Electronic Invoice

A Complete Guide to Electronic Invoicing for the Business of Today



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E-Invoicing Unlocked: Your Gateway to Smarter Business Transactions


Electronic invoice has emerged as a prime tool of transaction management to ensure the compliance and operational efficiency of today's business in a more digitized, first-century business landscape. This guide will explain what an electronic invoice is, what it can offer, how to generate it, and what challenges organizations might face in its implementation.

Whether a small business or an enterprise, gaining knowledge of e-invoicing can act as a better source to achieve market edge. The use of e-invoice is mandatory for businesses who turnover over 5 Crore.


What Is An Electronic Invoice?


An electronic invoice is the digital version of an invoice standardized and easily exchanged in a business, between its clients and government authorities.
Contrary to the invoice, an electronic invoice utilizes an electronic creation process, validation, and archiving with no chance of erred and respect for the rule of law.

Compulsory Fields Within an Electronic Invoice


  • Invoice Reference Number (IRN): A unique identifier generated for each electronic invoice, critical for tracking and validation.
  • Acknowledgment Number and Date: Computes the GST-inclusive price and the GST-exclusive price.
  • Acknowledgment Number: A confirmation number generated upon successful submit.
  • Date of Acknowledgement: The date of acknowledgement, typically the same day the invoice is issued so that it gets recorded immediately.
  • Supplier and Buyer Information: It would necessarily include the details of the name and GSTIN of both supplier and buyer which may be needed for compliance purposes.
  • Line-Item Details: Itemized breakdown of each item and service description, quantity, price, and tax applicable in order to provide transparency.
  • Taxes: A detailed breakup of taxes applicable wherein CGST, SGST, or IGST shall be applicable based on the transaction being intra-state or inter-state.
  • Date and Time of e- Invoice Generation: A timestamp that records when the electronic invoice was created, crucial for tracking and audit purposes.
  • Payment Terms and Modes: Information detailing payment deadlines, accepted payment methods, and any discounts or credit terms offered, providing clarity on financial terms.
  • Additional Fields: Optional and customizable fields that may include project codes, delivery notes, or other industry-specific information that could add flexibility according to the demands of a business.
  • Digital Signature: A digitally signed electronic invoice with a secure digital signature showing authenticity and ensuring that it is not tampered with.

How To Generate an Electronic Invoice In Sleek Bill?

E-Invoice Sample

Sleek Bill provides an easy-to-use platform for generating e-invoices seamlessly by integrating with the GST e-invoice portal. Follow these simple steps to set up and generate e-invoices:

Step 1: First Proceess on Government Portal

  • 1. Login to NIC E-Invoice Web Portal on - https://einvoice1.gst.gov.in/ and complete the API Registeration Process.

  • 2. Obtain your e-invoice username and password from the portal.

Step 2: Setting Up E-Invoicing in Sleek Bill

  • Login in to Sleek Bill
  • Go in to Preferences
  • Click on E-invoices
  • Enter user-id and pass (which you entered before in API Registeration)
  • Click on Save.
  • Click on Invoice
  • Select Client , Item , Quantity and Rates and Applicable GST,and save invoices
  • At the coener on invoice there is option for E-invoice you have to clcik there and into e-invoice
  • Click on Save and Preview to finalize the e-invoice.

How To Generate an Electronic Invoice Using the Government Portal?

The Government's Electronic Invoice Portal offers an alternative way for producing e-invoices. Follow this step-by-step guide to do it:

Step 1: Register on the Electronic Invoice Portal

  • Visit the Electronic Invoice Portal.
  • Register your business using your GSTIN and other required details.

Step 2: Log In to the Portal

  • Go to the NIC E-Invoice Web Portal at https://einvoice1.gst.gov.in/.
  • Enter your login credentials to access your account.

Step 3: Enter Invoice Details

  • On the dashboard, navigate to the invoicing tools provided by the GST portal.
  • Input all required details:
    Supplier and buyer information
    Item descriptions, quantities, and prices
    Applicable taxes and other necessary data

Step 4. Generate The IRN and QR Code

  • After entering all invoice details, submit the form.
  • The system will generate:
    Invoice Reference Number (IRN): A unique identifier for the invoice.
    QR Code: Contains essential invoice details for validation and compliance.

Step 5. Download and Share

  • Once validated, download the electronic invoice in the prescribed format.
  • Share the invoice:
    With the buyer for transaction purposes.
    With tax authorities for GST compliance.

Government's Electronic Invoice Portal can be relied upon as a source to generate e-invoices. This would provide accurate compliance along with easy access of critical data of invoices to both business and tax authorities.

How Electronic Invoice API Integration Simplifies Operations.


electronic invoice API integration will create an automatic communication between the e-invoice portal and your accounting system for seamless data exchanges. Here's how API integration can optimize your e-invoicing process:

1. Real-Time Data Synchronization

The API allows for automatic data syncing, ensuring up-to-date information across systems.

2. Seamless Compliance

APIs ensure invoices are compliant by verifying data fields, tax details, and generating IRNs automatically.

3. Reduced Manual Errors

Automating electronic invoice generation minimizes human intervention, reducing the potential for errors.

4. Efficient Reporting and Analysis

Integrated APIs can streamline data for reporting, allowing businesses to monitor invoice statuses, payment cycles, and outstanding dues more effectively.

How API integration can optimize your e-invoicing process:

1. Technical Integration Issues

Businesses may need to update or overhaul their existing accounting software to support e-invoicing, which requires some time investment.

2. High Initial Setup Costs

For some small businesses, the initial costs for integrating e-invoicing can be prohibitive.

3. Organizational Resistance

Implementation into a digital system may resist employees who are comforted with the traditional processes, hence there is a great need for change of mind and training.

4. Compliance Complexity

Updates in regulatory e-invoicing standards require business entities to be updated, which is hard without a special compliance team.

Future Trends in E-Invoicing: Automation and AI

The future of electronic invoicing is promising indeed. Technologies like AI and Blockchain are about to take it more to an efficient mark. Some of the trends to watch out for include the following.

  • 1. Automation and AI : Automated solutions powered by AI can handle invoice creation, validation, and submission with minimal human intervention, enhancing efficiency and accuracy.
  • 2. Blockchain Technology: Blockchain technology can create a secure, immutable record of transactions, increasing transparency and trust in e-invoicing.
  • 3. Global Standardization: As more countries embrace digital invoicing, we’re likely to see a move toward globally standardized e-invoicing formats, facilitating international trade.

Benefits of Electronic Invoicing for Businesses

1. Auto GSTR1 Report generation:

When business generate the electronic invoice, then the data is directly punched into the GST system which will automatically generate the GSTR1 it means, the invoice data automatically populated into the GST portal in GSTR1 also it creates the perfect GSTR 3B report so that customers are getting the on time ITC (Input Tax Credit).

2. Enhanced Compliance :

By using a standardized format, electronic invoice reduce manual entry errors, ensuring that all required fields are complete and compliant. This is crucial in jurisdictions with strict invoicing regulations, such as the electronic invoice compliance requirements mandated by many tax authorities globally.

3. Time and Cost Efficiency :

Electronic invoicing significantly cuts down processing time. Instead of printing, scanning, or mailing, invoices are generated and sent with a few clicks. For small businesses, this time savings translates into reduced administrative costs and quicker processing.

4. Improved Cash Flow :

The cash flow cycle also accelerates in the case of electronic invoicing. Automated invoicing leads to quicker payments and better tracking of outstanding invoices, thereby allowing steady cash flow and reducing the risk of delayed payments.

5. Data Security and Integrity :

With features like digital signatures and IRN validation, electronic invoices provide added layers of security. This protects sensitive financial data and assures both parties of the invoice's authenticity, mitigating the risks of tampering.

6. Safe and secure Goods Transport:

If the electronic invoice is generated, then in one click a user can generate e-way bill which will help the businesses and transporters for hassle-free goods transport. E-way bill and electronic invoice QR code help government authority such as RTO, Police, Customs departments to easily verify and authenticate the electronic invoice and e-way bill.

Compliance and Legal Requirements for Electronic Invoice

Please go through the following step-by-step guide to begin with it.

There are some compliances needed to be followed for avoiding penalties for ensuring valid invoices.

  • Standardized Format : Follow the prescribed invoice format, as required by the governing tax authority, for consistency and data accuracy.
  • Accurate Tax Breakdown : Properly itemize taxes like CGST, SGST, or IGST, depending on the transaction type (intra-state or inter-state).
  • Archiving and Record-Keeping : Store all electronic invoices electronically for a specified period to facilitate audits and compliance checks.

How electronic invoice API Integration Simplifies Operations?

electronic invoice API integration will create an automatic communication between the e-invoice portal and your accounting system for seamless data exchanges. Here's how API integration can optimize your e-invoicing process:

  • Real-Time Data Synchronization: The API allows for automatic data syncing, ensuring up-to-date information across systems.
  • Seamless Compliance: APIs ensure invoices are compliant by verifying data fields, tax details, and generating IRNs automatically.
  • Reduced Manual Errors: Automating electronic invoice generation minimizes human intervention, reducing the potential for errors.
  • Efficient Reporting and Analysis: Integrated APIs can streamline data for reporting, allowing businesses to monitor invoice statuses, payment cycles, and outstanding dues more effectively.

Why E-Invoicing is Essential for Modern Businesses

It is no longer a choice but rather a must for those companies to stay competitive. Electronic invoicing offers better compliance and better security of data and workflow efficiency to companies.

Whether in the form of cutting costs as a small business or scale as a large enterprise, e-invoicing is a sustainable answer for the digital era. With features like reducing errors, saving time, and a certain guarantee of compliance, e-invoicing is bound to lay the cornerstones of a smoother, more reliable invoicing process for all. Adopt e-invoicing today to ensure your business's future, as digital economies grow ever bigger.

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