Introduction: Why Metrics Matter for Solo Founders
Building a SaaS business as an indie hacker or solo founder is challenging. You don’t have a team of analysts or a board to help you make decisions. Every choice—from pricing to product features to marketing spend—falls on your shoulders.
This is where SaaS metrics become your secret weapon. The right metrics tell you what’s working, what’s broken, and where to focus your limited time and energy. Ignore them, and you’ll be flying blind. Master them, and you’ll make smarter decisions, spot problems before they become fatal, and build a business that’s genuinely profitable.
In this guide, we’ll cover the essential SaaS metrics every indie hacker should track, what they mean, how to calculate them, and what numbers you should aim for.
The Foundation: Understanding Recurring Revenue
Monthly Recurring Revenue (MRR)
MRR is the heartbeat of any SaaS business. It represents the predictable revenue you expect to receive each month from your subscribers.
How to calculate MRR:
MRR = Number of paying customers × Average revenue per user (ARPU) per month
For example, if you have 100 customers paying $29/month, your MRR is $2,900.
Types of MRR to track:
- New MRR: Revenue from new customers acquired during the month
- Expansion MRR: Additional revenue from existing customers upgrading or adding seats
- Churned MRR: Revenue lost from customers who cancelled or downgraded
- Net MRR: New MRR + Expansion MRR - Churned MRR
Annual Recurring Revenue (ARR)
ARR is simply MRR multiplied by 12. It’s useful for presenting a bigger picture to yourself and others, and many SaaS tools and investors think in annual terms.
ARR = MRR × 12
For solo founders, tracking both MRR and ARR helps you think long-term while staying focused on monthly progress.
Customer Metrics: Understanding Your Users
Customer Lifetime Value (LTV)
LTV tells you how much revenue a typical customer generates over their entire relationship with your business. This is critical for understanding how much you can afford to spend acquiring customers.
How to calculate LTV:
LTV = ARPU × Gross Margin % / Churn Rate
Or, more simply:
LTV = Average monthly revenue per customer / Monthly churn rate
If your average customer pays $30/month and your monthly churn rate is 5%, their LTV is $30 / 0.05 = $600.
What is a good LTV?
- For bootstrapped businesses: Aim for LTV at least 3x your CAC (Customer Acquisition Cost)
- For venture-backed businesses: LTV should be at least 3-5x CAC
Customer Acquisition Cost (CAC)
CAC measures how much it costs you to acquire a new paying customer. This includes all marketing and sales expenses.
How to calculate CAC:
CAC = Total marketing and sales expenses / Number of new customers acquired
If you spent $1,000 on advertising and got 10 new customers, your CAC is $100.
What is a good CAC?
- The lower, the better. A healthy SaaS business has a CAC payback period of under 12 months
- CAC payback period = CAC / ARPU
Monthly Recurring Revenue Per User (MRPU)
Also called ARPU (Average Revenue Per User), this metric shows the average revenue generated per customer per month.
How to calculate ARPU:
ARPU = Total MRR / Total number of paying customers
Churn Metrics: The Silent Killer
Customer Churn Rate
Churn is the percentage of customers who cancel their subscription in a given period. It’s one of the most important metrics because small increases in churn have massive long-term effects.
How to calculate customer churn rate:
Monthly Churn Rate = (Customers who cancelled during month / Total customers at start of month) × 100
If you started with 100 customers and 5 cancelled, your churn rate is 5%.
What is a good churn rate?
- For B2B SaaS: 3-5% monthly churn is acceptable, under 3% is excellent
- For B2C SaaS: 5-7% monthly churn is typical
- Remember: Reducing churn from 5% to 3% can double your revenue over time
Revenue Churn Rate
Revenue churn measures the percentage of recurring revenue lost, not just customers. This matters more if you have enterprise customers with varying contract sizes.
How to calculate revenue churn:
Revenue Churn = (MRR lost from churned customers / Total MRR at start of month) × 100
Growth Metrics: Measuring Progress
Net Revenue Retention (NRR)
NRR measures the revenue you’re retaining from existing customers, including expansions, downgrades, and churn. Over 100% means you’re growing from existing customers.
How to calculate NRR:
NRR = (MRR at end of month + Expansion MRR - Churned MRR - Downgrade MRR) / MRR at start of month × 100
What is a good NRR?
- Over 100%: Excellent—you’re growing from your existing customer base
- 100%: Stable—you’re only growing from new customers
- Under 100%: Warning sign—you’re losing revenue from existing customers
Quick Ratio
Quick ratio measures your company’s growth efficiency by comparing new and expanded revenue to churned and contraction revenue.
How to calculate quick ratio:
Quick Ratio = (New MRR + Expansion MRR) / (Churned MRR + Contraction MRR)
What is a good quick ratio?
- 4+: Excellent growth efficiency
- 2-4: Healthy growth
- Under 2: Slow growth, investigate why
Burn Rate and Runway
If you’re not yet profitable, you need to track how quickly you’re spending money and how long until you run out.
How to calculate runway:
Runway = Cash in bank / Monthly burn rate
If you have $30,000 and burn $3,000/month, you have 10 months of runway.
Product Metrics: Is Your Product Working?
Activation Rate
Activation rate measures the percentage of users who reach a key “aha” moment in your product. This predicts whether they’ll become paying customers.
How to calculate activation rate:
Activation Rate = (Users who completed key action / Total signups) × 100
For example, if 40 out of 100 signups create their first project within 7 days, your activation rate is 40%.
Time to Value (TTV)
TTV measures how long it takes for a new user to get value from your product. The shorter the TTV, the more likely they are to convert and stay.
Product Qualified Leads (PQLs)
PQLs are users who have engaged with your product enough to be considered sales-ready. They come from your product usage, not marketing campaigns.
Building Your Metrics Dashboard
Essential Tools for Tracking SaaS Metrics
- Baremetrics: Provides MRR, churn, LTV, and other key metrics with beautiful dashboards
- ProfitWell: Free metrics tracking for startups under $1M ARR
- ChartMogul: Revenue analytics platform with good API integrations
- Mixpanel: Product analytics for activation and engagement tracking
- Google Analytics: For traffic and funnel analysis
What to Track Daily, Weekly, and Monthly
Daily:
- New signups
- New paying customers
- Daily revenue
Weekly:
- MRR movement (new, expansion, churn)
- Activation rate
- Top traffic sources
Monthly:
- Full P&L
- Customer churn rate
- Revenue churn rate
- LTV and CAC
- NRR
- Burn rate and runway (if applicable)
Common Pitfalls: Mistakes Indie Hackers Make
Mistake #1: Ignoring Churn
Many founders focus only on growth and ignore churn. A 5% monthly churn means you lose half your customers within a year. Fix churn first, then scale acquisition.
Mistake #2: Vanity Metrics
Page views, signups, and social followers don’t pay the bills. Focus on revenue, not vanity.
Mistake #3: Not Tracking CAC
If you don’t know what you’re spending to acquire customers, you can’t optimize. You might be losing money on every customer and not even know it.
Mistake #4: Confusing Revenue with Profit
A $10K MRR business can still be unprofitable if your costs are high. Track profitability, not just revenue.
Mistake #5: Tracking Too Many Metrics
Pick 5-7 key metrics and focus on those. More metrics means less focus.
Conclusion: Metrics Are Your Compass
As an indie hacker, you don’t have time to waste on the wrong things. SaaS metrics give you the clarity to make better decisions, spot problems early, and build a business that actually makes money.
Start simple: Track MRR, churn, and your conversion rate. As you grow, add more metrics to your dashboard. The goal isn’t to track everything—it’s to track what matters.
Remember: What gets measured gets managed. Build your metrics habit today, and your future self will thank you.
Resources
- Baremetrics Academy - Free SaaS metrics courses
- ProfitWell - Free revenue tracking for startups
- The SaaS Metrics FAQ - Common questions answered
- ChartMogul - Revenue analytics platform
- MicroConf - Resources for bootstrapped SaaS founders
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