Naver Smart Store & Coupang Fee Calculator

About Korean marketplace seller fees

Selling through a major Korean online marketplace like Naver Smart Store or Coupang means the platform takes a commission on each sale, which — combined with your product cost and shipping — determines your actual per-unit profit margin. This tool calculates your net profit and margin percentage after accounting for platform commission, cost of goods, and any additional per-item costs you enter.

How the profit and margin are calculated

The platform commission is calculated as your selling price × commission rate (which differs between Naver Smart Store's and Coupang's typical published rates, though this tool lets you enter or adjust the exact rate), then subtracted from your selling price along with your cost of goods and any per-item shipping or other costs to arrive at net profit — margin is calculated as net profit divided by selling price (showing what percentage of revenue is actual profit), while per-unit profit is simply the currency amount you keep from each sale.

Frequently asked questions

Why do Naver Smart Store and Coupang have different default commission rates?

Each platform sets its own commission structure based on its specific business model, category-based fee schedules, and seller program tier — actual rates can also vary by product category and seller sales volume on both platforms, so always check your specific store's actual confirmed rate rather than assuming a flat default.

Does this include advertising costs or other seller fees?

No — this calculator specifically covers the marketplace's standard sales commission, product cost, and any shipping/other per-item costs you manually enter. Separate costs like paid product ads, platform membership fees, or payment processing surcharges aren't automatically included and would further reduce your actual net profit if applicable.

Why might my margin look thin even with a reasonable selling price?

Marketplace commissions (often in the high single digits to low double digits percentage-wise) combine with product cost and shipping to eat into revenue more than many new sellers initially expect — this is exactly why calculating margin explicitly, rather than estimating by feel, is useful for setting sustainable pricing.