Flipkart B2CS Converter
Convert Flipkart GST Excel reports to GSTR-1 B2CS format instantly with automatic data grouping, aggregation, and formatting.
Introduction
Selling on Flipkart generates monthly GST reports in Excel format containing detailed transaction data for every sale, but these reports are not structured in the B2CS (Business to Consumer - Small) format required by the GST portal for GSTR-1 filing. The GST portal demands data grouped by Place of Supply (state) and Tax Rate, with aggregated taxable values and cess amounts, proper state codes, correct column names and ordering, and inclusion of the E-Commerce GSTIN (Flipkart's GSTIN). Manually reformatting Flipkart's Excel report—which could contain hundreds or thousands of rows spanning 20+ states with multiple GST rate slabs (5%, 12%, 18%, 28%)—into compliant B2CS format is tedious, time-consuming, and error-prone. You would need to group transactions by state and rate, sum taxable values for each group, verify state codes, ensure column structure matches GST portal requirements exactly, and handle any data inconsistencies or missing values. This entire process can take hours for a single month's data, especially during high-volume sales periods. This tool eliminates all that manual work by automating the complete Flipkart Excel to GSTR-1 B2CS conversion in seconds, processing everything securely in your browser without uploading your sensitive sales data anywhere. Simply upload your Flipkart GST Excel file, and the tool reads the 'Section 7(B)(2) in GSTR-1' sheet, validates the data structure, groups all transactions by Place of Supply and Tax Rate, aggregates taxable values and cess amounts for each group, maps state names to official codes, formats the output in the exact B2CS structure the GST portal accepts, and generates a downloadable Excel file with a properly formatted B2CS sheet ready for direct upload. The tool handles all the complexity—reading Excel files, parsing transaction data, performing grouping and aggregation logic, managing state code mappings, applying GST portal formatting rules, and generating compliant Excel output—so you can focus on your business instead of data wrangling. Everything processes locally on your device using JavaScript, ensuring your Flipkart sales data, business metrics, and customer information remain completely private and never leave your computer.
Who Should Use This Tool?
- Flipkart sellers filing GSTR-1 monthly or quarterly
- Accountants managing Flipkart seller GST compliance
- Tax consultants handling multiple e-commerce clients
- Small business owners selling on Flipkart India
- Chartered accountants preparing B2CS GST returns
- E-commerce finance teams automating GST workflows
- Sellers with high transaction volumes across states
- Anyone needing Flipkart to GST portal conversion
How This Tool Works
This tool processes Flipkart GST Excel files entirely in your browser using JavaScript, converting them to GSTR-1 B2CS format without any server interaction, ensuring complete privacy for your sales data. When you upload a Flipkart Excel file, the tool uses the SheetJS (xlsx) library to read the file binary data directly in memory. It specifically looks for the sheet named 'Section 7(B)(2) in GSTR-1', which is the standard sheet name Flipkart uses for GST data. The tool validates that this sheet exists and contains the required columns: GSTIN, Aggregate Taxable Value Rs., IGST %, CGST %, SGST %, Cess Amount, Delivered State (PoS), and Delivered State Code. If the sheet is missing or columns are incorrect, the tool displays an error message explaining the issue. Once validated, the tool parses each data row, extracting the delivered state name and code, identifying the tax rate (prioritizing IGST % for interstate sales, or summing CGST % + SGST % for intrastate sales), reading the taxable value and cess amount, and storing all this information in memory. The tool then performs grouping by creating a unique key for each combination of Place of Supply (state code) and Tax Rate, iterating through all transactions and adding them to the appropriate group, and summing the taxable values and cess amounts for each group. This grouping operation transforms hundreds of individual transaction rows into a concise set of aggregated rows—one per unique state-rate combination. After grouping, the tool constructs the B2CS output data structure following the exact format specified by the GST portal: Type (always 'OE' for e-commerce operator supply), Place Of Supply (combining state code and name, e.g., '29-Karnataka'), Applicable % of Tax Rate (always blank for B2CS), Rate (the GST rate percentage), Taxable Value (the aggregated sum for this group), Cess Amount (aggregated cess, typically zero for most products), and E-Commerce GSTIN (Flipkart's GSTIN, defaulting to 08AABCF1771M1ZN but configurable). This formatted data is written to a new Excel workbook using SheetJS, creating a sheet named 'B2CS' with proper column headers, cell formatting, and data types that match GST portal requirements. The Excel file is then converted to a binary blob and downloaded to your device using the browser's download API, with a filename like 'Flipkart_B2CS_YYYY-MM-DD.xlsx'. The tool also displays a conversion summary showing the number of input rows processed, output grouped rows generated, and total taxable value—allowing you to quickly verify the conversion results before uploading to the GST portal. This entire workflow happens client-side with no network requests, no server processing, and no data storage, guaranteeing that your sensitive Flipkart sales data remains private and secure on your device throughout the entire conversion process.
Try Flipkart B2CS Converter Now
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Flipkart to GSTR-1 B2CS Converter
Default GSTIN for Flipkart. Update if needed.
Important Notice
This converter tool is for informational purposes only. Please verify the generated B2CS data before uploading to the GST portal. Ensure your Flipkart Excel file contains the sheet named "Section 7(B)(2) in GSTR-1" with correct data. All data processing happens locally in your browser - no data is uploaded to any server.
What Gets Converted
- ✓ Reads "Section 7(B)(2) in GSTR-1" sheet
- ✓ Groups by Place of Supply and Rate
- ✓ Aggregates Taxable Value and Cess
- ✓ Formats for GST portal B2CS upload
Privacy & Security
- ✓ 100% client-side processing
- ✓ No data uploaded to servers
- ✓ Files stay on your device
- ✓ GSTR-1 compliant format
How to Use Flipkart B2CS Converter
Download Flipkart GST Excel Report
Log in to Flipkart Seller Hub and navigate to the GST Reports section. Download your monthly GST report in Excel format (typically .xlsx). Make sure the downloaded file contains the sheet named "Section 7(B)(2) in GSTR-1"—this is the standard sheet Flipkart uses for e-commerce operator supply data. The sheet should include columns like GSTIN, Taxable Value, IGST %, CGST %, SGST %, Delivered State, and Delivered State Code. If you are unsure which report to download, look for the GST B2C or E-Commerce Operator report in your Seller Hub.
Configure E-Commerce GSTIN (Optional)
The tool pre-fills Flipkart's E-Commerce GSTIN (08AABCF1771M1ZN by default) in the B2CS output. This is the GSTIN that will appear in the E-Commerce GSTIN column of your B2CS file. If you need to use a different GSTIN for any reason (e.g., different marketplace or specific billing entity), you can update this field before conversion. For most Flipkart sellers, the default GSTIN is correct and requires no changes. The GSTIN must be a valid 15-character alphanumeric identifier.
Upload Flipkart Excel File
Click the upload area or drag and drop your downloaded Flipkart Excel file onto the tool. The tool accepts .xlsx and .xls formats. Once uploaded, the tool automatically reads the "Section 7(B)(2) in GSTR-1" sheet, validates the data structure (checking for required columns), and parses all transaction rows. You will see a preview or summary showing the number of transactions detected. All processing happens locally in your browser—your Flipkart sales data is never uploaded to any server, ensuring complete privacy and security.
Convert and Download B2CS File
Click "Convert to B2CS" to process the data. The tool groups all transactions by Place of Supply (state) and Tax Rate, aggregates taxable values and cess amounts for each group, formats the data in the exact B2CS structure required by the GST portal (including Type, Place Of Supply, Rate, Taxable Value, Cess Amount, E-Commerce GSTIN columns), and generates a new Excel file with a B2CS sheet. You will see a conversion summary showing input rows, output grouped rows, and total taxable value. Click "Download B2CS Excel" to save the file, then upload it directly to the GST portal for GSTR-1 filing.
Use Cases for Flipkart B2CS Converter
Flipkart Sellers Filing GSTR-1 Returns
If you sell on Flipkart, you receive monthly GST reports in Excel format containing detailed transaction data. These reports are not in the B2CS format required by the GST portal for GSTR-1 filing. Manually reformatting and grouping hundreds or thousands of rows is time-consuming and error-prone. For example, if you have 500 transactions across 20 states with varying GST rates (5%, 12%, 18%), you need to group by state and tax rate, sum taxable values, and format exactly as the GST portal expects. This tool automates the entire process—upload your Flipkart Excel, get a B2CS-formatted file in seconds, ready for direct GST portal upload. No manual work, no errors, no hassle.
Accountants Managing Multiple Flipkart Seller Accounts
Tax consultants and accountants often handle GST filing for multiple Flipkart sellers. Each client provides their Flipkart GST Excel every month, and converting each one manually becomes repetitive and time-intensive. Using this tool standardizes the conversion process across all clients—upload Excel, download B2CS—creating consistency and saving hours every filing cycle. Reduces processing time per client from 30-60 minutes to under 2 minutes. The client-side processing also ensures sensitive client sales data never leaves your device, maintaining strict confidentiality and compliance with data privacy regulations.
Businesses Verifying GST Data Before Portal Upload
Before uploading B2CS data to the GST portal, it is critical to verify accuracy—ensure totals match expectations, tax rates are correct, state codes are mapped properly, and no transactions are missing or duplicated. After converting with this tool, open the generated Excel file and review the grouped B2CS data, comparing aggregated totals against your own records or Flipkart summary reports. The conversion summary (showing input rows, output rows, total taxable value) provides a quick sanity check. This verification step catches potential issues before GST submission, avoiding amendments, penalties, or compliance problems.
Handling High-Volume Sales Across Multiple States
Flipkart sellers often ship to customers in all Indian states, creating a complex mix of interstate and intrastate sales with varying GST rates depending on product categories. The B2CS format requires grouping by Place of Supply (state) and Tax Rate, meaning you could have dozens of unique combinations to calculate and format. For example, selling in 25 states with 3 different GST rate categories creates 75 potential grouped rows. This tool handles the complexity automatically—correctly identifying tax rates (IGST for interstate, CGST+SGST for intrastate), mapping state names to codes, grouping by state-rate pairs, aggregating taxable values, and formatting output precisely as the GST portal requires.
Seasonal Sellers with Fluctuating Transaction Volumes
Many Flipkart sellers experience seasonal spikes during festivals (Diwali, Big Billion Days), holidays, or sales events, where monthly transaction volumes surge from hundreds to thousands. Manual GST data conversion becomes completely impractical during these high-volume periods. This tool scales effortlessly—processes 100 transactions or 10,000 transactions with the same speed and accuracy. During off-peak months, quickly convert small datasets; during peak months, handle massive files without bottlenecks or performance degradation. Browser-based processing ensures consistent fast results regardless of file size or timing.
Key Features
Excel File Reading
Reads .xlsx and .xls Excel files directly in the browser.
Sheet Auto-Detection
Automatically finds 'Section 7(B)(2) in GSTR-1' sheet in Flipkart files.
Column Validation
Validates presence of required columns like Taxable Value, IGST %, State.
State-Rate Grouping
Groups transactions by Place of Supply and Tax Rate automatically.
Taxable Value Aggregation
Sums taxable values for each state-rate combination accurately.
Cess Amount Aggregation
Aggregates cess amounts (typically zero) for each group.
Tax Rate Detection
Identifies IGST for interstate or CGST+SGST for intrastate sales.
State Code Mapping
Maps delivered state names to official Place of Supply codes.
Configurable GSTIN
Allows customization of E-Commerce GSTIN (defaults to Flipkart's).
B2CS Format Output
Generates exact B2CS format required by GST portal.
Excel File Generation
Creates properly formatted Excel file with B2CS sheet.
Conversion Summary
Shows input rows, output rows, and total taxable value for verification.
Error Handling
Provides clear error messages for missing sheets or columns.
Large File Support
Handles thousands of transactions without performance issues.
Client-Side Processing
All processing in browser—no server upload, complete privacy.
Frequently Asked Questions
What is the B2CS format in GSTR-1, and why do I need it?
B2CS stands for Business to Consumer - Small, a specific format required for filing GSTR-1 returns on the GST portal. It applies to sales made to unregistered consumers (B2C transactions) where the invoice value is less than ₹2.5 lakh. When you sell on Flipkart, you are acting as a supplier through an e-commerce operator. The GST portal requires you to report these transactions in B2CS format, grouped by Place of Supply (state) and Tax Rate, including the E-Commerce GSTIN (Flipkart's GSTIN). Flipkart provides sales data in their own Excel format, which does not match the B2CS structure the GST portal expects, so conversion is necessary.
Does this tool work for other marketplaces like Amazon or Meesho?
This tool is specifically designed for Flipkart's Excel format, particularly the sheet named "Section 7(B)(2) in GSTR-1". Flipkart structures its GST reports with specific column headers like GSTIN, Aggregate Taxable Value Rs., IGST %, Delivered State (PoS), and Delivered State Code. Amazon and Meesho use different Excel formats and column structures. If you try to upload an Amazon or Meesho report, the tool will likely fail because it will not find the expected sheet name or columns. However, you can configure the E-Commerce GSTIN field, so if another marketplace uses the exact same Excel structure as Flipkart (unlikely), you could potentially use it by changing the GSTIN.
What does the tool do with my data? Is it safe and private?
All processing happens entirely in your browser using JavaScript. When you upload your Flipkart Excel file, the tool reads it directly on your device using the SheetJS library. The conversion process—reading the sheet, grouping by state and tax rate, aggregating values, and generating the B2CS Excel file—all happens client-side in your browser. No data is sent to any server, database, or external service. Your Flipkart sales data, business metrics, and customer information never leave your device. The generated B2CS Excel file is created locally and downloaded directly to your device. Because there is no server interaction, your sensitive business data remains completely private and secure throughout the entire process.
Why is my output B2CS file smaller than the input Flipkart file?
That is expected and correct! Your Flipkart Excel file contains individual transaction rows—one row per invoice or sale. Depending on your sales volume, this could be hundreds or thousands of rows. The B2CS format required by the GST portal demands grouped and aggregated data—all transactions with the same Place of Supply (state) and Tax Rate must be combined into a single row with the taxable values summed. For example, if you have 100 transactions in Karnataka (state code 29) with 18% GST, the tool combines all 100 rows into one B2CS row showing the aggregated taxable value. This grouping is exactly what the GST portal expects and is why your output file has far fewer rows than the input.
Can I edit the B2CS file before uploading it to the GST portal?
Yes! The tool generates a standard Excel file (.xlsx) that you can open in Microsoft Excel, Google Sheets, LibreOffice Calc, or any spreadsheet application. Before uploading to the GST portal, you can review the data, verify totals, and make corrections if needed. Just be careful to maintain the exact column structure and order: Type, Place Of Supply, Applicable % of Tax Rate, Rate, Taxable Value, Cess Amount, E-Commerce GSTIN. The GST portal is strict about format compliance, so avoid changing column names, reordering columns, or deleting mandatory fields. Correcting values is safe; structural changes can cause upload failures at the GST portal.
What should I do if the tool says the sheet is missing or columns are incorrect?
If you see an error about a missing sheet or incorrect columns, verify you downloaded the correct report from Flipkart Seller Hub. The tool expects a sheet named "Section 7(B)(2) in GSTR-1" with specific columns like GSTIN, Aggregate Taxable Value Rs., IGST %, CGST %, SGST %, Delivered State (PoS), and Delivered State Code. If your Excel file does not have this sheet or the columns are named differently, the tool cannot process it. Make sure you are downloading the GST B2C or E-Commerce Operator report from Flipkart, not a different report type. If Flipkart has changed their report format, contact support or check if there is a tool update available.