The Ultimate Guide to Preparing for Amazon Prime Day October 2025

TL;DR

A comprehensive strategy guide for brands and sellers to maximize their success during Amazon Prime Day October 2025. Learn how to prepare inventory, optimize listings, and create winning advertising campaigns.

> The short answer: Amazon Prime Day in 2026 is won by brands that prepare 12 weeks ahead. Lock inventory and Best Deal/Lightning Deal applications by week 12, ship new A+ content and creative by week 9, run a soft Lightning Deal warm-up by week 6, increase Sponsored Brands and Sponsored Display budgets 30-60% by week 3, then defend hourly during the event. Total event budget for a

00K target revenue is typically 0K-
5K. The single most expensive failure mode is a stockout at hour 18 of Day 1.

Key takeaways

  • 12-week timeline is the working standard: inventory and deal applications at T-12, creative at T-9, warm-up at T-6, budget ramp at T-3
  • Increase Sponsored Brands and Sponsored Display budgets 30-60% in the final weeks before Prime Day, and 3-5x typical weekly spend during the event itself
  • Plan for ROAS 1.5x-2x normal during Prime Day; the lift comes from conversion rate, not lower CPCs
  • Stockouts at hour 18 of Day 1 are the single most expensive failure mode; loss of organic ranking post-event compounds for weeks
  • Customer service should be staffed for 1.5x-2x normal volume during the event week

How Amazon Prime Day actually works in 2026

Prime Day in 2026 typically runs as a 48-hour event in July, with a separate Prime Big Deal Days event in October (the second Prime Day Amazon introduced in 2022). Both follow similar mechanics:

  • Best Deals (formerly "Lightning Deals" expanded format): time-limited discounts with Amazon-curated visibility
  • Coupons (digital coupon promotions stacking on top of Best Deals)
  • Prime Exclusive Discounts (PEDs): seller-controlled discounts only visible to Prime members
  • Sponsored Brands and Sponsored Display budget increases for the event week
  • DSP retargeting (for sellers with active DSP) targeting recent Amazon visitors

The 12-week timeline

Weeks 12-10 (planning)

  • Finalise the deal mix and discount levels (typical 15-30% off across the catalogue)
  • Lock in inventory order with destination warehouses
  • Submit Best Deal applications (Amazon's review historically takes 21-30 calendar days)
  • Audit Brand Store and A+ content for refresh needs
  • Begin keyword harvesting in Helium 10 or Jungle Scout
  • Finalise off-Amazon traffic plan (email via Klaviyo, paid social via Meta and TikTok, influencer seeding)

Weeks 9-7 (production)

  • New A+ content and Brand Store creative shipped
  • Hero product video produced (Sponsored Brands video performs disproportionately well during high-traffic events)
  • Email creative for the lead-up sequence drafted
  • Paid social creative for off-Amazon traffic drafted
  • Influencer seeding for July product mentions (typically 10-25 mid-tier creators via GRIN, Aspire, or Korean equivalents)

Weeks 6-4 (lead generation)

  • Send first lead-up email to existing Klaviyo list
  • Begin retargeting campaigns to recent site visitors
  • Run a soft Lightning Deal week to clear inventory and gather review velocity (this also helps search ranking going into the event)
  • Audit listings for any compliance issues (Amazon's pre-event listing reviews tighten in the 4 weeks before Prime Day)

Weeks 3-1 (final preparation)

  • Increase Sponsored Brands and Sponsored Display budgets by 30-60%
  • Lock in Amazon DSP retargeting if applicable
  • Final inventory check and FBA inbound monitoring
  • Send the second and third lead-up emails
  • Verify Amazon Attribution tags on all off-Amazon traffic sources

Prime Day itself

  • Hourly check-ins on inventory, ad spend pacing, and conversion rate
  • Be ready to raise bids on top-converting search terms by 25-50% during peak hours
  • Keep customer service staffed for 50%+ higher volume than typical
  • Use ASIN-level bid adjustments to defend bestsellers from competitor poaching

Post-Prime Day (week 1 after)

  • Run a "Prime Day extension" sale on your DTC site for shoppers who missed Amazon
  • Launch a thank-you email flow with cross-sell recommendations
  • Capture review momentum with structured review request emails (Yotpo or Okendo on the DTC side; Amazon's Request a Review button or Vine for Amazon-side)

Budget allocation

For a brand with

00K in target Prime Day revenue, a rough budget framework:

  • Amazon advertising during Prime Day week: $8,000-
    5,000 (3-5x typical weekly spend)
  • Off-Amazon paid social driving to deals: $5,000-
    0,000
  • Email production and sending: ,000-$4,000 (Klaviyo cost typically minor)
  • Creative and content refresh: $4,000-$8,000 (one-time)
  • Total event budget: 0,000-
5,000 to drive
00K in revenue

ROAS during Prime Day tends to run 1.5x-2x normal levels because of conversion-rate lift, not lower CPCs. Plan budgets and bid increases assuming this conversion-rate dynamic.

Common Prime Day mistakes

  • Cutting prices below your typical promotional discount, sacrificing margin without lifting volume meaningfully
  • Forgetting to add Sponsored Brands video creative for the event
  • Not refreshing A+ content for the deal week
  • Underestimating inventory; running out at hour 18 of Day 1 is the most expensive mistake possible (loss of sales is bad; loss of organic ranking post-event is worse)
  • Not capturing email signups during the event for retargeting

Korean brand notes for Amazon Prime Day US

If you are a Korean brand selling on Amazon US during Prime Day:

  • Inventory transit timelines tighten in June and July; ship 4 weeks earlier than you would domestically. Major freight forwarders for Korea-US lanes: Flexport, Freightos, Yusen Logistics
  • Customs delays into FBA happen; have a backup shipment ready
  • Customer service hours need to align with US time zones during the event (covered by 24/7 services like SupportNinja, Vserv, or in-house with US contractors)
  • Plan for a return rate 1.5x-2x normal, especially in beauty and apparel; localise the return process via your 3PL or Amazon FBA returns

Tools the industry uses for Prime Day prep

  • Helium 10, Jungle Scout: keyword research, inventory forecasting
  • Pacvue, Perpetua, Skai: ad management with event-mode automation
  • Klaviyo, Attentive, Postscript: email/SMS lead-up sequences
  • GRIN, Aspire: influencer seeding
  • Amazon Attribution: cross-channel measurement (free, underused)
  • Sellerboard, ShopKeeper: profit and inventory tracking

Frequently asked questions

How early should I start preparing for Prime Day?

12 weeks out is the working standard. Inventory orders, Best Deal applications, and A+ content refreshes all need at least 8-12 weeks lead time. Brands that start prep 4-6 weeks out almost always under-stock or over-discount.

What is the typical ROAS lift during Prime Day?

1.5x-2x normal levels. The lift comes from elevated conversion rates (Prime members buying ready), not from lower CPCs. Plan budgets and bid increases assuming this conversion-rate lift.

Should I increase ad budgets for Prime Day?

Yes. Sponsored Brands and Sponsored Display budgets typically increase 30-60% in the final weeks. During the event itself, Amazon advertising spend often runs 3-5x typical weekly spend.

What are the riskiest mistakes during Prime Day?

Stockouts at hour 18 of Day 1 are the single most expensive mistake. Cutting prices below normal promotional levels destroys margin without proportional lift. Forgetting Sponsored Brands creative refresh leaves easy revenue on the table.

What is a Best Deal versus a Lightning Deal?

Amazon consolidated "Lightning Deals" into "Best Deals" for major events starting in 2023. Best Deals run longer (up to 14 days) with Amazon-curated visibility on the deals page. Lightning Deals (4-6 hour windows) still exist but are typically used for off-event promotions.

---

Looking for a Korean marketing partner? Browse the verified directory of Korean marketing agencies, compare agencies side by side, or read about how rankings work.

Related reading: Amazon Prime Day Tactics 2026 · Best Amazon Marketing Agencies · BFCM Ultimate Guide

Sources

  • Amazon Prime Day 2024 official communications and seller documentation
  • Amazon Seller Central Prime Day participation guidelines
  • Internal directory data: 9 K-beauty brands disclosing Prime Day participation results and ad spend benchmarks