How many new customers just to stay flat?

About this calculator

Churn is a tax on your existing base, and the bigger the base, the bigger the tax. Each month a slice of your MRR leaks out, and every new customer you sign first goes toward refilling that hole before any of them count as growth. The model computes the churned MRR, subtracts it from what your new customers bring in, and shows the net change - plus the replacement number: how many new customers you must sign each month purely to stand still. Sales can be working hard while the business quietly goes backwards. Pull the levers to see how the picture shifts when churn drops, deal size grows, or acquisition speeds up. Watch how much further a small churn improvement goes than the same effort spent on new logos. Then save the model with your own numbers to stress-test scenarios and share the leak with your team.