QuadraPay — Merchant Services Reseller
Estimation Tool Only. CAC figures depend on accurate attribution and cost data. Results are illustrative based on your inputs. Full disclaimer ↓
Tool #15 · Marketing Finance

Customer Acquisition
Cost (CAC) Calculator

Calculate your CAC by marketing channel, blended CAC, LTV:CAC ratio, payback period, and true marketing ROI — then benchmark against industry standards to see where you stand.

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CAC Calculator — By Channel & Blended

Channel CAC · Blended CAC · LTV:CAC ratio · Payback period · Marketing ROI

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Paid Search (Google / Bing Ads)
Monthly spend on search advertising
$
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Paid Social (Meta / TikTok / LinkedIn)
Monthly spend on social advertising
$
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Email Marketing
Monthly email platform & campaign cost
$
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Content / SEO / Organic
Content creation, SEO tools, writers
$
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Affiliates / Referrals / Partnerships
Commission payments, referral fees
$
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Other Channels (Events, PR, etc.)
Any other customer acquisition spend
$
← Monthly spend per channel     New customers attributed per channel →
$
Total monthly payroll for sales & marketing staff.
$
CRM, analytics, automation tools (not already in channel spend).
$
Annual revenue per customer — or MRR × 12 for subscriptions.
%
Your gross margin % after COGS (including processing fees).
yrs
Average how long a customer stays before churning.
Blended Customer Acquisition Cost
Customer LTV
Gross profit per customer
LTV:CAC Ratio
CAC Payback Period
Months to recover CAC
📊 LTV:CAC Health Gauge
Under 1:11–2:13:1 (target)5:1+
LTV:CAC Ratio
Channel Monthly Spend New Customers CAC % of Spend Rating
⏱️ CAC Payback Period
0 months 12 months 24+ months
Payback (months)
Marketing ROI
Profit per customer
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What This Calculator Does

It calculates your CAC per marketing channel, blended CAC across all channels, customer lifetime value (LTV), LTV:CAC ratio with a visual health gauge, CAC payback period in months, and total marketing ROI — with a channel comparison table showing your best and worst-performing acquisition sources.

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How to Use It

Enter your monthly spend and new customers attributed for each active marketing channel. Add sales & marketing team overhead separately. Enter your average revenue per customer per year, gross margin, and average customer lifespan. Select your industry for benchmark comparison.

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What to Expect

An LTV:CAC ratio above 3:1 is the standard benchmark for healthy unit economics. A payback period under 12 months is generally sustainable. Note that payment processing fees reduce your gross margin — and therefore reduce LTV and worsen LTV:CAC. Lower processing rates directly improve this ratio.

CAC, LTV & Marketing ROI — The Complete Guide

Customer Acquisition Cost (CAC) and Lifetime Value (LTV) are the two most important numbers in growth marketing. Together, they determine whether your business model is economically sustainable — whether each customer you acquire generates more value than it cost to win them.

The Core Formulas

CAC (Blended) = (Total Marketing + Sales Spend) ÷ New Customers Acquired CAC (by Channel) = Channel Spend ÷ Customers from that Channel LTV = Avg Revenue per Customer per Year × Avg Customer Lifespan × Gross Margin % LTV:CAC Ratio = LTV ÷ CAC CAC Payback (months) = CAC ÷ (Monthly Revenue per Customer × Gross Margin %) Marketing ROI = ((LTV − CAC) ÷ CAC) × 100

LTV:CAC Benchmarks by Stage

LTV:CAC RatioWhat It MeansAction RequiredRating
Below 1:1Losing money on every customer acquiredStop growing — fix unit economics first🚨 Critical
1:1 – 2:1Barely recovering acquisition costReduce CAC or improve margins urgently⚠️ Poor
3:1The standard benchmark — healthyScale carefully, monitor payback period✅ Good
4:1 – 5:1Strong unit economics — scale confidentlyInvest more in best-performing channels✅ Strong
Above 5:1Exceptional — potentially under-investingConsider increasing marketing spend to grow faster🚀 Exceptional

Industry CAC Benchmarks

IndustryTypical CAC RangeTarget LTV:CACPayback Target
SaaS / B2B Software$300 – $5,000+3:1 – 5:112–18 months
eCommerce$20 – $1503:1+3–12 months
Consumer Subscription$30 – $2003:1+6–12 months
Supplements / Nutra$30 – $1203:1+3–9 months
Fintech$200 – $1,5004:1+12–24 months
Online Gaming$10 – $1003:1+3–12 months
Professional Services$500 – $5,0005:1+3–12 months

How Processing Fees Affect CAC & LTV:CAC

Payment processing fees reduce your gross margin, which directly reduces LTV. For a business with $100 average order value and 50% gross margin, the LTV per customer-year is $50. If processing fees are 3% ($3 per order), the effective gross margin drops slightly — but across a customer lifetime of multiple orders, this compounds significantly.

Reducing processing fees from 3% to 1.5% on a subscription business with 2-year average lifespan can improve LTV by 2–4%, directly improving the LTV:CAC ratio without changing CAC at all. This is why processing cost optimisation is a genuine unit economics lever, not just a cost saving.

💡 QuadraPay Tip: QuadraPay is a merchant services reseller with 45+ acquiring partners globally. Reducing your processing rate by 1% on a business with $200K monthly revenue is $2,000/month recovered — which flows directly into gross margin and improves LTV:CAC. For high-risk merchants paying 4–5%, this improvement can be dramatic. Get a free rate comparison →

Improve Your LTV:CAC via QuadraPay's Network

QuadraPay is a merchant services consultancy and reseller — not a processor. We connect businesses to the right acquiring partner from our global network of 45+ banks across 32 countries, reducing processing costs that suppress your gross margin and worsen LTV:CAC.

45+
Partners
32
Countries
200+
Industries
8yr+
Since 2016
Lower processing rates improve gross margin & LTV directly
eCheck/ACH from 0.5% — dramatically improves unit economics
High-risk accounts — supplements, gaming, fintech
Interchange-plus pricing for per-transaction cost clarity
Subscription billing specialists — improve subscription LTV
Multi-currency acquiring — reduce FX costs on international CAC

Frequently Asked Questions

What should be included in CAC calculation?
CAC should include all spending directly related to acquiring customers: advertising spend (paid search, paid social, display), sales team salaries and commissions, marketing team salaries, content creation costs, marketing software and tools, events and sponsorships, and affiliate/referral fees. It should NOT include costs for servicing existing customers (customer success, support). Many founders undercount CAC by forgetting to include staff costs and overheads — leading to overly optimistic unit economics.
What is a good LTV:CAC ratio?
The standard benchmark is 3:1 — meaning for every $1 spent acquiring a customer, you get $3 of lifetime value. Below 2:1, the business is struggling with unit economics. Above 5:1, the business may actually be under-investing in growth — it could afford to spend more on marketing and still be profitable. The target varies by industry: SaaS typically aims for 3:1–5:1, eCommerce often targets 3:1+, and high-ticket B2B services may target 5:1–10:1.
What is CAC payback period and why does it matter?
CAC payback period is how many months of gross profit from a customer it takes to recover the cost of acquiring them. A 12-month payback means you break even on each customer after one year — everything after that is profit. Shorter payback periods mean faster cash recovery and better capital efficiency. For subscription businesses, 6–12 months is typically healthy. For eCommerce, 3–6 months is ideal. Very long payback periods (18+ months) put pressure on working capital and make growth capital-intensive.
How do payment processing fees affect LTV and LTV:CAC?
Processing fees are deducted from revenue before gross margin is calculated. A higher processing rate means lower gross margin, which means lower LTV per customer. For example: if you charge $100/month and have 3% processing, you lose $3/month to processing. At 1.5%, you lose $1.50 — a $1.50/month improvement per customer. Over a 2-year customer lifespan, that's $36 extra LTV per customer. At 1,000 customers, that's $36,000 in additional lifetime value — just from a processing rate negotiation.
Are the CAC and LTV figures in this calculator accurate?
The calculations are mathematically correct based on your inputs. However, CAC accuracy depends entirely on your ability to accurately attribute customers to channels — which is notoriously difficult in multi-touch marketing environments. LTV depends on accurate churn and margin data. Use this tool as a directional estimate, not a precise accounting. For accurate unit economics, use proper marketing attribution tools and consult a financial analyst. See the full disclaimer below.