How Are Amazon FBA Storage Fees Calculated? 2025 Updated Guide
For sellers using Amazon FBA, storage fees are one of the biggest costs that directly impact profit margins. Getting the calculations wrong can seriously eat into your profits — even on lower-volume products.
In this guide, we’ll break down Amazon FBA storage fees, how they’re calculated, and practical ways to keep your costs down.
1. What Are Amazon FBA Storage Fees?
Amazon FBA storage fees are based on how long your products stay in Amazon’s warehouses and how much space they take up.
These fees are generally split into:
- Monthly storage fees
- Long-term storage fees
Product size and weight both play a major role in how much you’ll be charged.
2. How Are Storage Fees Calculated?
Amazon usually calculates storage fees based on cubic metres (m³).
Formula:
Storage Fee = Product Volume × Number of Storage Days × Unit Rate
Example:
- Product volume: 0.01 m³
- Monthly fee: £22/m³
- Storage period: 1 month
Storage cost = 0.01 × 22 = £0.22
3. Long-Term Storage Fees
Amazon applies long-term storage fees to products stored for 365 days or more.
These charges are usually much higher and can become quite costly if stock isn’t moving properly.
4. Factors That Affect Storage Fees
- Product size and weight
- Seasonal demand (especially during October–December)
- Warehouse capacity and fulfilment centre demand
Bulky but lightweight products can end up costing more during peak seasons due to the extra storage space they take up.
5. Ways to Reduce Storage Costs
- Optimise your FBA inventory planning
- Prioritise fast-selling products
- Clear long-term stock using discounted FBA promotions
- Use a 3PL or temporary storage warehouse to balance costs
Using these strategies can help keep your storage costs under control.
Conclusion
Amazon FBA storage fees are a key factor that directly affects your overall profitability.
By properly planning around product volume, storage duration, and seasonal changes, you can minimise unnecessary costs and build a stronger sales strategy.
