남는 장사 - 마진 및 순이익 계산기

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Everyone
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Everyone
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About this app

Are you truly running a "profitable business"?

"Profitable Business" is the most complete margin and selling price calculator for online sellers on Smart Store, Coupang, and other online marketplaces. Beyond a simple (selling price - cost of goods sold), it reverse-calculates all hidden fees and taxes to accurately calculate your "final net profit" and "target selling price."

Why Choose "Profitable Business"?

- Target Profit-Based Selling Price Calculation: "I want to make exactly 10,000 won by selling this product?" Enter your target profit or target margin and we'll tell you the exact selling price you should sell for.
- Perfect Commission Calculation: Enter platform fees and payment (PG/card) fees separately to determine your actual settlement amount.
- Perfect Tax and VAT Application: 10% sales VAT is deducted as standard, and even purchase tax deductions refunded upon purchase (tax invoice) are reflected in the cost price. - Shipping and incidental expenses management: Accurately calculate the total payment subject to commissions by distinguishing between free shipping (paid by the seller) and paid shipping (paid by the customer). Don't overlook packaging costs and return on ad spend (ROAS).
- Return risk hedging: Returns are a chronic problem in online sales! By inputting the expected return rate and round-trip shipping costs, statistical losses are deducted from the margin in advance, helping you calculate conservatively and never incur losses.
- Save your own presets: Save the commissions and settings of your favorite online stores as presets and load them with one click at any time. (Default presets provided for Smart Store, Coupang, etc.)
- Calculation history: Save and compare previous calculations to establish optimal pricing policies.

Recommended for:
- Beginner sellers just starting their online store
- Professional sellers who are confused about settlement amounts due to multiple platforms
- Distributors who want to maximize margins while maintaining price competitiveness

Download now to make your business truly profitable!
Updated on
Mar 12, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

🎉 '남는 장사 - 마진 및 순이익 계산기' 정식 오픈!
온라인 셀러를 위한 가장 완벽한 마진 계산기 첫 번째 버전입니다.

- 💰 판매가 역산: 목표 이익/마진율에 맞는 판매가 자동 계산
- 📊 각종 비용 계산: 쇼핑몰/카드 수수료, 마케팅(ROAS), 부가세 완벽 적용
- 🛡️ 반품 리스크 헷징: 예상 반품률과 배송비를 반영해 손실 사전 방어
- 💾 프리셋 저장: 자주 쓰는 쇼핑몰 설정 저장 및 원클릭 불러오기
- 💱 다국어 환율 적용: USD, CNY, JPY 해외 소싱 원가 환율 적용 지원

여러분의 '남는 장사'를 응원합니다! 리뷰와 평점은 큰 힘이 됩니다.
Content rating
Everyone
Learn more

App support

About the developer
3J스튜디오
yungjoong.song@gmail.com
대한민국 18506 경기도 화성시 동탄대로4길 17, 3103동 1404호(장지동, 금호어울림레이크)
+82 10-6755-6994

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