Professional service firms fail from cash, not from profit. A firm can be genuinely profitable on paper and still be unable to make payroll, because the money is sitting in work you have done and not yet been paid for.
The useful question is not how do we collect faster. It is where exactly is the delay, because most firms guess wrong.
Break the cycle into four gaps
From doing the work to holding the cash, there are four separate delays. Each has a different fix and most firms only ever attack the last one.
1. Work done to time recorded
If time is entered a week late, everything downstream moves a week later. This is the cheapest gap to close and the most commonly ignored, because it feels like an administrative nuisance rather than a cash problem.
2. Time recorded to invoice sent
Often the largest gap and almost always invisible. A firm billing monthly, with the bill going out on the 15th of the following month, has built in an average delay of six weeks before the client has even seen an invoice.
3. Invoice sent to payment received
This is the one everyone measures and the one you control least.
4. Payment received to cash available
Usually small, but cheque handling and deposit timing add days.
Measure all four. Firms that do are usually surprised to find gaps one and two are larger than gap three.
The numbers to watch
- Work in process. Work performed but not yet billed. Rising WIP means you are financing your clients.
- Accounts receivable ageing. Not the total — the buckets. A stable total can conceal an ageing tail.
- Realisation rate. What you actually billed against what the work was nominally worth. Persistent write-downs are a pricing or scoping problem wearing a cash flow costume.
- Collection rate. What you collected against what you billed.
Realisation is the one most firms never calculate, and it is often where the real leak is. If you are consistently writing down 15% of billable work before it ever reaches an invoice, no collections effort will fix that.
Levers that actually work
Bill more often
Moving from monthly to twice-monthly billing can cut weeks out of the cycle for no additional cost. Clients generally prefer smaller, more frequent invoices anyway.
Take retainers
Evergreen retainers replenished as work is performed transform the picture: you hold the money before doing the work. For law firms these are client funds and belong in trust under Rule 1.15 until earned, which is a compliance obligation rather than a cash management technicality.
Bill on milestones, not completion
For project work, progress billing at defined points keeps cash arriving through the engagement rather than after it.
Make paying easy
ACH and card payment options measurably shorten collection. The processing fee is almost always cheaper than the float, and considerably cheaper than a receivable that ages into a write-off.
Follow up on a schedule, not a mood
Most firms chase invoices when cash gets tight, which is exactly when the receivables are oldest and hardest to collect. A defined sequence — reminder at 15 days, call at 30, escalation at 45 — collects far more than sporadic urgency.
The partner draw question
Firms often manage draws against profit rather than cash. Profit says the money was earned. Cash says whether it has arrived.
A growing firm can be increasingly profitable and decreasingly liquid at the same time, because growth consumes cash into WIP and receivables. Draws set from the profit and loss alone will drain a firm that is doing well.
The fix is a rolling cash forecast alongside the financials, which requires books closed monthly rather than reconstructed quarterly.
Talk it through with a Fresno CPA
We track WIP, realisation and receivable ageing monthly for professional service firms in Fresno and Clovis. See our professional services accounting page.
Schedule a meeting or call 559-372-9213.
This post is general information, not advice for your specific situation. Tax figures are current for the year stated and many are indexed annually. Talk to a CPA before acting on any of it.
