One decision shapes your entire Amazon selling operation: who fulfills the order.
FBA hands that responsibility to Amazon — and with it, the Prime badge, logistics scale, and a significant chunk of your margins. FBM keeps fulfillment with you — and with it, control over costs, inventory, and the customer experience.
This guide breaks down the actual 2026 fee structures, a real worked P&L comparison in ₹, and the conditions that tip the decision toward one model or the other — including the hybrid approach most high-volume Indian sellers end up using.
2026 Fee Update: Amazon India revised its FBA fulfillment fee structure in late 2025. Key changes: fulfillment fees increased 4–8% across most weight tiers, and long-term storage surcharges now apply from 181 days (previously 270 days) at the first tier. The fee tables in this guide reflect the 2026 schedule. Always verify against the current Amazon India FBA fee schedule in Seller Central before making inventory commitments.
What is FBA (Fulfillment by Amazon)?
FBA is Amazon’s managed logistics service. You ship inventory in bulk to Amazon’s fulfillment centers (FCs) across India — Bangalore, Mumbai, Delhi NCR, Hyderabad, Chennai, and others. When a customer places an order, Amazon picks, packs, ships, handles customer service, and processes returns.
In exchange, you pay:
- Fulfillment fees — charged per unit shipped, based on weight and size tier
- Storage fees — charged monthly per cubic foot of warehouse space occupied
- Long-term storage surcharges — triggered when units remain unsold beyond 181 days
Prime eligibility is the headline benefit. FBA products automatically carry the Prime badge, qualifying orders for next-day or 2-day delivery. Prime buyers convert at significantly higher rates — in most categories, Prime-eligible listings see 2–3× the conversion of equivalent non-Prime listings.
What FBA does not solve: fee exposure grows as inventory age increases. A fast-moving FBA product is highly profitable. A slow-moving one accumulates storage fees until the holding cost exceeds the potential sale value.
What is FBM (Fulfillment by Merchant)?
FBM means you store your own inventory, pack orders yourself, and arrange shipping — typically through Amazon Easy Ship (AES), which sends Amazon couriers to collect from your address, or through a third-party courier of your choice.
You pay:
- Referral fee — same as FBA, a category-dependent percentage of the selling price
- Shipping cost — courier charges based on weight and destination zone
- Packaging — materials and labor
What FBM solves: no storage fees, no long-term storage surcharges, full control over inventory, and the ability to ship products with dimensions or fragility that Amazon’s FBA inbound requirements would reject.
What FBM does not solve on its own: Prime eligibility. Seller-Fulfilled Prime (SFP) is the only path to the Prime badge without FBA, and Amazon India’s SFP requirements are strict — documented same-day dispatch history, low defect rates, and formal Amazon approval. Most FBM sellers do not qualify initially.
FBA vs FBM: Head-to-Head Comparison
| Feature | FBA | FBM |
|---|---|---|
| Prime badge | Automatic | SFP only (requires approval) |
| Referral fee | Category rate (8–15%) | Same |
| Fulfillment cost | ₹26–140+ per unit (Amazon’s fee) | ₹50–120 (your courier cost) |
| Storage cost | ₹40–90/cu. ft/month | Your own space (no Amazon charge) |
| Long-term storage risk | High (surcharges from 181 days) | None |
| Inventory control | Low (Amazon-managed) | Full |
| Returns handling | Amazon handles | You handle |
| Customer service | Amazon handles | You handle |
| Best for | Fast-moving, standard-sized items | Slow-moving, oversized, or high-margin items |
Real P&L Example: Same Product, Two Models
To make the fee comparison concrete, here is a worked example using a representative product: a 500g branded sports bottle at ₹799, sourced at a ₹380 dealer price.
FBA — fast-moving (sold within 30 days)
| Line item | Amount |
|---|---|
| Selling price | ₹799 |
| Referral fee (10%) | −₹80 |
| FBA fulfillment fee (500g standard) | −₹52 |
| FBA storage (30 days) | −₹8 |
| Inbound shipping to FC | −₹15 |
| Product cost (dealer price) | −₹380 |
| Net margin | ₹264 (33.0%) |
FBA — slow-moving (unsold for 9 months)
| Line item | Amount |
|---|---|
| Selling price | ₹799 |
| Referral fee (10%) | −₹80 |
| FBA fulfillment fee (500g standard) | −₹52 |
| FBA storage (9 months) | −₹72 |
| Long-term storage surcharge (181–270 days) | −₹75 |
| Inbound shipping to FC | −₹15 |
| Product cost (dealer price) | −₹380 |
| Net margin | ₹125 (15.6%) |
FBM — GridRay (Direct Fulfilment)
| Line item | Amount |
|---|---|
| Selling price | ₹799 |
| Referral fee (10%) | −₹80 |
| GridRay shipping (500g) | −₹65 |
| Packaging | −₹12 |
| Product cost (dealer price) | −₹380 |
| Net margin | ₹262 (32.8%) |
The key insight: FBA and FBM deliver nearly identical margins on fast-moving products. The divergence is entirely about inventory age. Once a product stops selling, FBA becomes expensive fast — at 9 months unsold, a product that should earn ₹264 per unit earns ₹125.
FBM has no storage risk. With an on-demand sourcing model you only source inventory when you have orders, removing long-term storage exposure entirely.
Fee figures are approximate and based on the 2026 Amazon India fee schedule. Verify current rates in Seller Central before making inventory decisions.
FBA Fee Breakdown for 2026
Fulfillment Fees by Weight Tier
| Weight tier | Approximate fee range |
|---|---|
| Small standard (≤250g) | ₹26–35 |
| Standard (≤500g) | ₹35–55 |
| Standard (≤1kg) | ₹55–75 |
| Large standard (1–3kg) | ₹75–100 |
| Oversized (3–5kg) | ₹100–140 |
| Heavy/bulky (>5kg) | ₹140+ |
Fees vary by product category and fulfillment location. Use the FBA fee calculator in Seller Central for your specific ASIN before committing to inbound shipments.
Monthly Storage Fees
| Period | Standard size | Oversized |
|---|---|---|
| January–September | ₹40/cu. ft | ₹25/cu. ft |
| October–December (peak) | ₹75/cu. ft | ₹40/cu. ft |
Amazon measures cubic feet based on unit dimensions including packaging. A product that looks small on your listing may occupy more warehouse space than expected depending on how it is packaged for inbound shipment.
Long-Term Storage Surcharges
| Duration in warehouse | Surcharge |
|---|---|
| 181–270 days | ₹75/unit |
| 271–365 days | ₹150/unit |
| 365+ days | ₹500/unit (or mandatory removal) |
These surcharges stack on top of monthly storage fees. A product unsold for 12 months may cost more to store than its original purchase price.
It’s a common enough trap that Amazon’s own seller forums are full of it — storage fees that looked negligible monthly, until a slow-moving batch quietly cost more to store than it was worth.
Monitor your FBA Inventory Age report in Seller Central monthly. Run removal orders for units approaching the 180-day threshold if the product is not turning. Stranded inventory is one of the most common sources of undetected cost for Amazon sellers.
When to Choose FBA
FBA is the right model when:
- Your product turns quickly. High-velocity items absorb FBA fees without accumulating storage costs. If you are selling 30+ units per month per ASIN, FBA is almost always cheaper than managing FBM logistics at scale.
- Prime eligibility drives conversion. In competitive categories — electronics, personal care, sports — the Prime badge directly affects which product a buyer selects when multiple listings are otherwise comparable.
- You are scaling volume. Beyond 50–100 daily orders, FBM logistics (packing, dispatching, returns) consume significant time. FBA removes the fulfillment bottleneck at the cost of a fixed fee per unit.
- Your product is standard-sized and lightweight. The FBA fee schedule favors standard-sized items under 500g. Heavy or bulky products quickly become uneconomical under FBA.
When to Choose FBM
FBM is the better model when:
- Your product is slow-moving or seasonal. If a product sits unsold for months, FBA storage fees erode margin quickly. FBM with an on-demand sourcing model eliminates this risk entirely.
- Your product is oversized or heavy. FBA fees scale sharply with size and weight. A 5kg item at ₹1,500 may leave almost no margin after FBA fees. FBM with a negotiated courier rate is often 40–60% cheaper for heavy products.
- You have special-handling or fragility requirements. FBA inbound rules restrict certain packaging types. Products with specific fragility or temperature sensitivity may be refused or incur special handling charges at the warehouse.
- You want to test a new product. Sending a new ASIN into FBA before validating demand means paying storage fees on units that may not sell. FBM lets you test with 10–20 units before committing to a full FBA inbound shipment.
- You want branded packaging. FBA uses Amazon’s standard packaging. FBM lets you ship in your own branded boxes and inserts — relevant for premium products where the unboxing experience is part of the brand.
The Hybrid Approach
Most Amazon India sellers who operate at scale use a hybrid model: FBA for proven, fast-moving ASINs and FBM for newer, slower, or oversized products.
A practical hybrid framework:
- List new products via FBM — validate demand without committing inventory to an FBA warehouse
- After 60–90 days, if a product is turning at 20+ units/month, migrate it to FBA to capture Prime eligibility and remove the fulfillment workload
- Keep FBM active as a backup listing for FBA ASINs — if FBA stock runs out, the FBM listing keeps the product visible and orderable without losing the Buy Box entirely
- Assess quarterly — remove FBA inventory that is not turning within 120 days to avoid the long-term storage trap
The key variable is sell-through rate. The P&L tables above show how quickly unsold FBA inventory becomes loss-making once storage surcharges apply.
Frequently Asked Questions
Is FBA worth it for low-margin products?
Only if they sell fast. FBA makes economic sense when the Prime badge drives enough additional conversion to offset the fees, and the product clears before long-term storage charges apply. For low-margin products with unpredictable velocity, FBM with on-demand sourcing is lower risk. Use the P&L tables in this guide to model your specific margins before committing inventory to an FBA warehouse.
What is Seller-Fulfilled Prime and how do I qualify?
Seller-Fulfilled Prime (SFP) lets FBM sellers display the Prime badge without using FBA. To qualify on Amazon India, you need a documented track record of same-day dispatch, low late-shipment rates, high customer satisfaction scores, and Amazon’s formal approval. The program is selective and not immediately accessible for most FBM sellers. Until SFP is available, FBM means operating without the Prime badge.
What happens if I run out of FBA stock?
When FBA inventory hits zero, your listing loses Prime eligibility and Buy Box probability drops sharply. The safest mitigation is to maintain a parallel FBM listing — when FBA inventory runs out, the FBM listing stays live and continues taking orders without Prime. Set replenishment alerts in Seller Central and reorder before stock hits zero, factoring in the 5–14 day inbound processing time at Amazon’s FCs.
How does FBA commingling affect counterfeit risk?
FBA commingling pools inventory from multiple sellers who share the same product barcode. If another seller ships counterfeit units of the same ASIN to an Amazon warehouse, a buyer who ordered from your listing may receive the counterfeit unit — and the complaint can land on your account even though you never supplied the fake. Switching to FNSKU labeling (Amazon-barcoded inventory) eliminates this: your units are tracked separately and never pooled with another seller’s stock. See the full breakdown in our guide on Amazon’s counterfeit policy and Transparency program.
Can I use GridRay products with both FBA and FBM?
Yes — with one distinction worth understanding upfront. GridRay is a B2B2C distribution network and authorization platform, not restricted to a specific fulfillment method. For FBM, GridRay’s zero-inventory model applies directly: you forward each order as it comes in and pay dealer price only after the sale. For FBA, the mechanics are different — you buy the stock from GridRay upfront and ship it in bulk to Amazon’s warehouse before any sale happens, since that’s how FBA itself works. That means FBA units trade away the zero-inventory advantage; you’re sourcing ahead of demand rather than after it. Every order, in either model, still comes with a GST-compliant invoice issued by GridRay on behalf of the brand’s Order Processing Center, satisfying Amazon’s documentation requirements.
How GridRay Makes FBM Viable
The main reason FBM struggles for most sellers is inventory. You have to buy stock upfront, store it yourself, and absorb holding costs on units that don’t sell. That’s the problem GridRay’s zero-inventory model solves.
Through GridRay, resellers operate without holding inventory. When a buyer places an order on your Amazon FBM listing, you place the order on GridRay and the brand’s warehouse dispatches it directly — typically the same day for orders placed before 12 noon (best-effort, not guaranteed). GridRay manages the shipping; you pay the shipping cost. The fulfillment chain looks like:
Buyer orders → You place the order on GridRay → Brand warehouse dispatches (GridRay manages shipping) → Buyer receives
For FBM sellers, this eliminates:
- Upfront inventory investment — no capital tied in stock, pay only for products you’ve already sold
- Storage costs — you hold nothing, so there is no storage fee exposure
- Long-term storage risk — no units sitting unsold at your premises or an FBA warehouse
- Authorization gaps — every unit ships from the brand’s own warehouse with a GST-compliant invoice and authorization documentation Amazon’s Seller Performance team accepts
When a reseller applies through GridRay, the brand reviews their profile and application individually. Upon approval, the reseller receives an official authorization letter issued by GridRay on the brand’s behalf — the exact documentation that protects your account if Amazon ever receives a complaint about the products you sold.
If you are running FBM and carrying inventory risk on slow-moving stock, or spending time chasing authorization letters that don’t materialize, explore how GridRay’s authorization model works for Amazon sellers.
If you sell on Amazon FBA and want to understand how FBA commingling creates counterfeit risk — and how FNSKU labeling protects you — read: Amazon Counterfeit Policy: How Sellers Can Avoid Suspension in 2026.
