Tariffs hit your Amazon margin at the very first line of your P&L: they raise your landed cost, which inflates your cost of goods sold (COGS), which compresses everything downstream. For a seller importing from China in 2026, this is no longer a single rate you can look up — it’s a stack of duties layered on top of one another, and the average effective rate on Chinese goods sat near 24% in mid-2026 according to the Penn Wharton Budget Model. Combined with the elimination of the $800 de minimis exemption, tariffs have become one of the largest and most volatile inputs into Amazon profitability — and the sellers who price against last year’s numbers are quietly running products at a loss.
How do tariffs actually reach an Amazon seller’s P&L?
A tariff is a duty paid at the U.S. border, calculated on the declared customs value of your goods. It becomes part of your landed cost — the all-in cost of getting a unit to Amazon’s fulfillment center, which includes the product itself, freight, insurance, customs brokerage, and duties. Landed cost is what should populate the COGS field in your profit calculations.
The mechanical problem is that many sellers still set COGS to the factory invoice price. When a 24% duty is added at the border but never flows into the COGS field, the seller’s dashboard reports a margin that is 20-plus points too high. The tariff is real money leaving the business; if it doesn’t appear in your unit economics, your reported profit is fiction.
What tariffs apply to Chinese imports in 2026?
Several layers can apply to the same product at once, stacked on top of the base rate for its HTS (Harmonized Tariff Schedule) classification:
| Layer | Typical rate (2026) | Notes |
| Base MFN / HTS duty | 0–~10% | Determined by product’s HTS code |
| Section 301 | 7.5–25% | Category-dependent; remains fully active |
| Section 122 / reciprocal | ~10–15% | Executive-order layer; subject to expiry |
| Average effective rate | ~24% | Penn Wharton estimate, mid-2026 |
Because the layers stack, real-world combined rates vary widely by product. A consumer-electronics item with a 0% base rate plus a 25% Section 301 duty plus a 15% reciprocal layer faces roughly 40%. A kitchen-housewares item at a ~3% base plus 25% plus 10% lands near 38%. The lesson sellers learn painfully: budgeting a flat “25%” when your product actually carries three stacked layers is how a shipment arrives with a duty bill hundreds or thousands of dollars higher than planned.
Your real number depends entirely on your HTS classification, which is why correct classification (and professional brokerage) pays for itself — a wrong code either overpays duties or triggers costly customs delays.
What changed when de minimis ended?
For years, the Section 321 de minimis rule let shipments under $800 enter the U.S. duty-free and without formal customs entry. That exemption ended for Chinese-origin goods on May 2, 2025, and was suspended globally on August 29, 2025.
The practical consequences for FBA sellers:
- No more duty-free small parcels. Splitting orders into sub-$800 shipments to dodge duty no longer works.
- Formal customs entry is now required on every shipment, adding roughly $125–$300 in broker fees per entry.
- Delivered Duty Paid (DDP) shipping is effectively mandatory if you want to avoid customs holds and surprise tariff bills at the door.
These are fixed costs that land regardless of how you ship, so they hit small and frequent shipments proportionally harder — a real tension with the inventory strategy of shipping little and often to control storage fees.
How do you recalculate true landed cost and margin?
Work it in layers on the customs value, then add the border costs:
Worked example — 1,000 units, $6.00 factory cost each, kitchen category:
- Goods value: 1,000 × $6.00 = $6,000
- Base HTS duty (3%): $180
- Section 301 (25%): $1,500
- Reciprocal layer (10%): $600
- Total duties: $2,280 (a 38% effective rate)
- Freight + insurance: ~$1,200
- Customs brokerage / entry: ~$250
- Total landed cost: $9,730 → $9.73 per unit
The factory price said $6.00. The true landed cost is $9.73 — a 62% increase over the invoice figure. If this seller’s COGS field still reads $6.00, every downstream margin, break-even ACOS, and minimum price is wrong.
What deadlines could change your costs?
Tariff policy has been unusually fluid, so two dates are worth watching heading into late 2026:
- July 24, 2026 — the Section 122 layer was set to expire absent Congressional action; watch for replacement Section 301 actions announced around the same window.
- November 10, 2026 — a set of Section 301 product exclusions (roughly 178 of them) was scheduled to lapse. If your product depends on one, lock in sourcing alternatives before Q4.
Because these dates can shift, treat any specific rate in this article as a planning estimate and confirm your product’s current duty with your customs broker or a live tariff lookup before committing a purchase order.
How do you protect margin against tariffs?
The durable levers are structural, not tactical: verify your HTS classification (a wrong code can overpay by double digits), consolidate shipments to spread the fixed entry cost, evaluate alternative sourcing countries for products where the China premium is largest, and — critically — keep your landed cost updated in your profit tracking every time duties change. A profit-analytics platform like sellerboard lets you set per-SKU COGS to true landed cost, so a tariff change flows straight into net margin and you see immediately which products no longer clear their break-even.
Frequently asked questions
Do tariffs count as COGS or a separate expense? Treat duties, freight, and brokerage as part of landed cost, which populates COGS. That keeps your gross margin honest and your break-even math correct.
What’s the average tariff on Chinese goods right now? The Penn Wharton Budget Model estimated an average effective rate near 24% in mid-2026, but your product’s actual rate depends on its HTS code and can range from single digits to 40%+ once layers stack.
Can I still ship small parcels duty-free? No. The de minimis exemption ended for Chinese goods in May 2025 and globally in August 2025. Every shipment now requires formal entry and is subject to full duties.
How much does formal customs entry add? Roughly $125–$300 per entry in broker fees, plus the duties themselves — a fixed cost that makes very small, frequent shipments relatively more expensive.
Should I raise prices to cover tariffs? Only after recalculating true landed cost and break-even. A tariff-driven cost increase of a few dollars per unit can erase a thin margin entirely; the right response depends on your category’s price sensitivity and your competitors’ sourcing exposure.
