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Understanding Your Marketing ROI: A Simple Guide

What Determines Profitability in Digital Advertising?

When investing in digital advertising, three key factors determine whether your campaign will be profitable:

  1. Your ROAS (Return on Ad Spend) – How much revenue your ads generate
  2. Your Gross Margin – The percentage of revenue that remains after product costs
  3. Your Total Marketing Investment – Ad spend plus agency fees

Breaking Down the Numbers: A Real Example

Let’s examine a typical scenario to understand what makes a campaign profitable:

The Investment

  • Ad Spend: £3,000
  • Agency Fee: £1,000
  • Total Investment: £4,000

The Return

  • ROAS: 5x (meaning each £1 spent on ads generates £5 in revenue)
  • Revenue Generated: £15,000 (£3,000 × 5)

The Profitability Analysis

If Your Gross Margin Is…Your Gross Profit Is…Your Net Profit Is…Your ROI Is…
27%£4,050£501.25%
30%£4,500£50012.5%
40%£6,000£2,00050%
50%£7,500£3,50087.5%

What This Means For Your Business

Let’s look at how each path to profitability affects your bottom line:

Path 1: Increasing ROAS (At 30% Margin)

If Your ROAS Is…Your Revenue Is…Your Gross Profit Is…Your Net Profit Is…
5x£15,000£4,500£500
6x£18,000£5,400£1,400
7x£21,000£6,300£2,300
8x£24,000£7,200£3,200

Path 2: Higher Margins (At 5x ROAS)

If Your Gross Margin Is…Your Gross Profit Is…Your Net Profit Is…
27%£4,050£50
30%£4,500£500
40%£6,000£2,000
50%£7,500£3,500

Path 3: Customer Lifetime Value

If a customer makes repeat purchases over time:

  • First purchase: £500 net profit (at 30% margin)
  • Second purchase: Typically much more profitable (no acquisition cost)
  • Third+ purchases: Continue to build profitability

For example, if your average customer makes 3 purchases of equal value over time:

  • Initial £15,000 in revenue → £500 net profit
  • Additional £30,000 in revenue over time → £9,000+ in additional profit (at 30% margin)
  • Total relationship value: £9,500+ in profit

Three Paths to Profitability

There are three main ways to make your digital advertising investment profitable:

1. Increasing Your ROAS

Improving the performance of your advertising by:

  • Better targeting and audience selection
  • More compelling ad creative and messaging
  • Optimised landing pages and conversion paths
  • Strategic bidding and budget allocation

2. Working with Higher Margins

Focusing on products or services with better profit margins:

  • Premium offerings with higher margins
  • Strategic pricing adjustments
  • Cost reduction in product delivery
  • Upselling and cross-selling higher margin items

3. Maximising Customer Lifetime Value (LTV)

Looking beyond the initial purchase to the total customer relationship:

  • Email marketing to encourage repeat purchases
  • Loyalty programmes to increase retention
  • Subscription models for recurring revenue
  • Cross-selling and upselling strategies

Finding Your Sweet Spot

Every business has different metrics that make advertising profitable. We’ll work with you to:

  1. Understand your specific margins and business model
  2. Target the ROAS needed for your campaign to be profitable
  3. Optimise campaigns to exceed the break-even point
  4. Track long-term customer value beyond the initial purchase

Ready to Calculate Your Potential ROI?

Contact us today to discuss your specific business metrics and how we can build a digital advertising strategy that delivers measurable returns for your business.

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