How do write-downs, discounts, and credits work on an invoice?

A write-down reduces the time or amount before the invoice is generated. A discount reduces what’s owed after the invoice already reflects full value. A credit offsets a balance for a separate reason, like a billing error. Treating any two as interchangeable erodes your realization rate.

Three different accounting events, not one

A write-down happens before the invoice exists. A timekeeper’s hours or a flat fee get reduced from what was actually recorded, so the invoice that eventually goes out already reflects the smaller number — the client never sees the original, higher figure.

A discount happens after the invoice exists. The full value gets billed first, then a reduction is applied against what’s owed, which is a distinct entry against the receivable rather than a change to what was originally billed.

A credit isn’t about the value of the work at all. It offsets a balance for a reason unconnected to how much time was worked or what was charged: correcting a data-entry error, honoring a referral arrangement, or resolving a client dispute.

Why the difference matters for realization

Realization measures how much of the value your firm actually created gets converted into a bill. A write-down happens at exactly that conversion point, before the invoice is generated, so it’s a realization event by definition. A discount happens after conversion; it’s a collections-side reduction, a question about what the client ultimately pays rather than about how much of the work got billed in the first place.

Post both to the same account, or use the words interchangeably with your billing team, and your realization number stops telling you anything specific. You can see that less money came in than the work was worth, but you can’t see whether that happened because the firm chose to bill less, or because the firm billed full value and then chose to collect less.

A test you can run on your last few invoices

Pull your last few downward adjustments and ask, for each one: did this change the number before the invoice went out, or after? Was it about the value of the work itself, or about something unrelated, like an error or a standing arrangement with the client? If you can’t answer both questions instantly, or if all three types land in the same account on your books, your firm is treating three different events as one, and your realization rate is absorbing a difference it was never designed to explain.

A hypothetical example

Say a hypothetical matter has $10,000 of recorded time. If the billing partner writes down $1,000 before the invoice goes out because the fee arrangement caps it, the invoice reads $9,000 — realization on that matter is already reduced before the client sees anything. If instead the full $10,000 goes out and the firm later removes $1,000 as a loyalty discount, the invoice still reflects $10,000 of billed value; the reduction happens on the collections side. Same $1,000, two different places it shows up, and two different things it tells you about the firm.

Where this shows up in your reporting

If your firm already breaks out write-downs by attorney as a distinct line, run the diagnostic above: check whether that number reflects true write-downs only, or whether discounts and credits got folded in over time. If the three were never separated on the books, no report can separate them retroactively. It’s also worth confirming the underlying time is accurate before calling a reduction a write-down at all — the gap between billable and actual hours is a separate question from the invoice, though the two get discussed in the same breath.

What this depends on

• Whether your chart of accounts separates write-downs, discounts, and credits, or nets them into one line.
• Whether the write-down decision happens with the timekeeper, the billing partner, or later during collections.
• How your firm defines realization internally — against recorded time value, against the original invoice, or some other baseline.
• Whether a reduction is visible to the client on the invoice itself or handled only internally.

Related questions

Is a discount or credit always a manual, case-by-case decision? Not necessarily. Some firms apply a discount as a standing policy, like a reduced rate for a long-term client, while others decide case by case. Either way, that’s a policy choice; it doesn’t change which of the three accounting events actually took place.

Does a write-down show up on the invoice the client sees? A write-down happens before the invoice is generated, so what the client typically sees is the resulting total, not a separate deduction. A discount or credit is a change to an already-stated amount, so it’s more often visible as its own line.