What is Amazon FBA stranded inventory?
Stranded inventory is FBA stock that Amazon has on hand but cannot actively sell. The most common root causes are:
- Listing data issues: missing or invalid attribute, image, or category.
- Suppressed ASIN: policy violation, IP complaint, or restricted product.
- Variation / parent-child mismatch: child ASIN not linked to a parent, or new variation theme applied.
- Compliance / safety review: product flagged for hazmat, lithium battery, or authenticity check.
Stranded units still incur monthly storage fees and aged-inventory surcharges, so the cost compounds the longer the listing stays unresolved. The Calculator surfaces the cost components so you can size the urgency and pick the right action.
How to use this calculator
- Pull the Inventory › Stranded Inventory report and enter your stranded units.
- Enter your selling price, COGS, and (optionally) net margin.
- Enter your daily sales velocity before stranded and the days stranded. Velocity is the units you would have sold if the listing were active.
- Enter the inventory age and cubic feet per unit. The Calculator projects the aged-inventory surcharge using the 2026 US FBA schedule.
- Enter the monthly storage rate and the removal / disposal fee.
- Indicate whether ads are still running and the daily spend. The Calculator adds wasted ad spend to the exposure.
- Read the tied-up capital, lost revenue, lost profit, storage cost, aged surcharge, and the suggested action.
Cost components the calculator estimates
- Tied-up capital: units × COGS. The cash you cannot redeploy.
- Lost revenue (projected): velocity × days stranded × selling price, capped at the unit count so the estimate cannot exceed available inventory.
- Lost gross profit (projected): velocity × days stranded × (selling price × net margin).
- Storage cost while stranded: units × cubic feet × (storage rate ÷ 30) × days stranded.
- Aged-inventory surcharge risk: units × cubic feet × per-cubic-foot rate for the active 2026 tier (or max of per-cubic-foot and per-unit minimum for 366+ day bands).
- Wasted ad spend: daily ad spend × days stranded, if ads are still running.
How the suggested action is chosen
The Calculator compares the projected aged-inventory surcharge and storage cost against the removal / disposal fee. If the next 30 days of carrying cost is greater than the removal fee, the suggested action shifts toward Remove or dispose. If the inventory age is below 180 days and the velocity is high, the suggested action is Fix the listing. The decision is a planning signal — the actual action depends on the root cause and your fix path.
What is included in the estimate
- Tied-up capital, lost revenue, lost gross profit, storage cost, and aged-inventory surcharge.
- Removal / disposal breakeven comparison.
- Suggested action with a one-line reason.
- Wasted ad spend if ads are still running.
What is not included
- ASIN-level sales exposure from a suppressed listing. Use the Suppressed Listing Loss Calculator for that.
- Lost Buy Box percentage or organic ranking decay. These are tied to days of inactivity but cannot be sized without search-term data.
- Reimbursement for damage or loss that occurred after the listing became stranded. The Calculator assumes inventory is intact and not yet aged-out of the standard claim window.
- Liquidation channel fees if you choose Amazon's Liquidation program (typically a 5–15% referral fee on the recovered value, in addition to the standard removal fee).
Example scenario: 300 units, 30 days stranded, 120 days in FBA
Example scenario, not a customer case study. A seller has 300 units of a $30 / $9-COGS / 22%-margin SKU stranded for 30 days. Pre-strand velocity is 3 units / day. Inventory age is 120 days (no aged surcharge yet). Storage is standard season. Ads are paused.
Tied-up capital: 300 × $9 = $2,700
Lost revenue (projected): 3 × 30 × $30 = $2,700 (capped at 300 units × $30 = $9,000)
Lost gross profit (projected): 3 × 30 × ($30 × 0.22) = $594
Storage cost while stranded: 300 × 0.0926 × ($0.78 ÷ 30) × 30 = $21.66
Aged surcharge (projected): Inventory age is 120 days — 0–180 tier, no surcharge yet. $0
Wasted ad spend: $0 (ads paused)
Total estimated exposure so far: $594 + $21.66 = $615.66
Suggested action: Fix the listing. Velocity is positive, age is well under 180 days, and storage cost is small. A quick data fix is higher-leverage than removal.
Frequently Asked Questions
What is Amazon FBA stranded inventory?
Stranded inventory is FBA stock that Amazon has on hand but cannot actively sell because the listing is incomplete, suppressed, or has a data issue. The Inventory › Stranded Inventory report lists ASINs and quantities.
How much does stranded inventory cost per day?
The daily cost has three components: tied-up capital (opportunity cost on the COGS), lost gross profit (units you cannot sell each day at the contribution margin), and storage cost while stranded (cubic feet × daily storage rate).
Should I fix the listing, run a discount, or remove the inventory?
It depends on the root cause, the days stranded, the aged-inventory surcharge risk, and the expected fix time. If the cause is a quick data fix, fix the listing. If the cause is structural, removal or disposal may be cheaper than waiting for aged-inventory surcharges to land.
What is the difference between stranded and suppressed inventory?
Stranded inventory refers to units Amazon has on hand but cannot actively sell. Suppressed listings refer to ASINs that are blocked from showing in search. The two often overlap — a suppressed ASIN will have stranded units — but the action paths differ.
Does this calculator guarantee recovery?
No. This is a planning estimator that converts your inputs into tied-up capital, lost revenue, lost gross profit, storage cost, and aged-inventory surcharge risk. Actual recovery depends on whether the listing can be fixed, the time to fix, and your decision to discount, remove, or dispose of the units.
What if I cannot fix the listing?
Open a removal order or a disposal order in Seller Central. Removal sends the units back to you (you pay the removal fee plus return shipping). Disposal lets Amazon destroy the units (lower per-unit fee). The Calculator's breakeven output compares the next 30 days of carrying cost to the removal fee.