Cash vs. Accrual for Attorneys: Which Your Firm Should Use

This question comes up in almost every onboarding conversation, and the honest answer is less binary than it sounds.

Most law firms should keep their books on a cash basis for tax purposes and look at accrual-basis reports for management decisions. Those are not contradictory — they are two views of the same data, and modern accounting software can produce both.

The interesting part is knowing which view to trust for which question.

The distinction

Cash basis records revenue when money arrives and expenses when money leaves. Simple, intuitive, and it matches your bank account.

Accrual basis records revenue when it is earned and expenses when they are incurred, regardless of when cash moves. You bill $18,000 in March and record $18,000 of March revenue, whether or not the client pays until June.

For a business with immediate payment, the two are nearly identical. For a law firm — where billing, collection and the work itself can be separated by months — they can tell very different stories.

Why most firms use cash basis for tax

Two reasons, and one of them is straightforward tax timing.

Under cash basis you do not pay tax on revenue you have not received. Bill $80,000 in December and collect it in February, and cash basis puts that income in the following tax year. Accrual basis taxes you on it in December — on money you do not yet have.

For a firm with meaningful receivables, that timing difference is real cash. Many firms are permitted to use cash basis for tax purposes; whether yours qualifies depends on your entity structure, your revenue and current tax rules. That is a question for your CPA, not for us and not for this article.

The second reason is simplicity. Cash basis books are easier to keep, easier to reconcile and easier to explain.

Why cash basis misleads you as a management tool

The problem with cash-basis reporting is that it describes the past rather than the present.

A big collection month looks like a great month. You collect $140,000 in April, mostly from work done in January and February. Cash basis shows April as outstanding. It says nothing about whether April’s actual work was profitable — or whether anyone did any.

A slow collection month looks like a crisis. You bill well, clients pay late, and your P&L shows a bad month that reflects nothing about the work.

Receivables are invisible. Cash basis does not show what you are owed. A firm with $200,000 in outstanding invoices and a firm with none look identical on a cash-basis P&L, and they are in completely different positions.

Work in progress is invisible too. Unbilled time — hours recorded but not yet invoiced — does not exist on a cash-basis statement. For a firm that bills monthly, that can be several weeks of work simply absent from the picture.

What accrual reporting shows you

Run the same firm on accrual and different things become visible.

Revenue lands in the period the work happened, which is the only basis on which you can compare months meaningfully, or judge whether a hire is paying for itself.

Receivables appear on the balance sheet, so you can see what you are owed alongside what you have.

Expenses match the revenue they generated. The expert witness invoice for a matter appears alongside that matter’s revenue rather than three months earlier.

For any question about profitability — is this practice area working, should we hire, is this rate right — the accrual view is the one that answers it.

The practical arrangement

For most firms the sensible setup is:

Books on a cash basis for tax, if your CPA confirms you qualify and it benefits you.

Accrual-basis management reports produced monthly, showing revenue as earned, receivables outstanding, and work in progress.

A cash flow statement alongside both, because neither P&L answers “can we make payroll.”

QuickBooks Online will toggle between cash and accrual views of the same underlying data — provided the underlying data is entered properly. That is the catch: if invoices are only recorded when they are paid, there is no accrual data to view. The invoice has to exist in the books at the point it is issued.

Where each one lies to you

Worth being blunt about this.

Cash basis lies about timing. It will tell you a month was good because an old invoice landed, and it will not tell you that nothing was billed that month.

Accrual basis lies about liquidity. It will show a profitable quarter while the operating account runs dry, because revenue recognised is not cash received. Contingency practices feel this most acutely — accrual reporting can show years of nothing followed by an enormous quarter.

Neither is wrong. Each answers a different question, and the mistake is asking one of them the other’s question.

The one thing that is not optional

Whichever basis you report on, trust accounting is unaffected.

Client funds are a liability from the moment they arrive until the moment you have earned them. That is true on cash basis, on accrual basis, and under every set of professional rules we are aware of. There is no accounting method under which a retainer becomes revenue simply because it hit your bank account.

If your books show trust deposits as income, that is not a cash-versus-accrual question. That is an error, and it is worth fixing this month.