Why your billing rate and your effective rate are not the same number

A partner at a 12-person litigation firm believed the senior associate was generating $450 an hour. That was the billing rate on the rate card, and the associate was logging 1,800 hours a year. On paper, the attorney was producing $810,000 in revenue. The actual figure, after accounting for time entry lag, write-downs, and collection shortfall, was $651,320. The effective hourly rate was $362, not $450. The firm had been staffing and planning around a number that did not exist.

What the effective rate measures

The billing rate on a rate card is a ceiling. What the firm actually collects per hour worked is the effective rate, and it is almost always lower. At most firms, the effective rate runs 15 to 30 percent below the billing rate, driven by a combination of factors that individually look manageable but compound together.

Understanding the effective rate by timekeeper is how a managing partner makes accurate staffing decisions, sets rates for the coming year, and identifies which attorneys are genuinely profitable versus which ones are expensive to carry.

Where the gap comes from

Time entry lag. Hours worked but never entered into the billing system cannot be billed. At many firms, attorneys enter time at the end of the week rather than daily. By Friday, a portion of what happened Monday and Tuesday is either forgotten or estimated short. On a 1,800-hour year at $450, losing 144 hours to entry lag costs $64,800 of revenue that never reaches a bill.

Write-downs at billing review. Before invoices go to clients, a billing partner reviews draft bills and reduces entries that look excessive or hard to justify. A four-hour research entry on a routine matter becomes 2.5 hours. These reductions are routine, but they are rarely tracked by timekeeper. If one attorney consistently generates $59,600 in write-downs per year, that attorney is billing at a discount the firm is absorbing without knowing the total cost.

Collection shortfall. Not every billed amount is collected. Clients dispute invoices, pay partial amounts, or stop responding after a matter closes. A 95 percent collection rate sounds high. On $685,600 billed, a 5 percent shortfall is $34,280 that never arrives. That reduces the effective rate whether or not the firm tracks it explicitly.

Blended and fixed-fee arrangements. Some attorneys carry a mix of hourly and fixed-fee work. A fixed-fee matter that takes 40 hours but was quoted at $9,000 produces an effective rate of $225 per hour on that engagement. Attorneys who carry several such arrangements each month can have a blended effective rate well below their rate card.

What the numbers look like for one attorney

Here is the effective rate calculation for the senior associate in the example:

The rate card says $450. The books say $362. That $88-per-hour gap, applied across 1,800 hours, represents $158,400 of lost revenue from one attorney in one year.

Why this matters for firm planning

When managing partners use billing rates instead of effective rates for planning, the firm consistently overstates revenue capacity. A new hire brought in to handle overflow may generate 80 percent of what was projected, and the shortfall gets attributed to client mix or market conditions rather than the gap between rate card and actual collections.

Compensation decisions made against billing rate targets can reward hours entered rather than revenue generated. An attorney who enters 1,900 hours at $350 and collects $640,000 may be more valuable than one who enters 1,900 hours at $450 and collects $580,000. Without effective rate tracking, the second attorney looks more productive on every standard report.

What proper tracking looks like

For law firm clients we work with, effective rate is calculated quarterly by timekeeper. The analysis pulls total hours worked from the billing system, compares against hours entered and billed, calculates net revenue collected, and divides by hours worked to produce the effective rate per timekeeper.

Three sub-metrics make the analysis actionable: the time entry realization rate (hours entered versus hours worked), the billing realization rate (net billed versus gross billed before write-downs), and the collection realization rate (collected versus billed). Each points to a different problem with a different fix.

Best practices for law firm operators

• Track effective rate by timekeeper quarterly. The gap between billing rate and effective rate is where revenue is being left on the table, and it compounds annually.
• Require daily time entry, not weekly. End-of-week entry is the leading cause of time entry lag at small and midsize firms, and it is the easiest gap to close.
• Monitor write-downs by timekeeper, not just by matter. An attorney who generates consistent write-downs is effectively billing at a discount the firm has not explicitly agreed to.
• Separate fixed-fee and hourly revenue in the books so the effective rate on each arrangement type is visible. A blended rate can hide a money-losing fixed-fee practice inside otherwise healthy hourly revenue.

Three questions worth asking

1. What is the effective hourly rate for each attorney, and how does it compare to the billing rate on the rate card?
2. What percentage of worked hours are entered and billed, and which timekeepers have the largest entry lag?
3. What are the top five matters by dollar amount of write-downs in the last 12 months?

If those answers are not immediately available, the books and billing system are not connected in a way that shows the firm its actual economics. The data is there. It may be sitting in separate systems that have never been reconciled against each other.

If you want a second look at how your firm’s effective rates compare to billing rates, send over two quarters of billing and collection reports. We will identify where the gap is largest and which levers are worth addressing first.