Your Own Online Store Tax Guide

From the PG payment-gateway settlement structure to issuing your own tax invoices — a tax guide built for independent online store operators.

Selling directly, without a platform, means handling tax invoices directly too

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My PG settlement for my own store arrives late — can I still record revenue based on the settlement date?

No. Revenue should, in principle, be recognized at the point of the actual sale — when payment is completed — not when your PG provider pays out the settlement. Even if the settlement is delayed by a few days, you must record it as revenue in the tax period containing the confirmed sale date. Unlike Smart Store or Coupang, your own store also requires you to issue and manage your own tax invoices, so we recommend keeping the PG payment-processing fee's tax invoice on hand and expensing it as well.

Characteristics of Your Own Store's Income Structure

Runs on store-building solutions like Cafe24, Godomall, or Makeshop
Card and easy-payment settlement through a PG (payment gateway) provider
A structure where you transact directly with customers, without joining a platform
Commonly run alongside Smart Store and Coupang
Mail-order sales registration is mandatory regardless of platform participation; converts to general taxpayer once annual revenue exceeds ₩104 million

Key Deductible Expense Items

PG payment-processing fee
Store solution subscription fee, hosting fee, domain cost
Shipping costs, packaging materials
SNS and search advertising spend
Product-page design fees, outsourced development (3.3% withholding)

Tax Advantages for Your Own Store Operators

Issuing your own tax invoices widens your input-tax-credit room

Unlike joining a platform, you can issue and receive tax invoices directly as a business owner — manage your tax invoices with your suppliers well, and you can claim a broader range of input tax credits.

PG fees are fully deductible

You can receive a tax invoice from your PG provider and fully expense the payment-processing fee as a necessary business cost.

If you run multiple channels, use your own store's data as the baseline

If you run Smart Store and Coupang alongside your own store, it's advantageous to consolidate all your revenue based on the accurate data coming out of your own order/payment system.

The Most Common Mistake We See

It's common to mistake the PG settlement payout date for the revenue-recognition date. Revenue must be recognized at the point of the actual sale (when payment is completed) — even if the PG settlement is delayed, you must record it in the tax period that contains the confirmed sale date.

Frequently Asked Questions

Channels May Differ, but 103Tax Handles the Tax Troubleshooting

Tax Accountant Kwon Ji-hyun, who knows your own store's settlement structure precisely, is ready to consult with you

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