Explore · The library

Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. Answers the practical follow up question a founder hits right after GST: can I even take payments without one. Written by a... PhonePe Business Article · D2C Payment Gateway Without GST: Can You Accept Online Payments? PhonePe
  2. Spells out the actual cost of treating GST as optional: the penalty math under Section 122, the 18% interest clock, and the... Masters India Article · D2C Penalty for Not Registering or Late Registering Under GST Masters India
  3. A free way to sanity check any GSTIN, your own once issued, or a supplier's before you extend credit, without waiting on a CA. ClearTax Tool · D2C GST Number Search Tool - GSTIN Verification Online ClearTax
  4. Written by a payment company that onboards thousands of small sellers, so it frames GST registration around the real founder... Razorpay Learn Article · D2C GST Registration for Small Business - Minimum Turnover, New Rules & Benefits Razorpay
  5. Video · D2C GST Registration Guide for Ecommerce Sellers YouTube
  6. The clearest global explainer of economic nexus, the international equivalent of India's e-commerce mandate: the idea that... Stripe Article · D2C Introduction to US Sales Tax and Economic Nexus Stripe
  7. Shopify's own 2026 guide to US sales tax makes the same core point GST does for India: the platform will not register or remit... Shopify Article · D2C Ecommerce Sales Tax: Complete Guide for US Businesses (2026) Shopify
  8. A tax compliance vendor's FAQ that lays out registration timing cleanly: register before you start selling in a jurisdiction,... Avalara Report · D2C Sales Tax Registration FAQ Avalara
  9. If a D2C brand ever ships direct to Europe, this explains the EU's equivalent to India's threshold question: a EUR 10,000 cross... amavat Article · D2C VAT OSS Threshold Explained: What Happens After EUR 10,000 amavat
  10. The global founder community version of the exact question in this brief: whether to formalise before revenue or wait, useful... Indie Hackers Thread · D2C You Don't Need an LLC... Yet. How and When to Form a Business Entity Indie Hackers
  11. A free, self-paced government training module that simulates the actual registration screens, useful if you would rather watch... GST Portal (tutorial.gst.gov.in) Course · D2C Applying for GST Registration (Computer Based Training) GSTN
  12. Video · D2C GST Registration in 30 Minutes: How to Apply GST Number Under Rule 14A CA Pooja Gupta / CA Pankaj Goel (CA Guru Ji)
  13. Explains the newest fast track (effective November 2025, Notification 18/2025) that most CA firm websites have not caught up... TaxGuru Report · D2C All About New GST Registration Rule 14A: 3-Day Auto Approval TaxGuru
  14. Razorpay writes this for the same founders opening a payment gateway account right after GST registration, so the document set... Razorpay Learn Article · D2C Documents Required for GST Registration: A Checklist Razorpay
  15. One of the more complete entity-by-entity breakdowns available, useful if you are still deciding between registering as a... IndiaFilings Article · D2C GST Registration Documents Required for Businesses IndiaFilings
  16. Most D2C founders start out of a home or a relative's property rather than a formally rented office, and this is the single... ClearTax Template · D2C Consent Letter for GST Registration: Format and Requirements ClearTax
  17. Written specifically for online sellers, this covers the document gap founders discover only after they are already live, that... ComplyLocal Article · D2C Additional Place of Business (APOB) in GST: Add Amazon and Flipkart Warehouses ComplyLocal
  18. Many D2C brands incorporate as an LLP before scaling to a private limited company, and the document set for an LLP (LLP... myHQ Article · D2C GST Registration for LLP: Step-by-Step Guide (2026) myHQ
  19. Written by a business banking platform that watches founders go through registration constantly, this is a practical... OPEN Money Blog Article · D2C GST Registration: 10 Common Issues and Fixes Open Financial Technologies
  20. A tax practitioner's plain-language breakdown of the same CBIC instruction on the day it dropped, useful as a five-minute... X (FinTaxPro) Thread · D2C CBIC issues Instruction No. 03/2025-GST to streamline GST registration processing FinTaxPro
  21. Once your GSTIN comes through, this is the single-volume reference Indian tax professionals actually keep on their desk, worth... Taxmann Book · D2C Taxmann's GST Ready Reckoner V. S. Datey
  22. Video · D2C GST Registration Process, New GST Number Apply CA Pooja Gupta, CA Guru Ji
  23. The government's own FAQ on the composition levy, straight from the department that writes the rules. Use it to check any... CBIC (Central Board of Indirect Taxes and Customs) Report · D2C Frequently Asked Questions on Composition Levy CBIC (Central Board of Indirect Taxes and Customs)
  24. The actual CGST Rules governing composition, not a third party paraphrase. A five minute read before you trust any summary... CBIC (Central Board of Indirect Taxes and Customs) Article · D2C Composition Rules CBIC (Central Board of Indirect Taxes and Customs)

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