Your numbers
Use your best estimates. Change one number at a time and watch what moves. Nothing here is a benchmark for your business.
Formulas are shown under each result so you can check them in a spreadsheet.
12-month projection (simple model)
Rule of thumb you'll hear from investors: an LTV:CAC of about 3:1 or better and CAC payback within about 12 months are often cited as healthy for subscription businesses. Treat these as conversation starters, not targets.