Margin Engine provides practical ecommerce profit tools designed for Shopify founders, marketers, and DTC operators. These calculators help you understand your true margins, break-even ROAS, and profitable ad spend before scaling campaigns.
Most ecommerce brands rely on ROAS alone, but real profitability depends on refunds, fees, shipping, and discounts. Our tools help you calculate the numbers that actually matter.
Free Break-Even ROAS Calculator
Use our free break-even ROAS calculator to quickly determine the minimum ROAS required to avoid losing money on ads. Simply enter your product price, cost of goods, and other expenses to estimate your break-even point.
This tool is ideal for Shopify brands running Meta Ads, Google Ads, or TikTok Ads.
Advanced Break-Even ROAS Calculator
Our advanced calculator goes deeper by factoring in refunds, payment processing fees, discount rates, and profit targets.
This allows ecommerce brands to calculate a realistic ROAS target for scaling campaigns profitably.
Why These Tools Matter
Many ecommerce founders scale ads based on ROAS alone. However, revenue does not equal profit.
Refunds, transaction fees, and discounts silently reduce margins. Without calculating true break-even ROAS, brands may scale campaigns that are actually losing money.
Margin Engine tools help founders understand these hidden costs before increasing ad spend.