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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. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. Written for the exact reader of this question, the D2C founder about to sell on a marketplace, and confirms Amazon's own... Amazon Seller Blog (sell.amazon.in) Article · D2C Documents Required for Goods and Services Tax (GST) Registration Amazon
  9. Address proof is the single most common reason a solo application stalls; this walks through reading a REG-03 clarification... myHQ Blog Article · D2C GST Registration Rejected? Complete Fix and Reapply Guide myHQ
  10. Worth bookmarking before you start: the actual toll free number and grievance channels for when the portal itself breaks, an... ClearTax Article · D2C GST Helpline Number and Email ID ClearTax
  11. If you want the whole GST landscape in one sitting rather than piecing it together from blog posts, this is a short, current,... Amazon Kindle Book · D2C GST for Small Business and Startups: Essential Compliance and Practical Strategies for MSMEs in India Akhila S
  12. GST rules change often, Rule 14A itself only launched in November 2025, so subscribing keeps you from registering under a... Substack Newsletter · D2C GST News GST News
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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)
  21. 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)
  22. India's most widely used tax platform, kept current, and the cleanest single reference for exact rates and turnover limits... ClearTax Article · D2C GST Composition Scheme: Rules, Turnover Limit, Rate, Benefits ClearTax
  23. Goes straight at the exact question a maker selling online is asking: does composition even work if I'm on a marketplace, and... Busy.in Article · D2C GST Composition Scheme Rules for E-commerce Sellers and Online Retailers Busy.in
  24. Unpacks the exact Section 52 mechanism our short answer leans on, so you understand why marketplaces withhold a cut and how... GST Gyaan Article · D2C Guide on Section 52 of the CGST Act: Collection of Tax at Source (TCS) under GST GST Gyaan

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