Campaign Inputs
Enter your funnel, revenue, margin, and cost assumptions. Results will appear above this form after calculation.
Formula Used
Sale Rate = (Click-to-Lead or Sale Rate ÷ 100) × (Lead-to-Sale Close Rate ÷ 100)
Net Revenue per Order = (Average Order Value + Upsell Revenue) × Repeat Purchase Multiplier × (1 − Refund Rate)
Contribution Profit per Order = (Net Revenue per Order × Gross Margin) − Variable Cost per Order
Break-Even CPC = (Sale Rate × Contribution Profit per Order) − (Monthly Fixed Marketing Costs ÷ Monthly Clicks)
Recommended CPC = Break-Even CPC × (1 − Safety Buffer)
The calculator treats break-even as zero-profit bidding after revenue retention, gross margin, variable order costs, and monthly fixed overhead are included.
How to Use This Calculator
- Enter expected monthly clicks for the campaign or ad group.
- Add your click-to-sale funnel rates. Use 100% close rate for direct sales funnels.
- Enter average order value, upsell value, gross margin, refunds, and variable costs.
- Add repeat purchase multiplier if customers buy again beyond the first order.
- Include fixed monthly overhead and your actual or planned CPC.
- Set a safety buffer if you want a more conservative bidding target.
- Press the calculate button to see the break-even CPC, recommended CPC, and projected profit.
- Use the CSV or PDF buttons after calculation to export the current scenario.
Example Data Table
| Monthly Clicks | Click-to-Sale Rate | AOV | Upsell | Gross Margin | Refund Rate | Variable Cost / Order | Repeat Multiplier | Fixed Costs | Actual CPC | Break-Even CPC | Recommended CPC | Monthly Profit |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12,000 | 8.50% | 120.00 | 18.00 | 62.00% | 6.00% | 11.00 | 1.35 | 900.00 | 4.25 | 8.22 | 6.99 | 47,627.15 |
This sample scenario illustrates how retained revenue, margin, refunds, and repeat value combine to produce a sustainable CPC threshold.
FAQs
What does break-even CPC mean?
Break-even CPC is the highest amount you can pay for one click while keeping profit at zero. Lower CPC usually creates profit. Higher CPC usually creates losses.
Why use gross margin instead of revenue alone?
Revenue can overstate what a click is worth. Gross margin converts revenue into usable contribution before ad cost, giving a more realistic bid ceiling.
When should lead-to-sale close rate stay at 100%?
Use 100% when a click directly becomes a sale, which is common in ecommerce. For lead generation, enter the percent of leads that actually close.
How do refunds and cancellations affect CPC?
Refunds reduce retained revenue per order. That lowers profit per click and pushes the break-even CPC downward, often more than advertisers expect.
Why include a repeat purchase multiplier?
Some campaigns acquire customers who buy again later. The multiplier captures expected future revenue value, which can justify a higher sustainable CPC.
What is the recommended CPC output?
Recommended CPC applies your safety buffer to the break-even figure. It leaves room for tracking errors, seasonal shifts, and normal conversion volatility.
Can break-even CPC be negative?
Yes. A negative value means the funnel loses money before ad clicks are paid for. In that case, fix pricing, margin, conversion, or operating costs first.
Is this calculator useful for both ecommerce and lead generation?
Yes. Ecommerce teams can use direct sales inputs, while lead-generation teams can split click-to-lead conversion and lead-to-sale close rate for better estimates.