Use this US import duty calculator to estimate US duties and fees on a shipment. This calculator estimates the US duties and fees on an import shipment. It covers the normal tariff rate, any extra tariff layers (Section 232, Section 301, Section 338), the Merchandise Processing Fee (MPF) and, for ocean freight, the Harbor Maintenance Fee (HMF). US tariffs have changed several times since 2025, so this page also explains what is in force as of October 2026.
For any real shipment, confirm your classification and rates in the official Harmonized Tariff Schedule (USITC) or with a licensed customs broker.
Where US tariffs stand in October 2026
- IEEPA tariffs are gone. On February 20, 2026 the Supreme Court ruled that the IEEPA “reciprocal” and related tariffs were unlawful. CBP has been processing refunds through its CAPE system.
- The 10% Section 122 tariff expired on July 24, 2026.
- Section 301 forced-labor tariffs of 10% or 12.5% apply to goods from 60 economies from July 2026, with some exemptions, including USMCA-compliant goods.
- Section 232 tariffs apply to steel, aluminum, copper, autos and parts, trucks, timber and lumber, semiconductors, pharmaceuticals, drones and more. Rates run from 10% to 100% depending on product and country.
- Other Section 301 actions include 25% on many Brazilian goods and the long-running China tariffs.
- Section 338 duties of 50% apply to selected Canadian goods.
- De minimis duty-free treatment (the old $800 rule) is still suspended. Low-value parcels owe duties.
Source: Congressional Research Service fact sheet R49481 (current as of September 30, 2026). Rates change often, so the US import duty calculator lets you enter each layer yourself and never assumes a rate for you.
Who should use this
Small importers, Amazon and Shopify sellers, people buying goods from overseas suppliers, and anyone pricing landed cost. The US import duty calculator is a planning tool. Your customs broker files the actual entry.
How to use the US import duty calculator
- Enter the customs value. That is usually the transaction value: the price paid for the goods, excluding international freight and insurance. Assists and some royalties must be added.
- Enter the HTS code and its general (MFN) duty rate from the HTS. A free-trade agreement rate can replace it if you qualify.
- Add any extra tariff layers that apply: Section 232, Section 301 or Section 338, each as a percentage.
- Choose formal or informal entry and ocean or air transport.
- Read the total duty, fees and landed cost per unit from the US import duty calculator.
The formula
Duty = Customs value × (MFN rate + Section 232 + Section 301 + Section 338 + other)
MPF (formal entry) = Customs value × 0.3464%, kept between $34.58 and $670.86 (FY2027 limits, from October 1, 2026).
HMF (ocean only) = Customs value × 0.125%
Total cost = Duty + MPF + HMF. Landed cost = goods + freight + insurance + total cost + broker fees.
Some layers do not stack. For example, goods covered by certain Section 232 actions may be exempt from other tariffs. The US import duty calculator includes a “does not stack” toggle for each layer.
Worked examples
Example 1: ocean shipment, apparel
Customs value $20,000. MFN rate 16% (example only, as rates vary by HTS line). The supplier’s country faces a 10% Section 301 forced-labor tariff. Duty = $20,000 × 26% = $5,200. MPF = $20,000 × 0.3464% = $69.28. HMF = $25.00. Total = $5,294.28.
Example 2: high-value air shipment of aluminum goods
Customs value $250,000. MFN 5%. Section 232 aluminum 50% (assume it applies and does not stack with other layers). Duty = $250,000 × 55% = $137,500. MPF = $866 by formula, capped at $670.86. No HMF by air. Total = $138,170.86.
Fees and thresholds
| Item | Figure | Source / status |
|---|---|---|
| MPF rate (formal entry) | 0.3464% ad valorem | CBP, FY2027 |
| MPF minimum / maximum | $34.58 / $670.86 | Federal Register, 91 FR 48398 (from Oct 1, 2026) |
| Harbor Maintenance Fee | 0.125% (ocean only) | 19 CFR 24.24 |
| De minimis | Duty-free treatment suspended | CRS R49481 |
| IEEPA tariffs | Invalid; not collected since Feb 2026 | Supreme Court / CBP |
| Section 301 forced-labor tariffs | 10%–12.5%, 60 economies | USTR, 91 FR 47318 |
| Section 232 | 10%–100% by product and country | BIS / proclamations |
Informal entries and small parcels
Shipments valued at $2,500 or less can usually clear as informal entries, which have a lower, flat-rate MPF instead of the 0.3464% formula. With de minimis suspended, even small parcels from overseas sellers now owe duties, and postal or courier carriers may add their own brokerage charges.
Common mistakes
- Using the wrong HTS code. Classification drives every rate. Get a binding ruling from CBP if unsure.
- Adding freight to the customs value. The US uses FOB-style value. International freight and insurance are usually excluded.
- Assuming country of shipment is country of origin. Origin is where the goods were made or substantially transformed.
- Relying on old de minimis rules. Low-value shipments are no longer duty-free.
- Using early-2026 tariff tables. IEEPA and Section 122 rates no longer apply.
Tips
- Before you use the US import duty calculator, check whether your goods qualify under USMCA or another free trade agreement. Several tariff layers exempt qualifying goods.
- If you paid IEEPA duties in 2025–2026, ask your broker about CBP’s refund process.
- Build a buffer of 5–10% into pricing while Section 232 and 301 investigations remain open.
- Re-run the US import duty calculator whenever a rate changes, and sign up for CBP CSMS messages to hear about rate changes the day they happen.
Our unique angle: a layer-by-layer duty stack
Most duty calculators show one blended rate. Our US import duty calculator lists each tariff layer on its own line, with its legal authority and a stack/no-stack switch. That makes it easy to see what changes if one action ends, a deal lowers a rate, or the goods qualify for an exemption.
Last reviewed: October 2026
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