Free Break‑Even ROAS Calculator for Ecommerce & Google Ads
Enter your revenue, VAT rate, ad spend, product margin, return rate, shipping costs, and payment processing fees below.
The calculator instantly shows your ROAS, break-even ROAS, net profit, total variable costs, and contribution margin,, so you know the minimum ROAS needed to run profitable ads.
Table of contents:
What is break‑even ROAS?

Side note
Contribution margin covers variable costs only. Net margin subtracts fixed overhead too. Break‑even ROAS uses contribution margin to set ad guardrails.
How to calculate ROAS break‑even point (with example)

Meaning:
at ROAS 2.22 (Break-even Point), your ad‑attributed revenue just covers your ad spend and variable costs. Above 2.22, you contribute profit before fixed overhead.
Why break‑even ROAS matters
Break-even ROAS gives you:
ROAS guardrail
a "do-not-cross" threshold that protects contribution margin
Bidding logic
set tROAS/tCPA or manual bids with clear margin justification
Scaling confidence
if observed ROAS ≥ break-even ROAS, you can profitably scale (subject to LTV)
Budget allocation
quickly spot underperforming campaigns and shift spend to products, keywords, or audiences that meet your margin threshold
Strategic clarity
decide when to scale, test new channels, or adjust pricing backed by ROAS targets tied to actual margins
Factors that shift your true break‑even
Returns and refunds
Adjust revenue for expected returns or add reverse‑logistics costs to variable costs.
Model return rates by category/SKU, not account‑wide averages.
Taxes/VAT/GST
Exclude VAT/GST from revenue and apply costs on the same VAT‑exclusive basis.
Align accounting data so revenue and costs use the same tax basis.
Payment mix
Fees differ by method (e.g., BNPL, AmEx).
Weight fees by payment‑method share to get an accurate blended rate.
Marketplaces and platforms
Referral/FBA fees and higher return rates change unit economics.
Include marketplace fees and expected returns in "variable costs."
Use break‑even ROAS in Google Ads (Shopping / PMAX)
Turn a single break‑even number into account structure and bid targets.
Enrich Products with Business Intelligence
Add margin, returns, stock, price position, and cost signals to your product data.
Enrich each product with key business attributes such as profit margin, average return rate, payment and shipping cost profiles, stock availability, and price competitiveness.

Including these signals directly in your product feed or data sources enables more informed segmentation, bidding, and optimization decisions through the use of an product score.
Segment products by performance
Group products by efficiency, volume, and profitability for instant visibility into what’s performing well.
From there, shift budget toward top performers and pull back on underperformers, maximizing return per ad dollar.
Product Metrics uses AI to handle product segmentation automatically, sorting your products into five product segments:
Breakdown:
Stars
High Volume, High ROAS
Cash Cows
Low Volume, High ROAS
Question Marks
High Volume, Medium ROAS
Dogs
Medium Volume, Low ROAS
Drainers
Low Volume, Low ROAS
Design the Campaign Structure
Align campaign architecture with product segments and business priorities.
Build campaigns or asset groups per segment. Use inventory/listing group filters to isolate segments so budgets and targets don't blend.
Set Targets by Strategy
Apply bidding and ROAS targets based on each segment's role in the overall strategy.
Set tROAS at break‑even +10–20%:
High‑margin example: floor 2.2 → tROAS 2.5–2.7
Mid‑margin example: floor 3.3 → tROAS 3.6–4.0
Low‑margin example: floor 5.0 → tROAS 5.5–6.0
Monitor and iterate:
Watch 7‑day lag‑adjusted contribution by segment weekly.

Use Product Metrics Labelizer to automatically categorize your products and create custom labels that enhance your campaign targeting and performance.
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