What CAC:CLV ratio should I show in my EXIST application?

Aim for at least 3:1 (CLV is three times your CAC). Below 1:1 signals the business model doesn't scale. Reviewers care less about the exact number than whether you understand the concept and can explain your assumptions.

Do I need a separate cost breakdown for every channel?

Not per line item, but the application should make clear which channels you plan, what you expect to spend on each, and how you arrived at those numbers. A summary table with three to five channels is usually sufficient.

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Marketing & sales costs for the EXIST application: how to calculate CAC and CLV

How to project your annual marketing and sales spend per channel – with formulas, benchmarks, and a worked example.

EXIST

Financials

CAC

Marketing

Julia YukovichCo-Founder + CEO

·February 10, 2026·

2 min read

On this page

1. Forecast your sales volume 2. Customer acquisition channels 3. Calculating annual costs and CLV 4. Industry benchmarks for CAC 5. Worked example – Year 3

Key takeaways

Annual cost per channel = planned sales volume × CAC. Sum the channels to get your total marketing & sales spend.

CLV = average annual revenue × relationship duration × contribution margin. A CLV:CAC ratio above 3:1 signals a healthy growth model.

Use industry benchmarks as starting values – SaaS B2B CAC is €150–1,200; e-commerce €20–80.

1. Forecast your sales volume

Before you calculate costs you need to estimate the expected sales closings per year. Scale up historical data if available, draw on market research studies, or model scenarios. Build at least three scenarios – conservative, realistic, optimistic. For the EXIST application you can present one scenario while noting the range.

Megaphone — Shout your idea into the world – but don't forget to calculate how much that costs.

2. Customer acquisition channels

The most common acquisition channels for early-stage startups are: referral & repeat purchases (often zero additional CAC), events and trade shows (direct contact, live demos, networking), digital advertising (LinkedIn, Google Ads, SEO, programmatic), and cold outreach / mailings (email campaigns, inside sales, direct mail). For B2B, trade shows, LinkedIn, and referral programmes are often more effective than pure social media campaigns.

Pick channels based on where your target audience actually spends time.

For B2B: trade shows and LinkedIn often outperform social media ads.

Look at where competitors show up – that's where your target buyers likely are.

3. Calculating annual costs and CLV

For each channel: annual cost K = planned sales volume V × CAC. The sum across all channels is your total marketing & sales spend. CAC components include software licences (CRM, outreach tools), staff costs, agency fees, travel, and content creation.

You can also calculate the Customer Lifetime Value: CLV = average annual revenue per customer U × average relationship duration D × contribution margin DB. Example: U = €500, D = 3 years, DB = 0.8 → CLV = €1,200. A CLV of €1,200 versus a CAC of €200 means each customer returns six times the acquisition cost – a strong argument for a scalable growth strategy.

4. Industry benchmarks for CAC

Published benchmarks: SaaS B2B €150–1,200 (Gartner / Hockeystack), e-commerce €20–80 (Shopify), consulting & services €200–500, consumer products €10–50 (eMarketer). If no benchmark matches your vertical, use your own pilot data and label it as 'early pilot CAC, expected to improve with scale'.

5. Worked example – Year 3

Assume: 400 sales via referrals (CAC €0, total €0), 500 via trade shows (CAC €500, total €250,000), 1,000 via digital ads (CAC €4.45, total €4,450), 600 via cold outreach (CAC €8, total €4,800). Grand total for Year 3: 2,500 customers, €259,250 marketing & sales spend. Show a ±20% sensitivity analysis to demonstrate your assumptions are stress-tested.

Example Excel sheet for marketing cost calculation — This is what your finished Excel sheet for the calculation could look like.

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Written by

Julia Yukovich

Co-Founder + CEO

Julia is one of the Co-Founders. She handles design, product direction, and most of the support replies that arrive in the morning.

julia.yukovich at aicuflow dot comLinkedIn