FBA aged-inventory surcharges, what they cost the median brand in 2026

$42,800. That’s the median 7-figure Amazon brand’s 2025 bill for aged-inventory surcharges. We pulled the data across 52 accounts in February 2026. 73% of that bill was avoidable. The brands paying it weren’t slow operators, they were operators using a 2022 playbook against a 2026 fee schedule.

The 2026 changes tightened the aged-inventory clock from 271 days down to 181 days for the highest-tier surcharge. Anything sitting in FBA past 6 months now triggers a per-cubic-foot surcharge that escalates monthly. By month 12 in storage, a single oversize unit can owe $4.20/month in aged-inventory fees alone, separate from base storage. On 1,000 stuck units, that’s $50K/year on inventory you’ve already paid for once.

This is the teardown of where the bill comes from, which SKUs absorb it, and what we’re doing for clients to recover the 73%.

The fee schedule, in plain numbers

Amazon publishes the aged-inventory surcharge schedule but presents it across three different help pages with overlapping definitions. Pulled into one place:

181-270 days in storage: $0.50 per cubic foot per month, on top of base storage.

271-365 days: $1.50 per cubic foot per month.

365+ days: $6.90 per cubic foot per month.

For a standard-size unit at 0.4 cubic feet, the monthly aged-inventory fee at the top tier is $2.76 per unit per month. For an oversize unit at 1.5 cubic feet, $10.35 per unit per month. On 500 oversize units sitting at the 365-day mark, that’s $5,175/month. $62,100/year. On dead inventory.

The brands hit hardest in our sample weren’t the ones with the most aged inventory by unit count. They were the ones with aged inventory in the wrong size tier. A brand with 3,000 standard-size units stuck at 200 days paid $3,000/month in surcharges. A brand with 400 oversize units stuck at 380 days paid $4,140/month in surcharges. The size tier matters more than the unit count.

Where the $42,800 actually comes from

We rebuilt the median brand’s bill line by line. Here’s the breakdown:

Tier 1 (181-270 days): $11,400 (27%). This is the early-warning tier. The fees aren’t catastrophic but they signal the brand has 6 months of supply on items they shouldn’t. Most operators let it ride because the dollar number per SKU looks small.

Tier 2 (271-365 days): $15,200 (35%). This tier is where most brands wake up. The fee triples and the line items finally show up on the seller bill in numbers that make a CFO ask questions. By the time a brand is paying tier-2 fees, the underlying inventory is almost always going to be liquidated at a loss anyway.

Tier 3 (365+ days): $16,200 (38%). The catastrophic tier. $6.90/cubic-foot/month. Most brands at this tier have inventory they should have written off 6 months earlier. The fees compound monthly. By the time the brand removes or destroys it, they’ve often paid more in surcharges than the inventory’s wholesale value.

The 73% recoverable number comes from the brands that proactively manage tier 1 and tier 2. The 27% unavoidable portion is tier 1 surcharges on inventory that was always going to take 6-9 months to sell, fashion seasonal, regulated supplements with long lead times, branded co-pack with minimum production runs.

The four sources of avoidable aged-inventory cost

Every brand we audited had at least three of these four problems. Most had all four.

Source 1: stale forecasts driving over-ordering. The reorder quantities were set 18 months ago when the SKU was selling 40 units/day. It’s now selling 22 units/day. Nobody updated the reorder POs. The factory shipped the original quantities. The inventory sits. Median over-order across our sample: 38% on slow-moving SKUs.

Source 2: discontinued SKUs left in FBA. The brand decided to stop carrying a variant 8 months ago. Removed it from the website. Stopped advertising it. But never removed the FBA inventory. It sits, accruing surcharges, until someone notices. We typically find 8-15 such SKUs in any new client’s catalog.

Source 3: failed launches that were never written off. A new product launched 14 months ago. Sold poorly. The brand pivoted to a new variant. The original launch inventory is still in FBA. Tier 3 surcharges accrue. The brand is mentally over the failed launch but the FBA bill isn’t.

Source 4: variations that should have been merged. A parent ASIN with 12 variants where 4 of them sell 90% of the volume. The other 8 sit at 5-15 units/month. Each one above the 181-day threshold. Cumulative tier-1 and tier-2 surcharges on those 8 underperforming variants typically run $400-900/month.

None of these are exotic. All of them require the same fix, quarterly inventory triage with a written disposition for every SKU above 90 days of supply.

The triage workflow we run

Every quarter, on every account, we run the same workflow. Takes 4-6 hours per brand. Recovers 5-10x the cost in surcharge avoidance.

One. Pull the inventory health report. Filter to SKUs with days-of-supply above 90.

Two. For each SKU, classify into one of four buckets:

Continue and accelerate, strategic SKU, sales velocity is the bottleneck. Run promo campaigns, sponsor placement, refreshed creative.

Continue and right-size, strategic SKU but over-supplied. Cut next reorder by 30-50%. Liquidate down to 90 days of supply through Vine, lightning deals, or outlet.

Discontinue with managed liquidation, non-strategic SKU. Liquidate over 60-90 days through deals and bundles. Never reorder.

Discontinue and remove now, already losing money on every additional day in FBA. Pull inventory back, write off, move on.

Three. For each SKU classified as discontinue, calculate breakeven days, the number of days at current sales velocity until accumulated surcharges exceed wholesale value. If breakeven days is under 60, it’s a “remove now.” If 60-180, it’s “managed liquidation.” If above 180, it’s a continue-and-right-size.

Four. Execute. Within 14 days. Most operators do steps 1-3 and never execute step 4 because it requires saying no to the people who originally championed the SKU. That’s why this work usually requires an outside agency, internal teams have political costs to writing off inventory that don’t apply to us.

What recovery actually looks like

For the median brand in our sample, the one paying $42,800/year in surcharges, we recovered $31,200/year through the four-bucket triage. The remaining $11,600 is structural and unavoidable on the current product mix.

That $31,200 isn’t a one-time recovery. It compounds. Every quarter we run the triage, the inventory health stays in spec. The brand stops accumulating tier-2 and tier-3 inventory because the triage catches it at tier 1. Year-2 savings on the same brand: $36,400. Year-3: $39,800. The surcharge schedule is steepening every year, what we’re really buying is insulation from future increases.

The framing we use with brand owners is borrowed from how we think about catalog economics generally, and we covered that broader frame in your Amazon catalog is now a SaaS product. Inventory surcharges are like SaaS storage costs. Every additional day a SKU sits adds operational cost that doesn’t appear in COGS. Treating the catalog like a SaaS product means measuring carrying cost per SKU per day and pruning the bottom decile every quarter.

What’s coming in 2027

We expect the aged-inventory threshold to drop to 151 days in 2027. Possibly 121. Amazon needs the warehouse capacity for AWD and same-day fulfillment. Slow-moving FBA inventory is the obvious target.

If your brand is currently sitting on 200+ days of supply on more than 10% of its catalog, you have 12-18 months to right-size before the next surcharge cliff. The brands that wait until the threshold drops to react will eat 6-9 months of surcharges they couldn’t have anticipated. The brands that get to 90-day supply now will be insulated.

The math here isn’t novel. The execution is. If you want us to run the surcharge audit on your account and produce the four-bucket triage recommendations, we do it as a one-time engagement with a fixed-fee deliverable. Reach out via clearsightnow.com and we’ll quote it inside 48 hours.

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