Which metrics to track for each profit model, and which numbers mislead

The same measurement applied to different profit models produces nonsense. A monthly revenue figure means one thing for a business that starts from zero every month and something else for one where most of the month was already committed before it began.

The profit model pillar sorts models by cash timing and obligation, and the measures here follow that split: the ones that differ by model, and the ones everybody needs whatever they sell. No target values appear, because there are none that survive the change from one model to another.

What to take away

The three everyone needs

Cash timing. For every sale, the date the money arrived and the date the cost was incurred. The gap, and its direction, tells you whether growth funds itself or consumes the reserve. It decides how a business feels to run, and it is invisible in a profit figure.

Cost of gaining a customer. Everything spent in a period to be found and chosen, divided by the number of people who paid. Include your own hours at a rate you would accept from somebody else, which is the effective rate the skill-based guide treats as the figure containing all the others.

What a customer pays over the relationship. Follow the customers who first paid in one month and add up what they have paid since. Set the two figures against each other. There are no correct values, only a direction.

What to measure for each model

The obligation register

This is the measure almost nobody keeps and everyone with a continuing model needs. Once a month, write down what you owe customers that you have already been paid for: sessions not yet delivered, work paid in advance, memberships running, guarantees still live.

That total is a liability sitting inside a bank balance that looks comfortable. It tells you what you would have to deliver or refund if you stopped, and it stops you reading money held for future work as money earned. The larger the figure grows against a month's costs, the more carefully the reserve behind it needs watching.

Concentration, whatever the model

Once a month, list what share of revenue came from the single largest customer, and from the single largest channel. There is no correct share, but a rising one is a dependency, and dependencies end on somebody else's schedule.

The measure is cheap and it gives the most warning. For a venture selling online the concentration usually sits in a channel rather than a customer, and the online business pillar explains why an audience you rent can be taken back.

Money, recorded so the model is visible

Keep records with dates, instead of totals alone, because timing drives everything above. Set aside tax as income arrives, instead of at year end.

The IRS explains paying estimated tax through the year why a system expecting payment as you earn punishes a business that waits. The SBA's managing the money side of a business covers the wider habit.

What changes when the model changes

If you move from one-off sales to a continuing arrangement, three things change at once.

Measure them from month one: the obligation register starts, renewals or cancellations become the key number. The cost of gaining a customer can be tolerated at a higher level because the customer pays more than once.

Measuring the old way after a model change is the most common source of confident wrong conclusions. The startup budget guide is worth rereading at that point, because a change of model usually changes what the venture needs to hold in cash.

Reading the numbers

Fill in weekly, total monthly, act quarterly. Three signals deserve immediate attention: an obligation register growing faster than the reserve behind it, a net change in active customers turning negative while additions look healthy, and a lengthening gap between invoicing and being paid. Each has a specific fix, and none is visible in a revenue figure.

Common questions

Why not just track profit?

Because profit says nothing about timing, and businesses fail while profitable when the money arrives after it is needed. Profit is a summary. The measures here are the causes.

Can I use benchmarks from my industry?

With care, and only from businesses with your model. A figure from a business paid in advance describes a different world from one paid ninety days later.

How many of these should a small venture keep?

The three everyone needs, plus the one row from the table that matches your model, plus the obligation register if you have one. That is five numbers on one page.