Overseas Sourcing & Purchase Agency Tax Guide

From reselling vs. purchase agency vs. no-inventory dropshipping revenue-recognition standards to customs-fee expense treatment — everything covered here.

No inventory doesn't mean no revenue-recognition standard — you still need one

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I'm starting an overseas purchase-agency business — should I register as a reseller or a purchase agent?

Reselling — buying inventory directly overseas and holding it before selling — makes the full sale price your revenue, while purchase agency, where you only broker the purchase on the customer's behalf, usually recognizes only the commission as revenue, resulting in a very different tax-burden structure. The correct treatment depends on your contract and settlement structure, so it's important to clearly define your transaction type early and register under the matching business code — we recommend a consultation beforehand to get this right.

Income-Structure Differences by Business Type

Reselling — buy inventory directly overseas, hold and sell it; the full sale price is revenue
Purchase agency — only broker purchase and shipping on the customer's behalf; only the commission is revenue
No-inventory dropshipping — no inventory held; the supplier ships directly upon order
If you mix all three forms, you need precise business-type/category classification at registration
Mail-order sales registration is mandatory; resellers convert to general taxpayer once annual revenue exceeds ₩104 million

Key Deductible Expense Items

Overseas shipping-agent-address usage fee, international shipping costs
Customs brokerage fees, tariffs (for reselling)
Translation fees (3.3% withholding if outsourced)
Currency-exchange fees, overseas card-payment fees
Platform sales commission, ad spend

Tax Advantages for Purchase Agency & Dropshipping

Purchase agency only needs the commission filed as revenue

If your contract clearly establishes a pure agency structure, you can recognize only the commission — not the full product sale price — as revenue and reduce your tax burden. You'll need to be able to demonstrate the agency relationship through your contract or transaction structure.

If you're doing reverse direct purchase (overseas sales), consider the zero rate

Conversely, if you're structured for reverse direct purchase — selling domestic products to overseas customers — you may qualify as a foreign-exchange-earning service and be eligible to apply the VAT zero rate (0%).

Put your business form in writing

Because your revenue scale and tax structure differ completely depending on whether you're reselling or acting as an agent, it's safest to clearly document the transaction type in your contracts with suppliers and customers.

The Most Common Mistake We See

The most common mistake is operating with an unclear contract structure — not sure whether you're reselling or acting as a purchase agent — and then getting confused about how to file when it's time to record revenue. It's important to clearly define your transaction type from the start and register under the matching business code.

Frequently Asked Questions

Channels May Differ, but 103Tax Handles the Tax Troubleshooting

Tax Accountant Kwon Ji-hyun, who knows purchase-agency and dropshipping revenue structures precisely, is ready to consult with you

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