Explore
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.
- Explains the underlying rule behind the up to 7 working days figure, plus the deemed approval backstop most founders don't know... TaxGuru Article · D2C Time limit increased for grant of GST registration from 3 to 7 working days TaxGuru
- Summarizes the actual GSTN advisory that decides whether you get an easy Aadhaar OTP or a mandatory Suvidha Kendra visit, state... TeamLease RegTech Report · D2C GSTN Advisory for Biometric-Based Aadhaar Authentication and Document Verification (Bihar, Delhi, Karnataka, Punjab) TeamLease RegTech
- Answers the exact timeline question with the working day nuance, weekends and holidays don't count, that catches first time... IndiaFilings Article · D2C In How Many Days Is GST Registration Approved in India? IndiaFilings
- ClearTax is one of the most used filing platforms in India and this guide is written specifically around the newer fast track... ClearTax Article · D2C GST Registration in 3 Days: Step by Step Process Guide ClearTax
- An interactive version of the checklist that generates the exact document list for your specific business constitution instead... TaxBizMantra Tool · D2C Free GST Registration Document Checklist Tool TaxBizMantra
- If you plan to use Amazon FBA or Flipkart FBF warehouses, your GST registration doesn't stop at one state, this explains the... Virtual Office Kochi Article · D2C Multi-State GST for Amazon & Flipkart Sellers: The 2026 Guide Virtual Office Kochi
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Video · D2C
New GST Registration Process from November 2025, Get GST Number in Minutes
YouTube
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Video · D2C
GST New Simplified Registration Process: Step by Step Detailed Guide (2025)
YouTube
- This is the actual GSTN advisory behind the 30-day rule, straight from the regulator rather than a paraphrase, so you know... GSTN (Goods and Services Tax Network) Report · D2C Advisory on Bank Account Validation GSTN (Goods and Services Tax Network)
- The official step-by-step manual for the exact screen you will be on when you add your bank account, so you are not guessing... GST Portal (tutorial.gst.gov.in) Article · D2C Manual: Amendment of Non-Core Fields (Bank Account Validation) GST Portal (tutorial.gst.gov.in)
- Cuts through the portal's cryptic status labels so you actually know whether you're done or still exposed to suspension after... ClearTax Article · D2C All About Bank Validation Status on GST Portal ClearTax
- The clearest field-by-field breakdown of what Rule 46 actually requires, with the HSN-digit rule spelled out by turnover slab... Tally Solutions Article · D2C GST Invoice: Format, Types, Mandatory Fields & Examples Tally Solutions
- A single glance-able calendar to put your GSTR-1/GSTR-3B dates straight into your own calendar instead of hunting through... ClearTax Tool · D2C GST Calendar 2026-27: GST Due Dates, Filing Deadlines and Compliance ClearTax
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Video · D2C
GST Returns Filing 2026: How to file GST Returns, GSTR-1, IMS & GSTR-3B
YouTube
- The rare resource that sequences the tasks in order instead of listing rules alphabetically, so you know what to do this week... CA in Bangalore Template · D2C GST Compliance Guide for First-Time GST Registrants: Month-by-Month Checklist CA in Bangalore
- If you want compliant invoices and eventual e-filing from one tool rather than stitching together a billing app and a separate... Zoho Tool · D2C Zoho Books: GST Billing Software built for Indian SMEs Zoho
- Worth a skim even at invoice-zero, since a DPIIT-recognized D2C startup may qualify for GST and income-tax carve-outs that... Startup India / DPIIT Report · D2C Tax Playbook for Startup Ecosystem (May 2026) Startup India / DPIIT
- The clean global baseline for what belongs on any invoice, useful to sanity-check your GST-specific template is not missing... Xero Article · D2C What to include on an invoice: a complete guide for small businesses Xero
- If your D2C brand plans to sell outside India too, this is the cleanest mental model for treating tax registration as a... Stripe Template · D2C Getting Started: Sales Tax Compliance Checklist Stripe
- If you bill through Shopify, this is the primary doc for where your GSTIN and tax settings actually plug into the platform,... Shopify Article · D2C Shopify Help Center: Taxes Shopify
- A ready-made checklist format, not just an article to read, that you can literally tick through while setting up your invoicing... A2X Template · D2C The ESSENTIAL Ecommerce Bookkeeping Checklist A2X
- Zooms out from the single invoice to the bookkeeping system it feeds into, so your first invoice lands in a set of books that... Shopify Article · D2C Ecommerce Bookkeeping 101 for Small Business: A Step-by-Step Guide Shopify
- This is Meta's own plain language explainer of the auction, the primary source for the three inputs your ad is actually judged... Meta for Business Article · D2C Facebook Ad Auctions Explained Meta for Business
- Once you know the auction has a bid component, this is the clearest breakdown of which bid strategy actually controls what,... Jon Loomer Digital Article · D2C Facebook Ads Bid Strategies: Lowest Cost, Cost Cap, Bid Cap Jon Loomer
The hubs
Starting Up
Find an idea, validate it, build, and land your first customers.
GTM
Go-to-market, from breaking in to how the best teams do it.
D2C
Building a direct-to-consumer brand, India-first.
Wealth
Paying yourself, ESOPs, secondaries, and de-risking founder wealth.
How Founders Use AI
How founders actually put AI to work, mapped topic by topic.
Glossary
Plain-language definitions of the startup and VC terms you'll hit.
eChai Partner Brands
The partnership →