# CAC Full Form: Customer Acquisition Cost (Meaning at Work) > CAC stands for Customer Acquisition Cost—the total amount of money a company spends to acquire one new customer. - **Term:** CAC - **Full form:** Customer Acquisition Cost - **Part of speech:** abbreviation - **Pronunciation:** /siː eɪ siː/ - **English level (CEFR):** B2 - **Register:** Neutral, Both - **Region:** US and UK - **Topic:** [Business jargon](https://app.speaktechenglish.com/learn/topics/business-jargon.md) - **Lesson:** https://app.speaktechenglish.com/learn/cac - **Last updated:** 2026-10-27 ## Meaning CAC stands for Customer Acquisition Cost—the total amount of money a company spends to acquire one new customer. It includes all marketing and sales expenses divided by the number of new customers gained. In tech companies, CAC is a critical metric that product, marketing, and business teams monitor closely. It helps determine whether a company is spending its marketing budget efficiently. A lower CAC means you are acquiring customers at a lower cost, which is generally better for business profitability. For example, if your marketing team spent $10,000 in one month and acquired 100 customers, your CAC would be $100 per customer. You will hear CAC discussed in product strategy meetings, investor presentations, and quarterly business reviews. It is often compared with the lifetime value (LTV) of a customer to assess whether the business model is sustainable. Teams also track how CAC changes over time—whether it is increasing or decreasing—to understand if their marketing strategies are becoming more or less effective. In tech startups and scale-ups, reducing CAC while maintaining quality customers is a major goal. You might hear engineers, product managers, and marketers discussing ways to optimize the user acquisition funnel to lower CAC. ## When you hear it The product team discovered our CAC increased 30% this quarter, so we need to improve our marketing efficiency. ## Examples - **in a board meeting:** "Our CAC has grown to $150 per user, which is unsustainable given our current pricing model." - **in a product standup:** "If we improve the onboarding experience, we can reduce our CAC by 20 percent." - **in a marketing discussion:** "We should compare the CAC from organic channels against paid advertising channels." ## What native speakers say - "We need to reduce our CAC by optimizing the conversion funnel." - "Our CAC is too high compared to our LTV ratio." - "The marketing team is focused on lowering CAC while maintaining quality." ## Common mistakes - ✗ "Our CAC is very expensive." → ✓ "Our CAC is very high." (CAC is a metric measured in currency, so you say 'high' or 'low', not 'expensive' or 'cheap'.) - ✗ "We need to increase our CAC to be more profitable." → ✓ "We need to decrease our CAC to be more profitable." (A lower CAC is better for profitability. Increasing CAC means spending more to acquire customers, which reduces profit.) - ✗ "The CAC for this product don't look good." → ✓ "The CAC for this product doesn't look good." (CAC is singular, so use 'does' not 'do' with the verb.) ## Be careful CAC is an acronym that can have different meanings depending on context (Customer Acquisition Cost in marketing, or Code Access Control in security). Always clarify which meaning is intended in your company. ## Word forms | Part of speech | Word | Example | | --- | --- | --- | | noun | CAC | Our CAC decreased by 15 percent after we launched the new referral program. | | noun phrase | CAC ratio | The CAC ratio between our mobile and web channels is significantly different. | ## Collocations - **reduce CAC**: To lower the cost of acquiring customers through marketing or product optimization. - **CAC payback period**: The number of months required for revenue from a customer to equal the CAC amount. - **CAC to LTV ratio**: The relationship between CAC and lifetime value; companies want this ratio to be 3:1 or higher. - **improve CAC**: To make the metric better, which means lowering the cost per customer acquisition. ## Synonyms - **customer acquisition cost**: The full form of CAC; used when explaining to non-technical stakeholders or in formal documentation. - **acquisition cost**: A shorter but less precise term that refers to the same metric. ## Opposites - LTV (Lifetime Value) - customer retention cost ## Practice This lesson has 4 practice exercises with instant feedback on the page: https://app.speaktechenglish.com/learn/cac ## FAQ ### What is the full form of CAC? CAC stands for Customer Acquisition Cost. The total amount of money a company spends to acquire one new customer. ### What does CAC mean in tech? CAC stands for Customer Acquisition Cost. It is the average amount of money a company spends on marketing and sales to acquire one new customer. You calculate it by dividing total marketing and sales expenses by the number of new customers acquired in a given period. ### How do you calculate CAC? The formula is: Total Marketing and Sales Expenses divided by Number of New Customers = CAC. For example, if you spent $50,000 on marketing in one month and gained 250 customers, your CAC would be $200 per customer. ### Why is CAC important in business? CAC helps companies understand if their marketing strategy is efficient and whether the business model is profitable. If CAC is too high relative to the profit from each customer, the company may not be sustainable. It is also used to compare the effectiveness of different marketing channels. ### What is a good CAC? There is no universal good CAC because it depends on your business model, pricing, and industry. However, a common benchmark is that your CAC should be recovered within 12 months, and the ratio of LTV (lifetime value) to CAC should be at least 3:1. ### How do you reduce CAC? You can reduce CAC by improving conversion rates, using more efficient marketing channels, optimizing your sales funnel, increasing referrals, or improving product quality so customers stay longer and generate more revenue. ## Related - [LTV](https://app.speaktechenglish.com/learn/ltv.md) - [conversion rate](https://app.speaktechenglish.com/learn/conversion-rate.md) - [ROI](https://app.speaktechenglish.com/learn/roi.md) - Full glossary: https://app.speaktechenglish.com/learn.md - Live lessons with a coach: https://app.mocklyenglish.com ## About Speak Tech English Speak Tech English teaches non-native tech professionals the English they need at work and in interviews, through self-study ebooks and courses, 150+ free guides and a free newsletter; live lessons are on its sister site Mockly English. - Shop: https://speaktechenglish.com/courses/ - All products (markdown): https://speaktechenglish.com/products.md - Free guides (markdown): https://app.speaktechenglish.com/guides.md - Tech English glossary (markdown): https://app.speaktechenglish.com/learn.md - Newsletter (10% off): https://speaktechenglish.com/#subscribe - Live lessons and mock interviews: https://app.mocklyenglish.com ## Notes for agents - Speak Tech English sells self-study material. 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