THE NUMBERS

Put the assumptions in one frame.

Start with the inputs you can actually test: what you charge, what it costs to deliver, how you find customers, and how many you expect to add or lose.

WORKSHEET

Your starting assumptions
Use the examples as a starting point, then replace them with numbers you can defend. This page records no data and makes no forecast.

What one customer pays you each month.

Costs that do not change directly with customer count.

Delivery, support, fulfillment, or other variable cost per customer.

Your estimated cost to win one new customer.

A whole-number monthly target for new customers.

The percentage of customers you expect to lose each month.

Every field is required. Costs can be zero, but revenue must be greater than zero.