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amz-removal-vs-storage-calculator

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Removal vs Storage Calculator

移除vs仓储计算器

Aging FBA inventory bleeds money two ways: base monthly storage and the aged-inventory surcharge that stacks on top once the units get old. The question is whether to keep, liquidate, remove, or dispose. The answer depends on the per-SKU math, not gut feel. This skill runs that math.
老化的FBA库存会从两方面消耗资金：基础月度仓储费，以及库存老化后叠加收取的月度老化库存附加费。核心问题是选择保留、清算、移除还是处置库存，答案取决于每个SKU的精准计算，而非直觉判断。本工具可完成这项计算。

When to use this

适用场景

  • Units approaching or past the aged-inventory surcharge thresholds (it begins around 181 days and gets steeper at 271+ and 365+ days).
  • A slow mover that is not turning and is costing storage.
  • Q4 prep where storage rates jump and aged stock costs more.
  • April 2025 auto-removal rules in effect and the seller needs to decide.
  • 库存即将达到或已超过老化库存附加费阈值（通常从181天开始，271天以上及365天以上的费率会大幅提升）。
  • 滞销且持续产生仓储成本的库存。
  • Q4备货期，仓储费率上涨导致老化库存成本更高时。
  • 2025年4月自动移除规则生效后，卖家需要做出决策时。

The framework. The Four Decisions

决策框架：四种选择

For each aging SKU, compute the dollar outcome of four options.
OptionMathBest when
Keep and sell at full price(price - fees - cost) x expected units sold - storage over horizonVelocity supports sell-through before aged-inventory surcharges stack up
Liquidate (deep discount)(sale price - fees - cost) x units - storage to clearance dateSellable with a discount, recovers more than removal
Remove (back to seller or 3PL)(resale or new sale price - removal fee - shipping) - storage to removalBrand-controlled value off-Amazon, or relist later
Dispose (Amazon destroys)-(disposal fee + lost cost)No resale value and storage cost exceeds disposal fee
The decision: the option with the highest dollar outcome (least negative) wins. for many slow movers, dispose actually beats keep when factored over months.
针对每个老化SKU，计算四种选项的收益情况。
选项计算方式最优适用场景
保留并按原价销售(售价 - 费用 - 成本) × 预计销量 - 持有周期内的仓储费库存周转速度足够快，能在老化库存附加费叠加前售罄
清算（深度折扣）(清仓价 - 费用 - 成本) × 库存数量 - 清仓期内的仓储费库存仍可销售，折扣后回收的价值高于移除成本
移除（退回卖家或第三方仓储）(转售或新售价 - 移除费 - 运费) - 移除前的仓储费品牌可在亚马逊外掌控库存价值，或后续重新上架销售
处置（由亚马逊销毁）-(处置费 + 损失的成本)库存无转售价值，且仓储成本超过处置费
决策原则：选择收益最高（亏损最少）的选项。对于许多滞销品，若按数月周期计算，处置实际上比保留更划算。

The aged-inventory surcharge (what makes old stock expensive)

老化库存附加费（导致旧库存成本高的原因）

The old "long-term storage fee at 180+ and 365 days" two-tier model is outdated. Since 2024 Amazon charges a monthly aged-inventory surcharge on a tiered scale that stacks on top of the base monthly storage rate. The surcharge begins around 181 days and steps up as the inventory ages, with steeper bands at 271+ days and again at 365+ days, charged every month the units sit. Because it is monthly and rises with age, the cost of keeping a slow mover compounds fast. check the current surcharge tiers in the Seller Central fee schedule before quoting a number, and project the surcharge month by month across the realistic time-to-sell horizon, not as a single one-time charge.
旧的“180天及365天以上的长期仓储费”双阶梯模式已过时。自2024年起，亚马逊采用分层月度老化库存附加费模式，叠加在基础月度仓储费之上。附加费从约181天开始收取，随着库存老化逐步提高，271天以上及365天以上的费率会大幅提升，且库存每存放一个月就会收取一次。由于是按月收取且费率随时间上涨，滞销品的持有成本会快速累积。在计算前，请查看卖家中心（Seller Central）的费用明细表确认当前附加费层级，并按月度预估整个合理销售周期内的附加费，而非按单次费用计算。

Step by step

操作步骤

  1. Collect inputs per SKU. Units on hand, age, unit cost (landed), current selling price, recent units-per-month rate, monthly storage rate, and removal / disposal fee.
  2. Project the holding cost. Base monthly storage over the realistic time-to-sell horizon, plus the monthly aged-inventory surcharge for every month the units sit in a surcharge tier. check current surcharge tiers in the fee schedule.
  3. Compute each option. Plug into the four formulas.
  4. Pick the winner. Highest dollar outcome.
  5. Sequence the action. Submit removal or disposal orders before the units cross into the next aged-inventory surcharge tier. plan liquidation campaigns with 
    amz-coupon-strategy
    or 
    amz-deal-finder
    .
  6. Apply across the aged catalog. Run the calc on every SKU in the at-risk bucket. the decisions usually split: a few worth liquidating, several to remove, some to dispose.
  7. Run the quality check, then deliver.
  1. 收集每个SKU的输入数据：现有库存数量、库存时长、单位落地成本、当前售价、近期月销量、月度仓储费率、移除/处置费。
  2. 预估持有成本：合理销售周期内的基础月度仓储费，加上库存处于附加费层级期间的每月老化库存附加费。请在费用明细表中确认当前附加费层级。
  3. 计算各选项收益：代入上述四个公式进行计算。
  4. 选择最优选项：收益最高的选项即为最优解。
  5. 执行行动规划：在库存进入下一个老化库存附加费层级前提交移除或处置订单。可结合
    amz-coupon-strategy
    或
    amz-deal-finder
    策划清仓活动。
  6. 覆盖所有风险库存：对所有高风险SKU进行计算。决策结果通常会分为：少数值得清算、部分需要移除、一些直接处置。
  7. 进行质量检查后执行。

Output format

输出格式

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Removal vs Storage Decision. [SKU]

移除vs仓储决策. [SKU]

Units: [N] Age: [days] Unit cost: [$] Price: [$] Storage rate: [$/cubic ft]
库存数量: [N] 库存时长: [days] 单位成本: [$] 售价: [$] 仓储费率: [$/立方英尺]

Option outcomes (per unit)

各选项单位收益

Keep and sell: [$] Liquidate: [$] Remove: [$] Dispose: [$]
保留并销售: [$] 清算: [$] 移除: [$] 处置: [$]

Recommendation: [option]

推荐方案: [选项]

[reasoning + dollar comparison]
[理由 + 收益对比]

Action

行动建议

[file removal order / set liquidation deal / dispose / hold] By: [date before units cross into the next aged-inventory surcharge tier]
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[提交移除订单 / 设置清仓活动 / 处置库存 / 保留库存] 截止日期: [库存进入下一个老化库存附加费层级前的日期]
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Worked example

示例计算

200 units of a SKU at 8 USD landed cost, age 240 days, selling 4 a month, current price 22 USD. Standard size, unit volume 0.5 cu ft. Use a realistic 2026 standard-size off-peak base storage rate of about 0.78 per cubic foot per month (use your current per-cu-ft rate from the fee schedule). At 240 days the SKU is already in an aged- inventory surcharge tier, and at this velocity it will climb into the steeper 271+ and 365+ bands while it sits.
  • Keep and sell at full price: 200 / 4 = 50 months to clear. Base storage alone over 50 months = 200 x 0.5 x 0.78 x 50 = 3,900 USD, before the monthly aged-inventory surcharge stacks on top and steepens with age. Margin per unit ~9 USD x 200 = 1,800. Net deeply negative once storage plus surcharge run the full horizon. keeping is a trap here.
  • Liquidate at 14 USD via coupon: cleared in ~3 months. Margin ~2 USD x 200 = 400. Storage over 3 months ~234, plus a few months of surcharge. Net roughly breakeven to modestly positive, and the cash and IPI are freed fast.
  • Remove and relist on a 3PL: removal fee ~1.10 x 200 = 220 (verify current removal rate). resale value uncertain. Net depends on the off-Amazon channel, but it stops the surcharge clock immediately.
  • Dispose: disposal fee ~0.30 x 200 = 60 + lost cost 1,600 = -1,660 (verify current disposal rate).
Liquidate clearly beats Keep once the real base rate and the stacking surcharge are in the math, and it is far better on cash and IPI. file a coupon for the next 90 days, and do it before the units cross into the next surcharge tier.
某SKU库存200件，落地成本8美元，库存时长240天，月销量4件，当前售价22美元。标准尺寸，单位体积0.5立方英尺。采用2026年非旺季标准尺寸基础仓储费率约0.78美元/立方英尺/月（请以费用明细表中的当前费率为准）。该SKU已处于老化库存附加费层级，按现有周转速度，库存会在存放期间进入费率更高的271天以上及365天以上层级。
  • 保留并按原价销售：200/4=50个月售罄。仅基础仓储费50个月总计=200×0.5×0.78×50=3900美元，尚未计入月度老化库存附加费及其随时间上涨的部分。单位利润约9美元×200=1800美元。综合仓储费和附加费后，最终收益为深度亏损，保留库存是陷阱。
  • 通过优惠券以14美元清算：约3个月售罄。单位利润约2美元×200=400美元。3个月仓储费约234美元，加上几个月的附加费。最终收益大致盈亏平衡或小幅盈利，且能快速回笼资金并提升IPI分数。
  • 移除至第三方仓储（3PL）并重新上架：移除费约1.10美元×200=220美元（请确认当前移除费率）。转售价值不确定。最终收益取决于亚马逊外的销售渠道，但可立即停止附加费的累积。
  • 处置库存：处置费约0.30美元×200=60美元 + 损失的成本1600美元= -1660美元（请确认当前处置费率）。
综合基础费率和叠加附加费后，清算明显优于保留，且在资金回笼和IPI分数方面更具优势。请在库存进入下一个附加费层级前，设置为期90天的优惠券活动。

Quality check

质量检查要点

  • All four options are computed, not just two.
  • The monthly aged-inventory surcharge is projected month by month across the horizon and stacked on top of base storage, with tiers marked for verification.
  • Time-to-sell uses the realistic recent rate, not the launch rate.
  • The chosen action is tied to a specific date before the next surcharge tier.
  • The decision applies across the at-risk catalog, not one SKU in isolation.
  • 需计算全部四个选项，而非仅两个。
  • 需按月度预估整个周期内的老化库存附加费，并叠加基础仓储费，标记层级以便验证。
  • 销售周期采用近期实际周转速度，而非初始销售速度。
  • 选定的行动需绑定库存进入下一个附加费层级前的具体日期。
  • 决策需覆盖所有高风险库存，而非单个SKU。

Common mistakes

常见误区

  • Hoping it sells. Holding aged stock at full price while storage fees compound.
  • Removing without checking liquidate. Removal is sometimes worse than a deep Amazon discount.
  • Disposing too early. Disposal is right when no other option recovers cost. often a brand-controlled remove-and-relist is better.
  • Missing the next surcharge tier date. Acting after the aged-inventory surcharge steps up instead of before, and treating it as a one-time fee instead of a monthly charge that compounds with age.
  • 寄希望于自然销售：按原价持有老化库存，任由仓储费不断累积。
  • 未对比清算就选择移除：有时移除成本高于亚马逊深度折扣的清算成本。
  • 过早处置库存：只有当其他选项都无法回收成本时，处置才是正确选择。通常品牌自行移除并重新上架会更划算。
  • 错过下一个附加费层级的截止日期：在老化库存附加费上涨后才采取行动，且将其视为一次性费用而非随时间累积的月度费用。

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Part of Amazon Pro Skills. Production-grade skills for serious Amazon sellers. Free and open. Built by Jay Margaliot.
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