Meta & Google Ads Break-Even ROAS & CPA Calculator
Calculate your break-even ROAS and maximum cost per acquisition (CPA) on Meta and Google Ads. Accounts for product cost, payment fees, shipping and agency overhead, then compares the result with WordStream's 2026 average cost per click and cost per lead for your industry.
Unit Economics & Costs
Retail selling price or contract deal size
Direct fulfillment / supplier cost per unit
Outbound parcel freight & box packing
Percentage your gateway takes, for example 2.9%
Flat part of the fee, for example $0.30. Use 0 if none
Media retainer or ad automation tool cost
Used to amortize monthly retainer overhead
Target net margin left over after all ad spend
Model cost-per-lead and sales closing rates
WordStream's 23 business categories. Pick the closest one to your business.
Shopping, Collectibles & Gifts: average ad costs
Average cost per click, and the share of clicks that must end in a sale for you to break even at that click cost.
| Platform | Avg CPC | Clicks that must buy | Published conversion rate |
|---|---|---|---|
| Google search ads | $4.14 | 7.99% | 4.01% |
| Meta traffic campaigns | $0.59 | 1.14% | Not published |
Google's published conversion rate counts every conversion action advertisers track, not only sales, and WordStream publishes no purchase rate for Meta, so no pass or fail is given here.
Averages across WordStream's client accounts (Google Ads and Facebook Ads Benchmarks 2026), checked 2026-11-10. Your own costs will differ. Google Ads Benchmarks 2026 · Facebook Ads Benchmarks 2026
Frequently Asked Questions & How It Works
Quick answers on Break-Even ROAS, target CPA modeling, and how contribution margins determine ad profitability.
What is Break-Even ROAS, and how is it calculated?
Break-Even ROAS (Return on Ad Spend) is the exact revenue multiplier your advertising campaigns must generate to cover all product costs, payment gateway cuts, and operational overhead without losing money. It is calculated as Selling Price divided by Contribution Margin (Price - COGS - Payment Fees - Shipping - Agency Overhead). If a $100 product leaves $40 in contribution margin, your break-even CPA is $40, and your break-even ROAS is 100 ÷ 40 = 2.50x.
What is the difference between ROAS and ROI in advertising?
ROAS measures revenue per dollar spent on ads (revenue ÷ ad spend). It ignores product costs, fees and shipping. ROI measures profit as a share of everything you spent: (revenue − all costs including ad spend) ÷ all costs. A campaign with a strong 4.0x ROAS can still lose money if the product has a thin margin and high shipping costs.
How does payment processing impact my break-even target?
Payment gateways take a fee from every order before you are paid. A gateway that charges 2.9% + $0.30 per card payment keeps $1.75 of a $50 order. Rates differ by country, payment method and plan, so enter the figures from your own gateway's rate card. Counting the fee in your unit economics stops you from overestimating how much you can spend on ads.
How do I calculate Break-Even CPL for high-ticket lead generation?
Multiply your Break-Even CPA by your sales conversion rate. For instance, if an agency deal is worth $3,000 with $2,462 in net margin (Break-Even CPA = $2,462), and your sales team closes 5% of booked consultation calls (1 in 20), your maximum affordable Cost Per Lead (CPL) is $2,462 × 0.05 = $123.10. Bidding below $123 per qualified call guarantees profitability.
Why do industry average ROAS benchmarks differ between Google and Meta?
Click costs differ a lot by platform. In WordStream's 2026 reports the average cost per click runs from $1.63 to $9.87 on Google search across 23 industries, but only $0.34 to $0.86 on Meta traffic campaigns across 22 categories. Google search reaches people who are already searching for what you sell, so clicks cost more. Meta shows ads to people who are browsing, so clicks cost less and fewer of them are ready to buy. Which one works for you depends on whether people search for your product and on your own click-to-sale rate.
Related reading
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