Professional Services Bookkeeper Sydney: The Firm Setup

Updated: November 2026

To have this handled on a fixed monthly fee, see professional services firm bookkeeping on a fixed fee.

A professional services bookkeeper in Sydney should give a consulting, advisory, IT or design firm three things: a clear view of unbilled work, tight control of debtors, and payroll and contractor records that stand up to the ATO. Most firms get the first two wrong because their Xero file was set up like a shop, with income recorded only when an invoice goes out. This guide covers the setup that suits a firm, from billing to reporting.

If you run a specific type of practice, we also have guides for consultancies, law firms, engineering firms and architects.

What makes professional services bookkeeping different?

A firm sells time and expertise, usually on projects or retainers. That creates a few patterns a general bookkeeper can miss:

Revenue is earned before it is invoiced. Work in progress (WIP) builds up between milestones. If your books only show invoiced income, a busy month can look weak and a billing month can look spectacular.
Cash lags revenue. Clients pay on 14, 30 or 60-day terms, and some pay later than that. Profit and cash can move in opposite directions.
People are the main cost. Salaries, bonuses, commissions and contractors usually make up most of the cost base, so payroll accuracy matters more than almost anything else.
Projects need their own numbers. A firm-wide profit figure hides which clients and service lines make money.

How should WIP and billing be set up in Xero?

You do not need complex software to see WIP. You need a consistent process:

Use tracking categories in Xero for service line, and either projects or a second tracking category for major clients.
Agree a billing calendar: milestone, monthly in arrears, or retainer in advance. Each has a different effect on cash and reporting.
At month end, record a WIP estimate from your time or project system so the profit and loss reflects work done, then reverse it when the invoice is raised. Your accountant can advise whether this suits your reporting and tax position.
Invoice retainers in advance with a clear service period so income is matched to the month it belongs to.

How do you keep debtors under control?

For most firms, debtors are the biggest controllable cash lever. A good bookkeeper should:

Send invoices on the agreed day, every time. Late invoicing is the most common cause of slow payment.
Run a weekly aged receivables review and follow up overdue accounts in a set sequence.
Flag clients whose payment pattern is getting worse before you take on more work for them.
Report debtor days each month so you can see the trend.

Our payables and cash flow service includes debtor follow-ups as standard.

What payroll and contractor rules matter for firms?

Professional services firms often mix salaried staff, bonuses, commissions and contractors. Three rules deserve attention:

Payday Super. From 1 July 2026, super guarantee is 12% of qualifying earnings and must be received by the fund within 7 business days after each payday. Qualifying earnings include all commissions paid to employees.
Contractors paid mainly for their labour. Independent contractors paid mainly for their labour are treated as employees for super guarantee purposes, so a contractor label does not automatically remove the super obligation. Use the ATO's employee or contractor guidance and get advice if you are unsure.
TPAR for IT services. If your firm provides information technology services and pays contractors to deliver them, and those services are 10% or more of your business income, you may need to lodge a taxable payments annual report by 28 August.

Our payroll service runs Single Touch Payroll and pays super each payday.

How should GST on fees be handled?

Most professional fees in Australia are taxable for GST if you are registered. The traps are usually in the edges: disbursements recharged to clients, overseas clients where different GST rules may apply, and reimbursed expenses. Each needs a consistent treatment agreed with your accountant, and the bookkeeper should code them the same way every time. Tax invoices of $1,000 or more must show the buyer's identity or ABN.

What should a monthly report for a firm show?

A useful monthly pack for a professional services firm is short:

Revenue by service line and by major client, including WIP movements.
Gross margin after direct labour and contractor costs.
Debtor days and the overdue list.
Cash position and the next eight weeks of known commitments, including payroll, super, BAS and tax.
A few plain-English sentences on what changed and why.

That is the format of our monthly reporting: numbers plus a short explanation you can read in five minutes.

What do most firms miss?

Utilisation and pricing problems show up in the books long before they show up in the bank. If one service line consistently needs more hours than quoted, the gross margin by service line will drift down for months while total revenue looks fine. Firms that review margin by service line each month catch this early. Firms that only look at total profit usually find out at year end.

What does a good month-end look like for a firm?

A professional services firm should be able to close the month within the first week of the next one. A practical order of work:

Day 1: reconcile every bank and card account to the last day of the month.
Day 2: confirm all client invoices for the month have been issued, including disbursements you recover.
Day 3: estimate unbilled work in progress from your practice management or time system and review it with the principal.
Day 4: review debtors over 30 and 60 days and agree who will follow up each one.
Day 5: send the monthly report, with a few plain sentences on fee income, utilisation trends and cash.

If your firm cannot close within a week, the usual cause is invoices raised late or time not recorded promptly, not the bookkeeping itself. Fixing those habits often does more for cash flow than any software change.

It also helps to agree a short list of numbers the partners or directors will look at every month, such as fee income, debtor days and cash cover for payroll. When everyone reads the same three or four figures, the monthly meeting becomes a short conversation about decisions rather than a long one about whose spreadsheet is right.

FAQ

Do professional services firms need monthly or quarterly BAS?

Quarterly is the default if your GST turnover is under $20 million and the ATO has not told you to report monthly. Some firms choose monthly to smooth GST payments. Your bookkeeper can help you weigh the cash flow effect.

Should we record work in progress in Xero?

Recording a WIP estimate at month end gives a truer picture of performance. Whether and how to do it for tax purposes is a question for your accountant, but for management reporting it is very useful.

Can a bookkeeper chase our overdue invoices?

Yes. Debtor follow-ups are a standard bookkeeping task and are included in our Payroll Party and The Lot packs.

Are contractors covered by super?

Contractors paid mainly for their labour are treated as employees for super guarantee purposes. Check the ATO guidance for each arrangement.

Want your firm's numbers to show what is really going on?

We set up Xero for professional services firms with tracking by service line, a debtor routine and monthly reporting that explains itself.

Next step: send us a message and a real person replies within a few working hours, or book a free Xero Roast, a 15-minute plain-English review of your file with a fixed quote at the end. Our fixed monthly packs include a 4-hour reply guarantee, no lock-in and a 30-day money-back guarantee.

About Sydney Bookkeeper

Sydney Bookkeeper is the modern, fixed-price Sydney bookkeeper for businesses with staff that are tired of slow, hourly, jargon-spouting incumbents. We work with professional services firms, construction and property businesses, agencies, tech and ecommerce companies, hospitality groups, and health practices across Sydney. Monthly bookkeeping, BAS lodgement, payroll, and Xero file cleanups, all on fixed monthly pricing, no lock-in.

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The team uses a registered BAS Agent for all BAS and IAS lodgement services. Full registration details, agent particulars, and copies of the Tax Practitioners Board (TPB) Code of Professional Conduct, the TPB complaints process, and any conditions on the agent's registration are available on request by emailing hello@sydneybookkeeper.com. This content is general information only, written for Australian small and mid-market businesses. It does not constitute tax, financial product, or legal advice and should not be relied on as such. Tax obligations depend on your individual circumstances. For advice specific to your business, contact the team directly or consult a registered tax agent or licensed financial adviser. Sydney Bookkeeper is not a licensed tax agent or licensed financial adviser. Information was current at the time of publication and may change without notice. We review and update guides periodically.

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