Free tools for CS leaders and SaaS operators who care about one thing: growing and protecting recurring revenue while building a serious career.
Every calculator on this page comes from real work with B2B SaaS teams. No theory, no vanity metrics. Just the numbers you need to make calls on headcount, strategy and revenue.
Use them to support board decks, QBRs, hiring plans and your own career decisions.
Pick a calculator, plug in your numbers, then save the output for your next planning doc or leadership review.
See what you really spend to win each new customer.
Add your sales and marketing spend, then compare CAC against payback period and LTV. Useful for CS leaders who partner with Sales and Marketing on efficient growth and want to argue for better post-sale investment.
Measure long term revenue per account.
Estimate LTV using average revenue and retention patterns. Use it to show why keeping and growing customers through CS often beats net new logo spend and to connect your work directly to revenue quality.
Track how well you keep and grow existing revenue.
Input starting ARR, expansion, downsell and churn to see NRR in a few clicks. Great for CS teams that want to separate logo churn from revenue churn and explain what is really happening in the base.
See which forces are pushing your ARR forward or slowing it down.
Model how new business, expansion, contraction and churn work together. Use this when you need to explain to leadership why NRR is stalling even though new sales look strong.
Check if automation is creating real revenue, not just busy work.
Compare the cost of tech-touch programs with the expansion, retention and ticket reduction they drive. Helpful when you argue for CS tooling, in-app guidance or AI programs that scale outcomes without bloating headcount.
Score where each initiative really sits on the revenue ladder.
Rank projects across impact, speed, confidence, effort and risk. Use it with your leadership team to stop chasing low value ideas and focus on a short list that actually moves NRR and GRR.
Get real about ratios before your team burns out.
Map accounts, revenue bands and required activities per segment to see realistic CSM capacity. Use it in headcount requests to show why you need more people or sharper segmentation, not just hero work.
If you use any of these calculators for a board deck or a big internal presentation, you will get more value by pairing them with narrative and playbooks. That is exactly what the newsletter covers each week at TheCScafe.com.