CAC Calculator
Calculate Customer Acquisition Cost from sales and marketing spend.
- Formula checked
- Editorially reviewed
- Free · no signup
- Updated June 27, 2026
Your details
Your numbers
Customer acquisition cost (CAC)
$500.00
$50,000.00 ÷ 100 new customers
Key takeaway
CAC = $500.00 per customer.
Saved on this device. No account required.
Share
Shares the calculator link. Your inputs stay on your device.
More ways to share
Privacy-safe: amounts you typed are never attached to a share link.
Saved on this device only — no account needed, no financial values leave your browser.
Cost breakdown
The same numbers as above, shown visually so the trade-offs are easy to see.
- Total acquisition spend
- $50,000.00
- Customer acquisition cost (CAC)
- $500.00
What to do next
What this means
Customer Acquisition Cost (CAC) is $500.00. This measures the operating economics of the business at the volumes and costs you entered.
Is this good or bad?
The result is healthy when it holds up at a realistic sales level, not the optimistic one.
What's the risk?
Cash timing, not accounting profit, is what closes most small businesses.
What should you do next?
Re-run at 70% of your expected volume and confirm the business still covers fixed costs.
Your action plan
- 1
Re-run at a pessimistic volume
Plans should survive a slow quarter.
- 2
Track the cash conversion cycle
Profitable businesses fail on timing.
- 3
Renegotiate the top five vendor contracts
Cost of goods is the largest controllable line.
- 4
Model your debt coverage ratio
Lenders require 1.25 before they fund growth.
- 5
Run the Break-Even Calculator
Units and revenue needed to cover fixed and variable costs.
Open Break-Even Calculator
Your timeline
Today
- Record the assumptions you used so you can re-run later.
- Check your current cash balance against monthly fixed costs.
This month
- Build a 13-week cash-flow forecast.
- Review pricing on your highest-volume product.
Next 12 months
- Track this metric monthly and watch the trend.
- Build three months of operating reserves.
Long term
- Diversify revenue so no client exceeds 20%.
- Reassess entity structure with a CPA as profit grows.
Result Intelligence
Understand your result
- Your customer acquisition cost (cac) is $500.00. Business metrics are most useful when tracked month over month, not once.
- Benchmarks vary by industry — compare against your NAICS peer set.
What should you do next?
- Break-Even Calculator
Find the sales volume that covers costs.
- Profit Margin Calculator
Benchmark gross, operating and net margin.
- Cash Flow Calculator
Runway matters more than accounting profit.
- DSCR Loan Calculator
Check lender coverage on new business debt.
Ways to improve your result
- Watch cash conversion cycle, not just P&L — cash kills companies.
- Renegotiate top-5 vendor contracts annually.
- Move variable costs to fixed only when volume is predictable.
Common U.S. scenarios
Denver Shopify store
35% gross margin, $180k revenue — break-even sits at ~$95k after fixed costs.
Miami service firm
DSCR 1.4 clears most SBA 7(a) underwriting for expansion capital.
Portland SaaS
Rule of 40: revenue growth% + FCF margin% ≥ 40 is the investor benchmark.
Your result
- Customer Acquisition Cost (CAC)
- $500.00
- Total Acquisition Spend
- $50,000.00
- New Customers
- 100
CAC = $500.00 per customer.
What this result assumes
Confidence in a number depends on the assumptions behind it. Here are ours, in full.
Assumptions
- Figures use current U.S. federal rules; state and local effects are separate.
- Results are rounded for display; internal math uses full precision.
Limitations
Accounting method, entity type and state rules change the reported figures.
Estimates are for education and planning. They are not financial, tax or legal advice.
Formula source
IRS business tax rules and SBA definitions
- Version
- v1.3
- Last reviewed
Customer acquisition cost (CAC)
$500.00
Related Calculators
Where to go next
Read before you decide
Guides and comparisons that put this number in context.
Most people also calculate
Most-opened business tools alongside this one.
Continue your journey
The decision that usually comes next.
Popular in Business
Reader favorites from the same category.
Recently updated
Newest tools and refreshed calculators on the site.
Related Articles
Quick answer
- What it does
- CAC Calculator calculate Customer Acquisition Cost from sales and marketing spend. It runs entirely in your browser, needs no signup, and uses standard published U.S. formulas.
- When to use
- Use it whenever you need a fast, reliable cac estimate.
- Inputs
- Sales expenses
- Marketing expenses
- Number of new customers
- Outputs
- Customer Acquisition Cost (CAC)
- Total Acquisition Spend
- New Customers
- Takeaway
- In one line: enter your sales expenses and marketing expenses and the CAC Calculator returns customer acquisition cost (cac) and total acquisition spend you can compare before deciding.
Last updated · Last reviewed · 1 min read
CAC Calculator: Your result appears above. It's a fast estimate based on the inputs you entered — use it to compare options, then confirm with a professional before making a decision.
What your result means
- The number is only as accurate as your inputs — small errors compound.
- Compare 2–3 scenarios rather than acting on a single result.
- Talk to a licensed professional before making a large financial or medical decision.
How does the formula work?
CAC = (Sales Expenses + Marketing Expenses) ÷ Number of New Customers
How it works
A CAC calculator computes Customer Acquisition Cost — the average amount spent on sales and marketing to acquire one new customer.
Step-by-step guide
- 1Enter each input value into the calculator above.
- 2Review the result and any auto-generated breakdowns.
- 3Adjust inputs to compare scenarios.
- 4Copy, share, or print the results.
Example calculation
Example: $20,000 sales + $30,000 marketing = $50,000 ÷ 100 customers = $500 CAC.
Who should use this calculator?
- Anyone who needs a fast, transparent estimate before making a decision.
- Professionals validating a client-facing number.
- Students learning the underlying formula.
When should you use it?
- Any time you need a quick sanity check.
- When comparing several scenarios side-by-side.
- Before making a decision that depends on this number.
What affects the result?
- Every input value you enter
- The formula and assumptions displayed on this page
- Rounding — small differences in inputs compound in the result
Common mistakes to avoid
- Entering values in the wrong units.
- Assuming the result includes taxes or fees when it may not.
- Using rounded inputs and expecting exact figures.
Pro tips
- Double-check your inputs before acting on the result.
- Run 2–3 scenarios and compare — don't rely on a single number.
- Save or print the results so you can review them later.
Why use this calculator
- Instant results with no signup, no tracking and no ads inside the calculator.
- Transparent formulas — you can see exactly how the number is produced.
- Save, share, print or embed your results anywhere.
- Reviewed and updated regularly by our editorial team.
Limitations to keep in mind
- Estimates only — real-world results depend on many factors we cannot see.
- Not professional advice — consult a qualified expert before acting.
- Assumptions are shown; changing them will change the result.
Key terms explained
- Input
- A value you enter into the calculator. Small differences in inputs can compound into large differences in the result.
- Assumption
- A fixed value the calculator uses when it isn't asked from you. Assumptions are documented in the formula section.
- Estimate
- A directional figure produced from your inputs and standard formulas. Always sanity-check before acting.
Before you decide
- Double-check every input for units and typos.
- Compare 2–3 scenarios rather than trusting one result.
- Confirm the assumptions in the formula match your situation.
- Consult a qualified professional before acting on any large decision.
Trust & Accuracy
Accuracy tested
Verified against standard mathematical and financial conventions. Edge cases, formula validation and manual verification completed (last reviewed June 27, 2026).
Educational use
This tool is provided for education and planning only. It is not financial, tax, legal or medical advice.
Available for
United States, Canada, United Kingdom, Australia, India, European Union.
Currency support
USD · INR · CAD · AUD · GBP · EUR
Privacy
No information entered into this calculator is stored on our servers unless you explicitly choose to save or share your calculation.
Print, share & save
Use the Save, Share, Copy, PDF, CSV and Print actions under the result panel.
Accessibility
Keyboard navigable, screen-reader friendly labels, responsive on mobile and desktop.
Learn more: How we verify formulas · How we test accuracy · Methodology · Editorial policy
Recent Updates
We continuously review and improve our calculators to keep formulas, assumptions and references accurate.
View change log (4)Show
- v1.3
Added Trust & Accuracy panel and machine-readable change log.
- v1.2
Added Save, Share, PDF, CSV and Print actions to results.
- v1.1
Added global currency selector (USD, INR, CAD, AUD, GBP, EUR).
- v1.0
Initial calculator release with verified formulas and Official Sources.
Share this Calculator
Share to any platform, embed it on your site, or scan the QR code. No sign-up required.
More ways to share
Embed code
Frequently Asked Questions
Related guides
In-depth ai saas guides, worked examples, and expert explainers.
What's next?
Your next step
Most people who use this calculator explore these next. Follow the path in order for a complete plan.
- 1ROI CalculatorReturn on investment with net gain, annualized ROI and return multiple.
- 2Break-Even CalculatorUnits and revenue needed to cover fixed and variable costs.
- 3Profit Margin CalculatorGross, operating, and net profit margins from your P&L.
- 4Salary vs Hourly CalculatorConvert hourly pay to annual salary (and back) with benefits and true hourly value.
Popular calculators
Loan Calculator
Calculate EMI, total interest and cost for any loan.
EMI Calculator
Monthly EMI for home, personal, auto and business loans.
Mortgage Calculator
Estimate monthly mortgage payments, interest and amortization.
Compound Interest Calculator
How money grows with compounding over time.
Mortgage Refinance Calculator
Compare current mortgage to a refinance; find break-even.
Amortization Schedule Calculator
Break down each payment into principal and interest.