Flipkart has confirmed Big Billion Days starts September 23, 2026, with early access for Plus/Black members a day earlier. Amazon’s festive sale typically follows about ten days after, and this year that puts it in the first week of October. That’s less than five weeks away. If you sell on these marketplaces, the prep work you do in the next 30 days will decide whether this festive season is your best quarter or a stockout-and-refund headache. Here’s what actually needs fixing before the traffic hits.
1. Stop guessing on inventory — run the numbers
Most Indian sellers still set festive stock levels by gut feel: “last year we sold 200, so let’s stock 400.” That leaves you either sitting on dead stock in November or losing your Buy Box the moment you go out of stock mid-sale, which also tanks your account health metrics. Run an ABC analysis on your SKUs first, then size safety stock for your top movers at 1.5–2.5x normal levels rather than applying a flat multiplier across your whole catalog.
Do this: Pull your last two festive seasons’ hourly sales data (not daily — hourly, because Big Billion Days spikes are front-loaded in the first 6 hours) and identify your top 20% of SKUs by revenue. Stock those aggressively; leave everything else at normal levels. If you don’t have two years of data, talk to your supplier about a 60-day-out reorder point now, not in September.
2. Reprice around Amazon’s new fee structure — don’t sell at old margins
Amazon India restructured seller fees earlier this year: referral fees dropped to zero on products up to ₹1,000 across 1,800+ categories, and closing fees on sub-₹300 items fell from ₹45 to ₹20. A lot of sellers we talk to are still pricing off the old fee sheet, which means they’re either underpricing (leaving margin on the table) or overpricing (losing the Buy Box to someone who did the math). This is the single fastest margin fix available to you right now, and it costs nothing to implement.
Do this: Recalculate contribution margin for every SKU under ₹1,000 using the current fee schedule before you set your festive-sale discount depth. A product that couldn’t absorb a 30% discount under the old fees might comfortably support 40% now — which matters when you’re competing for placement on discount-sorted search.
3. Fix listings while traffic is still low
Once the sale starts, every listing edit competes with order volume for your attention, and Flipkart/Amazon both slow down catalog approval during peak periods. Titles missing high-intent keywords, thin bullet points, and low-resolution hero images are the difference between a scroll-past and a click when 10x the normal number of shoppers are comparing options in a single search results page.
Do this: Audit your top 30 SKUs this week — not your whole catalog, your top 30 by revenue. Rewrite titles to lead with the search term buyers actually type (check Amazon’s search term report or Flipkart’s keyword suggestions), add at least one lifestyle image alongside the white-background shot, and use bulk upload tools to push changes now while approval queues are still fast.
4. Plan for returns like they’re guaranteed — because they are
Festive sale return rates on fashion and lifestyle categories commonly run as high as 15%, well above normal. Sellers who only plan for the sale and not the two weeks after get blindsided by reverse logistics costs and cash flow gaps just when they need working capital to restock. Return-to-origin (RTO) rates are also higher during high-volume periods because of address errors and impulse cancellations.
Do this: Set aside a returns-handling budget line now (percentage of expected sale revenue, not an afterthought), and if you self-ship, pre-negotiate reverse pickup SLAs with your courier partner before the volume hits — not while you’re drowning in return requests in week two of October.
5. Don’t let the marketplace own your customer — pull them to your own channels
Marketplace sales are transactional by design: you rarely get the buyer’s email, and Amazon/Flipkart control the relationship going forward. Festive season is when you acquire the most new customers all year, which makes it the highest-leverage moment to also build a channel you actually own — WhatsApp, your D2C site, or an SMS list — so next year’s repeat purchase doesn’t have to go through the marketplace’s fee structure at all.
Do this: Insert a QR code or inline card in your packaging that offers a small incentive (10% off next order, early access to your next drop) for scanning through to your own WhatsApp catalog or website. Even a 5–8% opt-in rate on festive-season order volume builds a meaningful owned list by Diwali.
Bottom line
The sellers who win Big Billion Days and the Great Indian Festival aren’t the ones with the deepest discounts — they’re the ones who did the unglamorous prep in the four weeks before: correct inventory math, updated fee-aware pricing, clean top-SKU listings, a returns plan, and a way to keep the customer after the sale ends. Start with your top 20–30 SKUs this week; you don’t need your whole catalog perfect, you need your revenue drivers bulletproof.
Need help with this? Get in touch with Techqueto — we build and grow websites for 100+ brands across India and the UAE.