E-Commerce Seller Compliance Calendar 2026-27: GST, DPDP, Consumer Rules and Legal Metrology

As of 9 November 2026, five dated changes land on Indian e-commerce sellers before July 2027: GST Rule 14B from 1 November 2026, DPDP consent-manager rules on 13 November 2026, the Consumer Protection (E-Commerce) (Amendment) Rules on 1 January 2027, the DPDP core duties on 13 May 2027 and the country-of-origin filter, reported for 1 July 2027. The table below gives each date and its source. This is general information, not tax or legal advice; confirm with a chartered accountant or lawyer.

What are the key dates, in order?

Details for each follow.

What changed on 1 November 2026 for GST?

Central Tax Notification No. 05/2026, G.S.R. 919(E), dated 26 October 2026, amends the CGST Rules and says that, save as otherwise provided, the rules come into force on 1 November 2026. It inserts Rule 14B, under which a person registered in one State may obtain registration against the same PAN in another State where they have no physical presence, by declaring a warehouse of a section 52 e-commerce operator as the principal place of business. Read our Rule 14B guide before applying, because it has conditions we do not repeat here.

What are the monthly GST and TDS deadlines?

Not dated here, on purpose. We could not open an official page that states the GSTR-1, GSTR-3B and TDS 194-O due dates, and the GST portal's returns help page we did open lists the forms without dates. Use the due-date calendars on the GST portal and the Income Tax e-filing portal, or ask your accountant. Two things we could confirm:

• The marketplace, as operator, deposits TCS and files its monthly statement in FORM GSTR-8 by the 10th of the following month.
• TCS collected on your sales is credited to your electronic cash ledger on the basis of the operator's GSTR-8, and you can use it when you pay your GST liability.

The TCS rate was cut from 0.5% to 0.25% each for CGST and SGST and from 1% to 0.5% for IGST by Notification 15/2024-Central Tax of 10 July 2024. See our GST TCS guide and TDS 194-O guide for how both show up in your payouts.

What starts on 1 January 2027?

The Consumer Protection (E-Commerce) (Amendment) Rules, 2026 come into force from 1 January 2027. The Press Information Bureau release lists these changes:

• every e-commerce entity joins the National Consumer Helpline convergence process;
• sponsored listings are identified through clear and prominent disclosures;
• announced price cuts show both the reduced price and the prior price, the lowest price in the preceding 30 days;
• entities comply with the 2023 dark patterns guidelines, run a yearly self-audit and display a compliance certificate;
• marketplaces provide best-before or use-before dates, returns, refund, warranty, delivery and payment details;
• importer details and country of origin are disclosed for imported goods.

Sellers must also give a government identification number such as a GSTIN or MSME number. Our E-Commerce Amendment Rules guide has the seller checklist.

What about DPDP?

Rule 4 on consent managers applies from 13 November 2026, and the core duties apply from 13 May 2027. One compliance review found no notified compression of that timeline as of 1 November 2026. Our DPDP timeline has the working plan.

What about Legal Metrology and country of origin?

The filter rule has moved. A February 2026 press report gave 1 July 2026, but a later law-firm article says the filter applies only from 1 July 2027 and warns against confusing it with the 1 January 2027 date. We could not open the gazette to settle it, so treat 1 July 2027 as the working date and verify. Details are in our country-of-origin filter guide.

What is not on the calendar, and why?

Several product-level rules have no single start date, so they do not fit a calendar, but they decide whether a listing stays live. BIS certification for regulated product categories, FSSAI rules for food and Legal Metrology declarations on packaged goods apply whenever you list. Our guide to BIS certificates for marketplace sellers and our Legal Metrology guide cover them. Treat them as standing duties, and check them again before each festive season.

How should I use this with the festive and sale calendar?

Sales are where several of these rules bite at once: price cuts need an honest price history, sponsored placements need marking, and returns and warranty terms need to match what you promise. Plan the compliance tasks around your sale dates in the sale calendar for 2027, and finish the data clean-up at least a month before each event, because marketplaces may take time to process attribute changes.

What should I do each quarter?

This sequence is our suggestion, not a legal requirement. Assign one owner per row, put the dates in a shared calendar with a reminder four weeks ahead, and revisit the table whenever a new notification appears, because the origin-filter date alone has changed once already.

FAQ

What is the next compliance deadline for e-commerce sellers in India? The next dated change we confirmed is 13 November 2026 for DPDP consent managers, which does not affect most sellers. The next one that does is 1 January 2027, when the E-Commerce (Amendment) Rules start.

Do the new E-Commerce Rules apply to this year's festive sales? The rules come into force on 1 January 2027, so sales before that date are not covered. Sellers should still start their price logs and data clean-up now.

When do I need to comply with DPDP? The main duties, including notice, security, breach reporting and retention, apply from 13 May 2027. Commentary says penalties cannot be imposed before then, but build earlier.

Is the country-of-origin filter in force? Not as of November 2026, on the latest report we found. It says the filter applies from 1 July 2027. Verify against the gazette.

Which GST dates should I add to my calendar? Ask your accountant for your return schedule; it depends on your registration and filing option. We have not listed GSTR-1 or GSTR-3B dates because we could not confirm them from an official page.

Who is the calendar for? Marketplace sellers, D2C brands and quick-commerce suppliers in India. It will be updated as notifications change; check the date at the top of the page.

Keep the data side ready

Most of the dates above turn on listing data you can fix now: origin, returns, warranty, GSTIN and honest price history. Blooprint is a Bengaluru e-commerce agency that manages catalogues and listings across marketplaces; see our catalogue and listing optimisation service.