks your Digital Signature Certificate stored in the USB token. You get it from the Certifying Authority (like eMudhra, Sify, Capricorn, etc.) when your DSC is issued — usually shared during setup or sent by email. If forgotten, you must contact the issuing authority to reset it.
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