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        <title><![CDATA[MarginStack Blog]]></title>
        <description><![CDATA[Supply chain cost insights, import duty guides, and FBA profitability analysis for Amazon sellers.]]></description>
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        <pubDate>Sun, 05 Apr 2026 15:42:47 GMT</pubDate>
        <copyright><![CDATA[2026 MarginStack]]></copyright>
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            <title><![CDATA[Iran Crisis Closes Hormuz: What It Means for FBA Landed Costs]]></title>
            <description><![CDATA[The Strait of Hormuz is shut, oil hit $91, and freight surcharges are stacking. Here is how Operation Epic Fury reprices every cost line for Amazon FBA importers.]]></description>
            <link>https://marginstack.io/blog/iran-hormuz-crisis-fba-seller-costs-2026</link>
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            <category><![CDATA[logistics]]></category>
            <category><![CDATA[Iran]]></category>
            <category><![CDATA[Strait of Hormuz]]></category>
            <category><![CDATA[freight rates]]></category>
            <category><![CDATA[oil prices]]></category>
            <category><![CDATA[war risk]]></category>
            <category><![CDATA[supply chain disruption]]></category>
            <category><![CDATA[landed cost]]></category>
            <category><![CDATA[Operation Epic Fury]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sun, 08 Mar 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[Section 301 Tariffs on Chinese Imports: What FBA Sellers Need to Know in 2026]]></title>
            <description><![CDATA[Section 301 tariffs add 7.5% to 100% on top of base duty rates for Chinese imports. Here's which list your product is on, what you're actually paying, and whether exclusions apply.]]></description>
            <link>https://marginstack.io/blog/section-301-tariffs-chinese-imports-fba-sellers-2026</link>
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            <category><![CDATA[import-duties]]></category>
            <category><![CDATA[section 301]]></category>
            <category><![CDATA[china tariffs]]></category>
            <category><![CDATA[tariff list]]></category>
            <category><![CDATA[USTR]]></category>
            <category><![CDATA[import duties]]></category>
            <category><![CDATA[trade war]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Thu, 26 Feb 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[How to Find Your Product's HS Code (Without Paying a Broker)]]></title>
            <description><![CDATA[Your HS code determines every duty rate you pay. Here's how to look it up yourself using free government tools, plus the classification mistakes that cost sellers thousands.]]></description>
            <link>https://marginstack.io/blog/how-to-find-your-hs-code-without-paying-a-broker</link>
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            <category><![CDATA[import-duties]]></category>
            <category><![CDATA[HS code]]></category>
            <category><![CDATA[hs code lookup]]></category>
            <category><![CDATA[import duties]]></category>
            <category><![CDATA[customs classification]]></category>
            <category><![CDATA[tariff schedule]]></category>
            <category><![CDATA[HTS]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Tue, 24 Feb 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[After IEEPA Fell: Section 122 at 15%, Refund Chaos, and the 150-Day Clock]]></title>
            <description><![CDATA[The Supreme Court struck down all IEEPA tariffs. The replacement Section 122 at 15% reshuffles winners and losers, creates a $175B refund liability, and expires in 150 days. Here is what changed.]]></description>
            <link>https://marginstack.io/blog/scotus-ieepa-ruling-consequences-what-importers-need-to-know</link>
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            <category><![CDATA[import-duties]]></category>
            <category><![CDATA[SCOTUS]]></category>
            <category><![CDATA[IEEPA]]></category>
            <category><![CDATA[Section 122]]></category>
            <category><![CDATA[tariff ruling]]></category>
            <category><![CDATA[Supreme Court tariffs]]></category>
            <category><![CDATA[import duties]]></category>
            <category><![CDATA[landed cost]]></category>
            <category><![CDATA[trade policy]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sun, 22 Feb 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[The Ultimate Guide to US Customs, Tariffs, and Duties for Amazon FBA Sellers of Imported Goods]]></title>
            <description><![CDATA[Everything Amazon FBA importers need to know about US customs duties, tariff stacking, Section 301, Section 122, and the true cost of importing from China and beyond.]]></description>
            <link>https://marginstack.io/blog/ultimate-guide-us-customs-tariffs-fba-sellers</link>
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            <category><![CDATA[import-duties]]></category>
            <category><![CDATA[customs duties]]></category>
            <category><![CDATA[Section 301]]></category>
            <category><![CDATA[Section 122]]></category>
            <category><![CDATA[SCOTUS]]></category>
            <category><![CDATA[landed cost]]></category>
            <category><![CDATA[Amazon FBA]]></category>
            <category><![CDATA[import tariffs]]></category>
            <category><![CDATA[China sourcing]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sun, 22 Feb 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[What Is Landed Cost? A Guide for Amazon FBA Importers]]></title>
            <description><![CDATA[Landed cost is everything it costs to get your product from the factory to Amazon's warehouse. Here's how to calculate it, what most sellers miss, and why it matters more than your FOB price.]]></description>
            <link>https://marginstack.io/blog/what-is-landed-cost-guide-amazon-fba</link>
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            <category><![CDATA[landed-cost]]></category>
            <category><![CDATA[landed cost]]></category>
            <category><![CDATA[FOB]]></category>
            <category><![CDATA[import costs]]></category>
            <category><![CDATA[FBA profitability]]></category>
            <category><![CDATA[cost waterfall]]></category>
            <category><![CDATA[customs duties]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sun, 22 Feb 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[Amazon FBA Fees in 2026: What Changed and What It Actually Costs You]]></title>
            <description><![CDATA[Amazon raised FBA fees again in 2026. Here's what changed, what it means per unit, and why the fee schedule only tells half the story if you import products.]]></description>
            <link>https://marginstack.io/blog/amazon-fba-fees-2026-what-changed</link>
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            <category><![CDATA[fba-fees]]></category>
            <category><![CDATA[FBA fees]]></category>
            <category><![CDATA[amazon fees 2026]]></category>
            <category><![CDATA[fulfillment fees]]></category>
            <category><![CDATA[storage fees]]></category>
            <category><![CDATA[inbound placement]]></category>
            <category><![CDATA[FBA profitability]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sat, 21 Feb 2026 00:00:00 GMT</pubDate>
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            <title><![CDATA[How US Import Duties Stack on Amazon FBA Products]]></title>
            <description><![CDATA[US import duties aren't a single tax. They're 3-4 layers that stack on top of each other. Here's how MFN duties, Section 301 tariffs, and Section 122 surcharges combine to eat your margin.]]></description>
            <link>https://marginstack.io/blog/how-us-import-duties-stack-on-amazon-fba-products</link>
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            <category><![CDATA[import-duties]]></category>
            <category><![CDATA[section 301]]></category>
            <category><![CDATA[tariff stacking]]></category>
            <category><![CDATA[Section 122]]></category>
            <category><![CDATA[import duties]]></category>
            <category><![CDATA[HS code]]></category>
            <category><![CDATA[customs]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sat, 21 Feb 2026 00:00:00 GMT</pubDate>
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        <item>
            <title><![CDATA[Supreme Court Strikes Down IEEPA Tariffs: Breaking Down the 6-3 Ruling]]></title>
            <description><![CDATA[The Supreme Court ruled 6-3 that IEEPA tariffs are unconstitutional. Here's what changed, what didn't, and what Amazon FBA sellers importing products should do next.]]></description>
            <link>https://marginstack.io/blog/scotus-ieepa-tariffs-struck-down</link>
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            <category><![CDATA[import-duties]]></category>
            <category><![CDATA[IEEPA]]></category>
            <category><![CDATA[tariff stacking]]></category>
            <category><![CDATA[Supreme Court]]></category>
            <category><![CDATA[import duties]]></category>
            <category><![CDATA[Section 301]]></category>
            <category><![CDATA[Section 232]]></category>
            <dc:creator><![CDATA[Pierre Quentin]]></dc:creator>
            <pubDate>Sat, 21 Feb 2026 00:00:00 GMT</pubDate>
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