The company selling the marketing should not be the only one grading it.

Some small businesses buy marketing — listings, advertising, a website — from the same company that provides their business software.

That can be convenient, and it means the report of what the marketing produced comes from the same place that sold it.

Matching customers against paid invoices on the contact detail gives a second view that does not depend on the vendor's own tracking.

Where the two agree, the business has evidence rather than an assurance. Where they do not, it has a specific question to ask.

This is not a claim that any vendor's reporting is wrong. It is the ordinary practice of checking a supplier's figures against your own books.

For a small business the check is cheap and the stakes are not. Marketing bought on an annual contract is often the largest single line in the budget, and renewing it on the strength of the seller's own report is the kind of decision that deserves one independent number.

Where invoices are paid through the same platform, the paid amount and date are recorded without anybody typing them.

That removes the usual gap between invoiced and received, and makes the revenue side of the match unusually clean for a small business.

It also makes deposits and part-payments visible, so a job paid in stages is summed by customer rather than counted as several sales.

The report ranks on paid revenue and says so, because a figure whose basis is stated is one the owner can defend to an accountant.

Many local businesses still pay for directory listings, in print or online, often renewed year after year without being measured.

They produce calls, and without a distinct number those calls cannot be told apart from any other.

A tracked number on each listing turns it into a lead source, and a year later the business knows what each renewal actually bought.

It is one of the simplest changes a small business can make, and it often settles a long-running argument about whether the listing still works.

A plumber, a salon or a local shop gets much of its revenue from people who came back.

Credited to the channel that first produced them, repeat sales make that channel look far better than it is; credited to nothing, they make every channel look worse.

The report separates first sales from repeat sales and leaves the judgement to the owner, with both numbers visible.

For most local businesses the repeat figure is the larger one, and it measures how good the work is rather than how good the marketing is.

That distinction matters when deciding what to spend on. A business whose revenue is mostly repeat customers has a retention strength to protect and may need less acquisition than it is buying; one whose revenue is mostly first sales has the opposite problem, and no amount of advertising will fix it.