Amazon FBA Storage Fees 2026

Q: How are FBA storage fees calculated?

Amazon charges based on the daily average volume (in cubic feet) your inventory occupies. The fee is calculated as: (average daily units × unit volume) × rate per cubic foot. Rates vary by size tier and time of year, with Q4 rates being 2-3x higher than non-peak months.

Q: When does Amazon charge long-term storage fees?

Amazon charges aged inventory surcharges starting at 271 days ($1.50/cu ft) and increasing significantly after 365 days ($6.90/cu ft or $0.15/unit, whichever is greater). These are charged on top of regular monthly storage fees on the 15th of each month.

Q: What IPI score do I need to avoid storage limits?

Amazon's current threshold is 400. Sellers with IPI scores below 400 face storage capacity limits. Scores above 550 are considered strong. The best way to improve IPI is reducing excess inventory and maintaining high sell-through rates. Read our complete IPI guide for optimization strategies.

Q: Is AWD cheaper than FBA storage?

Yes, for bulk storage. AWD rates are approximately 28% lower than FBA non-peak rates and don't surge during Q4. AWD also eliminates aged inventory surcharges. The trade-off is less control over replenishment timing and a preference for pallet-quantity shipments.

Q: How can I reduce storage fees quickly?

The fastest impact comes from three actions: (1) Create removal orders for inventory approaching 271 days, (2) reduce your target DOI from 90 to 45 days, and (3) move bulk stock to AWD or a 3PL. Most sellers see 20-30% storage cost reduction within 60 days of implementing these changes.

Amazon FBA storage fees cost the average seller $2,400 to $18,000 per year. Yet most sellers don't know exactly how these fees are calculated, when they spike, or how to reduce them without cutting inventory levels. If you're storing products in Amazon's warehouses, you're paying for every cubic foot of space, every single day. What we've observed across multi-account rollups: the tactics below are the ones brands keep, the rest get dropped within a quarter.

This guide breaks down every storage fee Amazon charges in 2026: monthly rates by size tier, seasonal surcharges, aged inventory penalties, and the new AWD (Amazon Warehousing and Distribution) cost structure. You'll learn exactly when each fee kicks in, how your IPI score affects your storage limits, and the five strategies sellers use to cut storage costs by 25-40%.

Key Takeaway

FBA storage fees are charged per cubic foot per month, with rates that increase 30%+ during Q4 (Oct-Dec). Long-term surcharges hit after 271 days. The most effective lever is Days of Inventory (DOI): keeping 30-60 days of stock instead of 90+ cuts storage costs dramatically while maintaining sell-through rates.

How Amazon Calculates FBA Storage Fees

Amazon calculates storage fees based on the daily average volume your inventory occupies in fulfillment centers. According to Amazon's official fee schedule, fees are assessed on the 15th of each month for inventory stored during the previous month.

The formula is straightforward: (Average daily units × Unit volume in cubic feet) × Applicable rate per cubic foot. But the "applicable rate" changes based on three factors: product size tier, time of year, and how long inventory has been sitting.

Standard Size (Jan-Sep)

$0.78

Per cubic foot/month

Standard Size (Oct-Dec)

$2.40

Per cubic foot/month

Q4 Rate Increase

+208%

October-December surge

Pro Tip: Q4 Storage Planning

Don't send excess inventory to FBA in September. Q4 rates kick in October 1st. If you're not confident it'll sell by December, store it in a 3PL or AWD facility and transfer in smaller batches. A seller moving 2,000 units of excess stock out before October saves roughly $1,200 in storage fees alone.

2026 FBA Storage Fee Rates: Complete Breakdown

Amazon uses two size tiers for storage fee calculations: Standard-size (items under 20 lbs, fitting within 18" × 14" × 8") and Oversized (everything else). The rates below reflect the 2026 fee schedule published by Amazon Seller Central.

Size Tier	Jan-Sep	Oct-Dec	Q4 Increase
Standard-Size	$0.78 / cu ft	$2.40 / cu ft	+208%
Oversized	$0.56 / cu ft	$1.40 / cu ft	+150%

Real-World Cost Example

Consider a standard-size product that measures 12" × 8" × 4" (0.22 cubic feet per unit). Here's what storing 1,000 units costs across different months:

Scenario	Units	Volume	Monthly Cost
January (non-peak)	1,000	222 cu ft	$173
November (peak)	1,000	222 cu ft	$533
Q4 with 3,000 units	3,000	667 cu ft	$1,600

Did You Know?

According to industry seller surveys, 32% of FBA sellers say storage fees are their biggest unexpected cost. The Q4 rate spike catches first-year sellers off guard because most fee calculators only show non-peak rates.

Aged Inventory Surcharges: The Hidden Fee Killer

Monthly storage fees are just the baseline. Amazon also charges aged inventory surcharges on units sitting in FBA warehouses beyond certain thresholds. These surcharges are assessed on the 15th of each month in addition to regular storage fees.

Inventory Age	Standard-Size	Oversized	Risk Level
0-180 days	No surcharge	No surcharge	Low
181-210 days	No surcharge	No surcharge	Watch
211-270 days	No surcharge	No surcharge	Watch
271-365 days	$1.50 / cu ft	$1.50 / cu ft	High
365+ days	$6.90 / cu ft or $0.15/unit	$6.90 / cu ft or $0.15/unit	Critical

Warning: The 271-Day Cliff

The jump from zero surcharge to $1.50/cu ft at 271 days is sudden. A seller with 500 standard-size units (0.22 cu ft each) that crosses this threshold pays an extra $165/month on top of regular storage fees. That's $1,980/year for inventory that isn't moving. Track your Days of Inventory (DOI) to catch slow movers before they hit aged thresholds.

How to Check Your Aged Inventory

In Seller Central, navigate to Inventory > Inventory Health. This report shows the age distribution of your FBA inventory. Look specifically at the "Estimated Aged Inventory Surcharge" column. Amazon provides a 14-day grace period after the surcharge assessment date to create removal orders.

Most sellers check this report monthly. That's too late. If you're running more than 200 SKUs, you need automated monitoring. Nova's FBA Inventory module Color-codes every SKU by DOI threshold so you can spot at-risk inventory before surcharges hit.

IPI Score: How It Affects Your Storage Costs

Your Inventory Performance Index (IPI) score Directly impacts how much you can store and what you pay. Amazon calculates IPI on a rolling basis, scoring sellers from 0 to 1,000. Falling below the threshold (currently 400) triggers capacity limits that can cripple your restock ability.

Strong IPI

550+

No storage limits applied

At Risk

400-549

Watch list, possible limits

Below Threshold

<400

Storage limits enforced

IPI is influenced by four factors: excess inventory percentage, sell-through rate, stranded inventory, and in-stock rate. The first two carry the most weight. If you're holding 90+ days of stock for slow-moving ASINs, your IPI drops. If you frequently stock out on best sellers, it also drops.

For a deeper dive into IPI optimization strategies, including the specific levers that move your score fastest, read our complete IPI score guide.

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AWD vs. FBA Storage: 2026 Cost Comparison

Amazon Warehousing and Distribution (AWD) launched as Amazon's upstream storage solution. It stores bulk inventory at lower rates and automatically replenishes your FBA stock. For sellers with high-volume, predictable demand, AWD can cut storage costs significantly.

Factor	FBA Storage	AWD
Non-Peak Rate	$0.78 / cu ft	$0.56 / cu ft
Peak Rate (Q4)	$2.40 / cu ft	$0.56 / cu ft (no surge)
Long-Term Surcharges	Yes, after 271 days	No surcharges
Auto-Replenishment	Manual shipments	Automatic to FBA
Minimum Quantity	No minimum	Full pallets preferred
Best For	Fast-moving, low-volume	High-volume, predictable demand

AWD Savings Example

A home goods seller storing 5,000 standard-size units (0.3 cu ft each) through Q4 saved $2,760 by moving 3,000 units to AWD. FBA cost for those units during Oct-Dec: $3,600. AWD cost for the same period: $840. The trade-off? Slightly longer replenishment lead times (2-5 days) and less control over when units arrive at FBA centers.

AWD makes sense when your inventory turnover is predictable and you're shipping pallet quantities. It doesn't make sense for new products where demand is uncertain, low-volume SKUs, or items that need frequent relabeling. For most sellers doing $50K+/month, a hybrid strategy works best: keep 30-45 days of fast movers in FBA, bulk stock in AWD.

5 Strategies to Reduce FBA Storage Fees by 25-40%

Storage fee reduction isn't about sending less inventory to FBA. It's about sending the right amount at the right time. Here are the strategies that consistently deliver the biggest savings.

1. Target 30-60 Days of Inventory (DOI)

The single most impactful change you can make is reducing your average DOI from 90+ days to 30-60 days. This requires accurate demand forecasting and shorter replenishment cycles, but the storage savings compound every month.

Days of Inventory (DOI) is calculated as: (Current FBA units ÷ Average daily sales) = Days of supply. Nova's inventory module color-codes DOI by ASIN so you can immediately spot which products are overstocked (red, 60+ days) vs. At risk (amber, under 14 days).

Pro Tip: The 45-Day Sweet Spot

According to eComEngine's inventory research, sellers maintaining 45-day DOI achieve the best balance between storage costs and stockout risk. Below 30 days, stockout frequency increases by 40%. Above 60 days, storage costs rise without meaningful stockout protection.

2. Create Removal Orders Before the 271-Day Mark

Set calendar reminders at 200 days for every slow-moving ASIN. At that point, you have 71 days to either run a promotion, adjust pricing, or create a removal order. Removal fees ($1.04-$1.53 per unit) are almost always cheaper than paying aged surcharges for months.

3. Optimize Product Packaging Dimensions

Storage fees are based on cubic feet. Reducing your product packaging by even 1 inch in each dimension can save 10-20% on storage costs across your entire catalog. Amazon measures dimensions based on the fully packaged unit, including poly bags and prep materials. Audit your top 20 ASINs for packaging efficiency.

4. Use Multi-Channel Fulfillment (MCF) to Clear Aged Stock

Instead of creating removal orders for slow-moving inventory, sell it through other channels using Amazon's Multi-Channel Fulfillment. List aged FBA inventory on eBay, Walmart, or your own Shopify store at a discount. You clear the stock, avoid surcharges, and recover some margin instead of paying disposal fees.

5. Shift Bulk Storage to AWD or 3PL Facilities

Keep a 30-45 day supply in FBA for fast fulfillment. Store the rest in AWD or a third-party logistics (3PL) provider where monthly rates run $0.20-$0.45 per cubic foot. Replenish FBA weekly based on sell-through velocity. This hybrid approach is standard for sellers doing $100K+/month.

How Nova Helps

Nova's FBA inventory tracker shows DOI, demand velocity, and pipeline projections for every ASIN. Color-coded indicators flag units approaching aged surcharge thresholds so you can act before fees hit. Pair it with the full Amazon inventory management software View to see storage fees and aging inventory inside real-time P&L tracking.

Q4 Storage Fee Survival Guide

October through December is when storage fees hurt most. Rates jump 208% for standard-size items. If you're also stocking up for holiday demand, you're hit with both higher rates and higher volume. Here's the Q4 playbook:

Before October 1st

Clear slow movers: Remove or liquidate anything with 180+ days age
Right-size FBA: Move excess to AWD or 3PL by September 15th
Audit dimensions: Check your top 50 SKUs for packaging optimization
Set restock cadence: Switch to weekly replenishment for Q4

During Q4

Monitor daily: Check sell-through rates against stock levels
Run promotions early: Don't wait until December for slow movers
Track DOI: Target 21-30 days during peak (not 45)
Plan January: Create removal orders for post-holiday excess by Dec 26th

The biggest Q4 storage mistake? Sending 90 days of inventory in October for a product that only sells 20 units/day. That's 1,800 units occupying space at $2.40/cu ft when you only needed 600 units (30-day supply). Use your weekly business review to track inventory velocity and adjust restock volumes through the holiday season.

Storage Fees vs. Other FBA Costs: Putting It in Perspective

Storage fees typically represent 3-8% of total FBA costs for well-managed accounts. But for sellers with slow-moving inventory or poor IPI scores, they can balloon to 15-20%. Here's how they compare:

Referral Fees

8-15%

Largest FBA cost component

Fulfillment Fees

$3-$8

Per unit shipped

Storage Fees

3-8%

Of total FBA costs (managed)

While storage fees aren't the largest line item, they're the most controllable. Referral fees are fixed by category. Fulfillment fees are set by Amazon based on size and weight. But storage fees depend entirely on how much inventory you hold and for how long. That's why tracking DOI and IPI score is so critical to your profit margins.

For a full breakdown of every FBA fee and how they impact your bottom line, see our 2026 FBA fee changes guide and use our interactive storage fees calculator to model your specific costs.

Frequently Asked Questions