Selling Used Goods Online in Korea: Tax Guide for Foreigners

Who this guide is for

• Foreign residents selling personal items before moving
• Regular resellers on Korean marketplaces
• Collectors selling repeated or high-value items
• Online sellers importing goods for resale

Key points

• Distinguish disposal of personal belongings from a continuous profit-seeking activity.
• Frequency, inventory sourcing, advertising, and resale intent matter together.
• Keep purchase and sale evidence even if the platform reports transactions.
• A business can trigger registration, income-tax, VAT, and receipt duties.
• Immigration permission must be checked separately from tax registration.

Detailed explanation

Start with why and how you sell

Selling a used desk, bicycle, and kitchen items after personal use does not look like buying ten similar products to resell each month. Create a short fact record: why each item was acquired, how long it was used, why it was sold, and whether similar inventory was purchased for resale.

Signs of a commercial activity

No single factor decides every case, but business risk grows when you:

• purchase or import inventory for resale;
• list similar new or refurbished items repeatedly;
• advertise continuously or maintain a storefront identity;
• price and operate for recurring profit;
• use dedicated storage, shipping, or staff; or
• combine platform activity with an existing retail business.

Do not confuse deposits with profit

For a business, platform deposits should be reconciled to gross sales, refunds, fees, shipping, and supported cost of goods. For personal disposals, preserve original purchase information and the facts showing personal use. A bank total by itself cannot reliably prove either taxable profit or a non-business sale.

Review connected duties

If the activity is a business, consider business registration, comprehensive income tax, VAT status, receipts, inventory records, and customs treatment. Foreign sellers must also confirm that their status of stay permits the activity. Tax registration does not expand immigration permission.

Keep a simple evidence file

Export platform histories periodically. Save photos, descriptions, purchase receipts, settlement reports, and shipping records. For higher-value goods, keep serial numbers, authentication, repair records, and proof of personal use. Consistent evidence is especially helpful when many deposits look commercial without context.

Documents you may need

• Original purchase receipts
• Listings and sale dates
• Platform settlement reports
• Shipping and payment records
• Inventory purchases
• Repair and selling-fee receipts
• Business registration if applicable
• Visa work-permission evidence

Common mistakes

• Assuming all secondhand sales are tax-free
• Assuming every platform deposit is taxable profit
• Deleting listings and purchase records after payment
• Importing inventory as personal goods and then reselling it
• Registering for tax without checking immigration permission

When should you ask a tax professional?

Ask a qualified tax professional if you have income from several countries, business income, unclear tax residency, treaty questions, missing documents, late filing concerns, or a visa situation that depends on tax records. This site explains general patterns only and cannot review your personal facts.

FAQ