Customs Duty Calculator

Duty rate	Landed cost / unit	Total landed cost	Margin at $19.99
0%	$8.00	$4,000.00	59.98%
5%	$8.34	$4,170.00	58.28%
10%	$8.68	$4,340.00	56.58%
15%	$9.02	$4,510.00	54.88%
20%	$9.36	$4,680.00	53.18%
25%	$9.70	$4,850.00	51.48%

Price	Free, no sign-up
Input	Goods value, quantity, freight, duty rate, other fees
Output	Duty amount, landed cost per unit at six duty rates, margin impact
Runs	Entirely in your browser

What is Customs Duty Calculator?

Import duty is a tax charged by the destination country on the value of imported goods, set by the product's HS code and origin. Two details catch sellers out: the dutiable value is often CIF (goods plus insurance plus freight), not the supplier invoice alone, and a few percentage points of duty can move landed cost more than any supplier negotiation. This calculator computes duty from the goods value at the rate you enter, folds it into the shipment's total cost, and then repeats the maths at 0%, 5%, 10%, 15%, 20% and 25% so you can see exactly how much of your margin a tariff change would take.

Common Uses for Customs Duty Calculator

Estimate the duty bill before you place an import order
Check whether a product stays viable at a higher tariff rate
Compare sourcing from two countries with different duty rates
Prepare landed cost figures for a price review
Explain the margin impact of a tariff change to a partner

Why the CIF base matters

Duty on a CIF base means freight is taxed too. A $3,400 shipment with $420 of freight and 6.5% duty pays $248 rather than $221 — 12% more duty for the same goods. On high-freight, low-value products the CIF base can be the difference between viable and not.

Reading the sensitivity table

The table shows landed cost per unit at six duty rates. If your product reaches zero margin at the 15% row, a trade dispute or reclassification that lands you there removes the entire business case for that SKU. Products that survive to 25% are the ones worth scaling.

Duty is a sourcing decision

Two suppliers quoting the same price can differ by 10 points of duty depending on origin and the trade agreements in force. Compare duty-adjusted landed cost, not unit price, which is what the landed cost calculator does once you enter the rate found here.

Frequently Asked Questions

How is import duty calculated?

Usually as a percentage of the customs value, which in many countries is the CIF value: goods cost plus insurance plus freight to the port of entry. Some countries use FOB only. Duty rate comes from the HS code classification.

Where do I find the HS code?

Ask your supplier, then verify it in the destination country's tariff database — the HTSUS in the US, TARIC in the EU, or your customs broker. Misclassification is the most common reason duty bills come in higher than planned.

Does duty apply to shipping?

On a CIF basis, yes, freight and insurance are dutiable. If your goods are duty-free but freight-heavy, the base still matters for the customs declaration and for VAT.

Can I reduce the duty legally?

Yes: correct classification, preferential origin under a trade agreement, duty drawback on re-exported goods, first-sale valuation in some jurisdictions, and de minimis thresholds for low-value shipments. Each needs documentation, so involve a broker.

What about VAT or sales tax on import?

It is usually charged on the CIF value plus duty. Registered businesses often recover it, which is why it is treated as a separate line from duty — enter it in other fees if it is not recoverable.