Why Use the Cost-Plus Pricing Calculator?
Before setting consumer-facing prices, every SaaS company must know its financial floor. Selling subscriptions below your COGS floor guarantees negative unit economics and cash burn as customer account count grows.
This calculator tallies your direct variable costs — hosting, customer support, third-party APIs, and payment processing fees — to determine your exact required subscription price point.
Key Mathematical Formulas
1. Direct COGS per Customer
\[\text{Direct COGS} = \text{Hosting Cost} + \text{Support Cost} + \text{Licensing Cost}\]2. Required Monthly Price (incorporating Payment Gateway Fees)
\[\text{Net Target Margin Factor} = 1 - \text{Target Gross Margin \%} - \text{Payment Fee \%}\] \[\text{Required Price} = \frac{\text{Direct COGS}}{\text{Net Target Margin Factor}}\]3. Monthly Gross Profit
\[\text{Gross Profit per Customer} = \text{Required Price} \times (1 - \text{Payment Fee \%}) - \text{Direct COGS}\] \[\text{Total Monthly Gross Profit} = \text{Gross Profit per Customer} \times \text{Expected Customers}\]Real-World SaaS Gross Margin Standards
| Gross Margin Tier | Gross Margin % | Business Health / Evaluation |
|---|---|---|
| Poor / High COGS | Below 60% | Heavy human support or high AI API infrastructure cost |
| Acceptable | 60% – 74% | Standard hybrid SaaS / managed services |
| Healthy B2B SaaS | 75% – 84% | Benchmark standard for scalable software platforms |
| Best-in-Class | 85%+ | Pure software automation with minimal support overhead |
Step-by-Step Guide to Calculating Cost-Plus Prices
- Audit Monthly AWS / GCP Bills: Divide total monthly infrastructure spending by active account count.
- Calculate Support Cost per Ticket: Estimate support agent time spent per customer ticket multiplied by hourly rate.
- Add Third-Party API Metering: Include per-user API costs for Twilio, OpenAI, SendGrid, or infrastructure integrations.
- Set Required Target Margin: Plug in your target gross margin percentage (e.g. 75% or 80%) to generate the required price point.
Frequently Asked Questions
What is Cost-Plus pricing in B2B SaaS?
Cost-Plus pricing sets a product price by adding a fixed markup or target gross margin percentage onto direct Cost of Goods Sold (COGS).
What expenses are included in SaaS COGS?
SaaS COGS includes hosting infrastructure (AWS/GCP), database storage, customer support salaries, third-party API fees (Stripe/Twilio/OpenAI), and merchant processing fees.
What expenses are excluded from SaaS COGS?
Sales commissions, marketing ad spend, software R&D engineering salaries, administrative overhead, and legal fees are Operating Expenses (OpEx), not COGS.
Why is 75% to 85% considered the standard B2B SaaS gross margin?
A high gross margin (75%+) ensures sufficient gross profit dollars to reinvest in sales, marketing, and R&D engineering required for rapid software growth.
How does payment processing fee affect cost-plus calculations?
Because payment fees (e.g. 2.9% + $0.30) are charged on top of total gross revenue, they must be incorporated into the margin divisor formula.
What are the limitations of cost-plus pricing?
Cost-plus pricing ignores customer willingness to pay, competitor price points, and perceived software value, often underpricing highly valuable software.