Cash pays the bills, not WIP. For South African sole practitioners, healthy cash flow is the difference between a calm, client-centred practice and a monthly scramble to meet salaries, rent, bank charges, and SARS. This guide unpacks what cash flow means in business terms, the levers that move it in a one-lawyer firm, and practical steps to stabilise collections, without sacrificing ethics or client service.
What is cash flow?
Cash flow is the movement of money into and out of your practice over time. In a law firm, cash flows in when clients pay invoices, settle retainers, or reimburse disbursements; it flows out when you pay staff, rent, tech subscriptions, counsel, sheriff fees, and taxes. Profit and cash are not the same: you can be profitable on paper while running out of money if work-in-progress (WIP) and debtors sit unpaid. Good cash flow management shortens the time between doing work and banking cash, and keeps enough liquidity to cover predictable outgoings and surprises.
The cash flow engines in a sole practice
- Pricing model: Fixed fees, capped fees, contingencies, and retainers each create different cash patterns. Retainers and staged fixed fees tend to smooth cash; "bill at the end" hourly work creates spikes.
- WIP and lock-up: Lock-up = WIP days + debtor days. The higher the lock-up, the more cash is stranded.
- Realisation and recovery: Realisation is the percentage of recorded time that makes it onto the bill; recovery is the percentage of the bill that clients actually pay. Both drive cash.
- Debtor management: Ageing over 60 days is costly; your probability of full recovery falls sharply after 90 days.
- Trust vs business: Trust accounts hold client money until you earn it; business accounts pay your overheads. Moving funds correctly and promptly (when earned and billed) keeps your operating cash healthy and your compliance spotless.
- Tax timing: VAT, PAYE, and provisional tax payments create predictable outflows. Plan for them in your forecasts.
Practical tips to improve cash flow (and keep it ethical)
1) Front-load value and deposits
Adopt a matter intake pack that includes: a clear mandate letter, scope and exclusions, fee model, billing frequency, and payment options. For new matters, take a retainer/deposit into trust (evergreen if possible) and bill against it. Explain that this protects both parties and avoids delays in urgent work.
2) Bill little, bill often
Monthly (or milestone) billing turns a R60 000 shock into four R15 000 routine payments. Smaller, regular invoices improve recovery and reduce queries. For longer matters, send a statement of activity even when the balance is retainer-funded; clients who see progress pay faster.
3) Offer modern payment options
Shorten debtor days by adding “Pay Now” links to invoices (card/instant EFT), QR codes, or secure client-portal payments. Many clients pay the same day when the path is frictionless. For recurring matters, consider scheduled payments with client consent.
4) Separate disbursements smartly
Bill rechargeable disbursements (sheriff, counsel, transcripts) promptly, ideally in advance or as pass-throughs, rather than carrying them for months. It preserves cash and reduces the risk of unrecoverable outlay.
5) Use matter budgets and scope control
A one-page budget and timeline at inception reduces surprises. If the scope changes, pause and issue a change note (what changed, the new price or cap, client confirmation). Scope discipline protects cash and client trust.
6) Track the right metrics weekly
- WIP days (target: trending down).
- Debtor days/DSO (e.g., aim < 45 days for a solo).
- Realisation % and recovery % (up is good).
- Cash on hand vs next 8–13 weeks of outflows.
A simple dashboard (even a spreadsheet) beats guesswork.
7) Build a 13-week cash forecast
List expected receipts (invoices due, retainers to top up) and outflows (rent, salaries, subscriptions, tax, counsel). Update weekly. A rolling forecast lets you stagger expenses, accelerate billing, or nudge clients before a crunch.
8) Make time capture effortless
Start/stop timers from email or document views; convert calls and WhatsApp notes into time entries immediately. The goal is to record earlier and write off less. Accurate narratives (“Drafted section 129 demand; reviewed payment history; called client re settlement proposal”) get paid quicker than vague “perusal and attention.”
9) Choose free models that match the matter
- Retainers for ongoing advisory.
- Fixed/milestone fees for predictable processes (uncontested divorces, evictions, wills, lease reviews).
- Capped fees to give comfort while protecting you from unlimited scope.
- Contingency (where lawful) with disbursement funding plans, know you’ll face long negative cash flow before a lump-sum win.
Blended models (reduced hourly + success kicker) can align incentives and help cash flow.
10) Tighten debtor hygiene
State payment terms upfront (e.g., due on receipt or 15 days). Send friendly reminders at 7/14/30 days and escalate politely. Offer structured payment arrangements for good clients in temporary distress, but document them and monitor them. For chronic late payers, request a fresh deposit before resuming work.
11) Master trust-to-business transfers
Transfer from trust only when fees are billed and earned, and only for the amount due on that matter. Keep immaculate three-way trust reconciliations (bank balance = client ledger total = trust control). This keeps auditors (and your stress levels) happy.
12) Plan for VAT and provisional tax
By default, many firms account for VAT on the invoice (accrual) basis, meaning VAT is due even if the client hasn’t paid. If your turnover is small enough and your profile fits, discuss the payments basis with your accountant. Either way, ring-fence VAT as invoices go out so SARS month/bi-month doesn’t ambush your cash. Set aside provisional tax throughout the year, not only at the deadline.
13) Control drawings and overhead creep
Pay yourself a consistent, affordable drawing and review quarterly. Scrutinise subscriptions and licences; legal tech is powerful, but unused seats drain cash. Negotiate annual discounts or shift to tools that genuinely save time (and thus generate cash).
14) Build a small buffer and a backup plan
Target at least one month of operating expenses in reserve. Arrange an overdraft facility well before you need it; banks help more when your numbers look good.
15) Communicate value, not minutes
Clients pay faster when they understand outcomes. Translate activity into results: risks mitigated, deadlines met, agreements closed. A short, result-focused email accompanying the invoice improves recovery.
Common cash flow traps for sole practitioners
- "I'll bill at the end." Memory fades; clients forget the value delivered. Bill monthly or per milestone.
- Scope creep by stealth: Create a culture of change notes.
- Carrying disbursements: Collect upfront or bill immediately.
- No forecast: If you can't see 13 weeks ahead, you can't steer.
- Weak intake: No deposit, no clear terms, no payment method = poor cash flow.
- Overreliance on one client: Diversify your file types and referrers to smooth receipts.
Ethics and client care are cash flow allies
Clear mandates, honest estimates, and regular updates reduce disputes (and write-offs). Keep client funds safe in trust, maintain POPIA safeguards for payment data, and never let collections pressure push you into conflicts. Sustainable cash flow comes from predictable systems and principled practice.
Conclusion
Steady cash flow is built on clear terms, disciplined billing, and simple routines you follow every week. Ensure your cash flow isn’t a mad scramble so that you can focus on your clients.
If you are looking to expand your offerings as a sole practitioner, the Gawie le Roux Institute of Law offers practical training for attorneys that equips you with vital legal skills to grow your practice.
FAQs
What is a good profit margin for a small law firm?
Margins vary by practice area and leverage. Many healthy small firms target 25%-35% net profit before owner drawings, after paying normal operating expenses. Your reality depends on pricing, write-offs, utilisation, and overheads; measure and manage those drivers.
Can a legal practitioner borrow money from a client?
Using client trust funds for any purpose is prohibited. Personal loans from clients create conflicts of interest and are generally inappropriate; at a minimum, they require extreme caution, full transparency, and independent advice to the client. The safer course is to avoid borrowing from clients altogether and keep the relationship strictly professional.
What is the cash flow statement of a law firm?
It’s a report showing cash inflows and outflows by category:
- Operating activities (fees collected, retainers received, disbursements paid, salaries, rent, suppliers).
- Investing activities (buying/selling equipment, fit-out, major software).
- Financing activities (owner drawings/contributions, bank loans, and repayments).
It helps you see whether daily operations are funding the firm.
What are the three types of cash flow?
Operating, investing, and financing cash flows. For a sole practitioner, most attention belongs to operating cash flow, turning WIP and debtors into money in the bank, while keeping an eye on tech purchases (investing) and drawings/loans (financing).