Where do the category fees come from?

Based on the official Coupang Wing seller fee schedule (Jan 2026 update). The source is cited in the result-page footer.

Can Rocket Delivery (wholesale) sellers use this too?

For wholesale Rocket Delivery, Coupang negotiates a separate purchase price. The tool assumes "purchase price = settlement" and gives a margin estimate; exact margins should be reviewed against your wholesale contract.

How is the Coupang ads ROAS computed?

It shows both simple ROAS (revenue ÷ ad spend × 100) and break-even ROAS (factoring fees and fixed cost). For a deeper ad-side analysis, pair it with the coupangads tool.

Can I compare Coupang vs. other marketplaces?

This single tool covers Coupang only, but smartfee (Smart Store), 11stfee (11st), and gmarketfee (Gmarket) accept the same inputs for cross-marketplace comparison.

Can I use the output directly for bookkeeping?

It is a decision-support tool. Use the official Coupang Wing settlement statements for accounting and consult a CPA for tax filing.

Seller & Commerce · 🇰🇷 Korea

Coupang Seller Profit Calculator

LIVE

Compute Coupang seller net profit with category fees, RocketGross, VAT, and service fees — pairs with coupangads ROAS and coupang-rocketgrowth-sim logistics calculators.

Open the tool

About this tool

Coupang Seller Profit Calculator is a free tool for Coupang marketplace sellers. Enter selling price, cost of goods, category fee, RocketGrowth logistics, and VAT to instantly see per-unit net profit, margin %, and break-even price. The 2026 fee structure (category 4–10.8%, tiered RocketGrowth fees, service fees) is built in, and entering ad spend produces ROAS and break-even ROAS. New sellers use it to sanity-check pricing ("will this actually make money?"); experienced sellers use it as a margin sandbox when switching categories or moving to RocketGrowth. All inputs stay in your browser and are never sent to a server.

Use cases

Scenario 1

New seller pricing the first SKU

For a ₩7,000-cost SKU at 10.8% category fee on RocketGrowth, compare net profit at ₩19,900 / ₩22,900 / ₩24,900 to land on the right launch price.

Scenario 2

Rocket Delivery vs RocketGrowth

See side-by-side margins for the same SKU sold under wholesale (Rocket Delivery) vs. consignment (RocketGrowth).

Scenario 3

Break-even ROAS for ads

Compute the break-even ROAS and minimum CPC for a ₩1M/mo Coupang SP campaign so you have a baseline to optimize against.

Scenario 4

Category change impact

See how moving from Food (10.8%) to Home Appliances (7.8%) lifts margin and lowers your break-even price.

Scenario 5

Bulk discount / coupon simulation

Stack a ₩1,000 coupon and a 5% instant discount and instantly see what it does to settlement and margin — the basis for setting coupon caps.

Features

Auto-applied category fees (4–10.8%, 2026 schedule)
Tiered RocketGrowth storage / inbound / outbound (S/M/L)
Auto VAT separation between net and gross
Add ad spend → ROAS, break-even ROAS, and minimum CPC
Instant break-even (BEP) selling price
Searchable Coupang category → fee mapping
Downloadable summary table / CSV for your bookkeeping

Frequently asked

Q. Where do the category fees come from?: A. Based on the official Coupang Wing seller fee schedule (Jan 2026 update). The source is cited in the result-page footer.
Q. Can Rocket Delivery (wholesale) sellers use this too?: A. For wholesale Rocket Delivery, Coupang negotiates a separate purchase price. The tool assumes "purchase price = settlement" and gives a margin estimate; exact margins should be reviewed against your wholesale contract.
Q. How is the Coupang ads ROAS computed?: A. It shows both simple ROAS (revenue ÷ ad spend × 100) and break-even ROAS (factoring fees and fixed cost). For a deeper ad-side analysis, pair it with the coupangads tool.
Q. Can I compare Coupang vs. other marketplaces?: A. This single tool covers Coupang only, but smartfee (Smart Store), 11stfee (11st), and gmarketfee (Gmarket) accept the same inputs for cross-marketplace comparison.
Q. Can I use the output directly for bookkeeping?: A. It is a decision-support tool. Use the official Coupang Wing settlement statements for accounting and consult a CPA for tax filing.

Sources / references

Related guides / blog posts

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How we run it / disclaimer

This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.