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Ad Scaling System · Calculator

Know your exact ROAS floor and max safe CPA before you touch your ad budget

A 4-tab live calculator and reference guide that replaces gut feel with specific numbers. Break-even ROAS, CPA limits, budget safety rules, and creative rotation timing — in one tool.

In short

The Ad Spend Template is a $17 break-even ROAS calculator for ecommerce ads: a 4-tab interactive calculator with a printable PDF reference. Enter AOV, product cost, processing fees and refund rate to get your break-even ROAS, scale target and maximum profitable CPA, plus budget safety rules.

$17One-time · Instant access
Interactive HTML calculator + printable PDF reference · 30-day refund guarantee

Most ad accounts are run on a mix of platform ROAS, gut feel, and the vague sense that things are going well. Until suddenly they aren't.

  • You're scaling based on platform ROAS — which is 20–30% higher than what Shopify actually attributes
  • You don't know the specific number below which every sale loses money
  • You've killed campaigns too early — and scaled ones that were never actually profitable
  • Your creative goes stale and you don't know when to rotate it versus when the audience is saturated
  • You make budget decisions on a Friday afternoon based on a week that doesn't reflect Monday's numbers

These are not strategy problems. They are measurement problems. This tool solves them with four formulas and a set of rules that take 90 seconds to check.

What's inside — 4 tabs
1
Break-Even ROAS Calculator
Enter your AOV, COGS, processing fees, and refund rate. Get your break-even ROAS, scale target, revenue margin per order, and max profitable CAC — live as you type.
2
CPA & Budget Safety Calculator
Break-even CPA at your target margin. Max safe weekly ad spend based on bank balance. Cash runway indicator with green/amber/red status.
3
Weekly Decision Rules — Quick Check
Enter this week's ROAS, refund rate, AOV, CAC, and balance. Get an instant verdict on each of 5 non-negotiable rules: Scale / Hold / Pause / Act — with the exact action mapped.
4
Creative Rotation Protocol
Rotation rules by spend level. Day-by-day rotation schedule. Fatigue threshold reference (Meta cold: 3.5, TikTok cold: 4.0). Add and track individual creatives with rotation status.
Also included — printable PDF
→
Ad Spend Audit Reference PDF
All formulas, the 5 decision rules, and the creative rotation protocol in a print-ready format with fill-in-your-numbers fields. Tape it next to your monitor.
What the formulas look like
Break-Even ROAS = AOV ÷ (AOV − COGS − Processing − Refund Reserve)
Min Scalable ROAS = Break-Even ROAS × 1.3
Max Safe CPA = Gross Margin × 0.80
Max Weekly Spend = Bank Balance × 0.30
The 5 weekly decision rules
✗
ROAS below break-even for 3 days → Pause
Diagnose creative. Not the product.
✓
ROAS above 3.0× for 5 days → Scale +20%
Repeat every 3 days while above threshold.
✗
Refund rate above 13% → Freeze acquisition
Fix fulfillment before spending another dollar.
⚠
AOV below $60 → Audit bundle visibility
Usually a checkout change or mobile rendering issue.
⚠
CAC above $45 → Audit creative and audience
Top-of-funnel problem, not product page.
Who it's for
"I didn't realise my break-even ROAS was 2.1× — I'd been celebrating 1.8× as a win. The calculator showed me I'd been running at a loss for 6 weeks."
Illustrative scenario, not a customer quote. Media buyer, fashion accessories.
The upgrade path
Where this fits in the full system
$17 Ad Template ← you are here→$57 Ad Playbook→$147 Ad Command Center

Know your numbers before your next budget decision.

The operators who scale consistently are not the ones with the best instincts. They're the ones who check four numbers before touching a budget.

Get the Ad Spend Audit Template — $17 → Also: Profit Recovery Checklist — $9
30-day refund guarantee · Instant download · No subscription

Before you buy

Is this the right fit?

Who should skip it

Stores with no sales history yet, since the calculator needs real order values, costs and refund rates to be useful.

The cheaper or simpler path

Free: a spreadsheet dividing average order value by the contribution profit per order gives a rough break-even ROAS. The template adds the CPA limits, safety rules and refund adjustment in one place.

What is verified, and what is not

Checked on 16 October 2026: the $17 price, the 4-tab calculator, the printable PDF and the 30-day refund on this page. Slipper Digital has published no test of the template.

Buyer questions

What is the break-even ROAS formula?

Break-even ROAS is average order value divided by the profit an order makes before ad spend. Profit before ad spend is the order value minus product cost, shipping and packaging, payment fees and an allowance for refunds. At that ROAS the ads pay for themselves and nothing more; anything above it is profit.

Can you show a worked example?

An order of $60 with $18 product cost, $8 shipping and packaging and $2 payment fees leaves $32 before ads. Break-even ROAS is 60 divided by 32, about 1.88. Below 1.88 every sale loses money; a target ROAS needs headroom above it for the profit you want and for refunds.

What costs should be included?

Every cost that rises with each order: product cost, shipping and packaging, payment processing fees, discounts and expected refunds. Leaving any of them out makes the break-even figure look lower than it really is.

Before you buy

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