Tax & Duty King is more than a calculator. It is a full suite of AI-powered tools that keep your international pricing accurate, transparent, and compliant — automatically.
The Dashboard gives you an at-a-glance overview of your entire cross-border operation. From the moment you log in, you can see the health of your AI agents, recent calculation activity, and key metrics for your international orders.
VAT rates change. Governments update legislation. Our AI VAT Rate Agent monitors official sources for all 160+ supported countries on a weekly schedule, automatically updating your calculation engine the moment a rate changes.
Monitors EU rates via euvatrates.com and official government sources
Covers non-EU countries via AI research (GPT-4.1)
Full audit trail — see every rate change with old rate, new rate, date, and source
Manual override available for any country at any time
Import duty calculation is far more complex than VAT. It depends on the product's HS code, its country of origin, the destination country, and any applicable trade agreements. Our AI Duty Rate Agent manages all of this automatically.
A Harmonized System (HS) code is the internationally standardised number used by customs authorities to identify a product and determine its duty rate. Getting this right is critical. Tax & Duty King uses AI to classify your entire catalogue accurately and sync the codes to Shopify.
AI analyses your product title, description, and category to suggest the correct HS code
Review and approve suggestions in bulk or one by one
Push approved HS codes directly to Shopify product listings with one click
Shopify column shows real-time sync status for every product
Accurate fee calculations require accurate exchange rates. Our Currency Rate Agent fetches live rates from multiple reliable financial sources on an hourly schedule, ensuring every calculation reflects the current market rate.
The manual calculator is a powerful tool for your customer service team and for your own scenario planning. Quickly calculate the fees to pay on delivery for any product shipped to any country, without needing to place a test order.
Perfect for answering customer queries about import costs
Test how pricing changes affect fees to pay on delivery for key markets
See a full breakdown: VAT, duty, and any applicable fees
The in-cart widget is the customer-facing part of Tax & Duty King. It's designed to be flexible enough to blend seamlessly with any Shopify theme, from minimal to highly branded stores.
If your store sources products from multiple countries — different vendors, different suppliers, different origins — a single global origin setting will produce incorrect duty calculations for most of your catalogue. Multi-Origin solves this by letting you assign a specific country of origin to each vendor in your Shopify product catalogue.
| Vendor | Origin | TCA | DDP |
|---|---|---|---|
| Acme Apparel | 🇩🇪 DE | ✓ 0% duty | — |
| Pacific Goods | 🇨🇳 CN | N/A | — |
| LuxBrand EU | 🇫🇷 FR | ✓ 0% duty | Hide |
| Default | 🇬🇧 GB | N/A | — |
Some merchants absorb import duties for specific markets, building the cost into their Shopify Market prices. For these customers, showing an import fee estimate in the cart would be incorrect and confusing. DDP mode suppresses the calculator entirely and replaces it with a clear “Tax & Duties Already Paid” message.
Raise your product prices in Shopify Admin → Markets for the selected countries to include the estimated duty cost before enabling DDP. Enabling DDP without adjusting prices means you absorb the duty cost at a loss.