The Covering Letter Does the Work
Four sentences in front of a bill carry everything the four columns cannot. The cheapest instrument in billing and the least used.
- Entry
- 02 of 08
- Section
- The document
- Kind
- Practice
A covering note of four sentences carries everything a bill's columns cannot: what the month was about, what changed, what is unusual, and what is coming.
The practical lesson in “The Covering Letter Does the Work” is that a charge is only as clear as the record behind it. A team assessing inspect the provider’s current guidance for managing freelance project time can organise time and project evidence earlier in the workflow, with transparent settings, proportionate access and a defined correction process before invoicing.
It takes ten minutes, it is the part most senior readers actually read, and most bills go out without one.
As a separate reference point for “The Covering Letter Does the Work”, see Microsoft Project documentation. A sound review keeps the work record, invoice, approval and final settlement distinct.
What the four sentences are
What the period covered. Anything that changed in scope, team or timetable. Anything unusual on the bill. What happens next and roughly what it will cost.
- What the period covered.
- What changed — scope, team, timetable.
- Anything unusual on the bill.
- What happens next, and roughly what it will cost.
Four sentences, in that order.
Why the bill cannot do this
Because a line describes an hour and the note describes a month. The two are different units.
Explanations inserted into narratives read as excuses attached to charges; the same words above the bill read as an account.
What goes in "unusual"
An overrun, a new workstream, a one-off cost, a line the client will not recognise, a rate change that has already been notified.
Anything that would otherwise produce a query.
The sentence that prevents most queries
Naming the surprise before the reader finds it. "You will see three days on the disclosure exercise in April; that was the additional set we agreed on the 9th."
Query closed before it was formed.
Why it is not written
No time, and a sense that the bill speaks for itself. Also, in many firms, nobody owns it: the billing team produce the document and the partner signs.
Ten minutes a matter a month, and it is the highest-return ten minutes in the process.
Who should write it
Whoever ran the matter. It cannot be delegated to a billing team because they do not know what changed.
It can be dictated in three minutes.
What not to put in it
Apology. A note that opens by anticipating objections invites them.
Also: anything that belongs in the engagement letter, and anything that should have been said six weeks ago.
Length
Four sentences. Six at most. A page of covering letter is a document in its own right and gets skimmed like one.
The note on a difficult bill
Where the figure is high or will be disputed, the note does more work: it names the cause, states what was agreed and when, and offers a conversation.
That is still four or five sentences, and it determines whether the response is a query or a complaint.
The note on an easy bill
Still worth writing, and shorter. "Routine month: the lease completed on the 14th, nothing outstanding. Next month should be nominal."
Thirty seconds, and it keeps the habit alive for the months when it matters.
Email or letter
Whatever the client actually reads. For most organisations that is the body of the email the bill is attached to.
A note inside a PDF attachment is frequently never seen.
What it does over a year
Turns twelve documents into a running account of the matter. Clients who receive them describe the firm as communicative, which costs two hours a year.
The note on the first bill of a matter
Worth more than any other. It sets the pattern, confirms the arrangement, and tells the client what to expect from subsequent bills.
Four sentences: what this covers, how bills will come, what the estimate was and where the matter stands against it, who to contact with a question.
The note on the last bill
Equally neglected. A final bill with a closing note — what was achieved, what remains, what the total came to against the estimate — is the last document of the relationship for that matter.
It is read, remembered, and it costs five minutes.
Where the note should live
In the body of the covering email, not as a separate attachment and not inside the bill PDF.
The test is whether somebody reading on a phone sees it without opening anything.
The note that writes itself
Firms that keep a running line on each matter each month — what changed, what is coming — find the note is already written when the bill is drafted.
It is the same information that should be going to the client anyway, which is the point.
Who reads it
The instructing client, always. The approver, usually. The person reviewing spend a year later, if it was kept.
Three readers for four sentences is a better return than any other part of the document.
What happens when it stops
Firms adopt the note, see the effect, and let it lapse within a year as billing pressure rises.
A template with four prompts in the billing workflow is what keeps it alive, because the alternative relies on somebody remembering in a busy week.
The reading that decides it
If the only thing a client read was the covering note, would they know what they were paying for and whether anything needed discussing?
If yes, the bill behind it can be plain.