Professional services

Professional services funding: wages, WIP and the wait for clients to pay

Funding for accountants, consultants, engineers, architects and agencies: wages before invoices are paid, work in progress, hiring and office fit-outs.

Updated 31 October 2026 · Air Business Loans editorial team

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Quick answer

Professional services firms pay salaried staff every week or fortnight while client invoices are paid on 14 to 60-day terms, often after weeks of unbilled work in progress. Lines of credit, invoice finance and unsecured loans, typically $5k to $500k and assessed on bank statements, help firms cover wages, hire for growth, fund office fit-outs and smooth uneven project billing.

Key points

  • Salaries are the main cost and are paid before clients.
  • Unbilled work in progress lengthens the cash cycle.
  • Invoice finance suits firms with business clients on terms.
  • Progress billing reduces funding needs.
Common needs
Wages, hiring, fit-outs, technology
Unsecured
$5k to $500k
Strong fit
Line of credit, invoice finance
Watch
Unbilled WIP and debtor days

Accounting practices, engineering consultancies, architecture studios, marketing agencies, law firms and management consultants all sell expertise by the hour or by the project. Their biggest cost is people, paid every pay cycle. Their income arrives when clients pay invoices, often weeks or months after the work began. That combination makes professional services firms profitable on paper and regularly short of cash in practice. Funding that matches the billing cycle keeps salaries paid and growth on track.

How money moves in a services firm

Work starts when a client engages the firm. Staff time accumulates as work in progress. At a milestone, month end or project completion, the firm invoices. The client approves and pays on its terms, which might be 14, 30 or 60 days, and large corporates and government may take longer. Meanwhile, salaries, super, rent and software subscriptions are paid on schedule. The gap between starting work and receiving payment can easily run to two or three months on project work.

Why firms seek funding

Common reasons include covering salaries during a gap between large projects, hiring ahead of new work, bridging slow-paying corporate or government clients, funding an office fit-out or move, investing in technology and software, and buying out a partner or acquiring another practice.

Funding options for professional services

Lines of credit suit the recurring gap between payroll and client payments. See business line of credit and payroll funding.

Invoice finance suits firms invoicing established businesses or government on terms. See invoice finance.

Unsecured loans suit fit-outs, technology projects and hiring for growth. See unsecured business loans and hiring staff.

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How assessors read a firm’s file

Anyone assessing a professional services firm looks at regular client payments and the spread of clients, salary payments and super, rent and software costs, existing finance and dishonours. Project-based firms often have lumpy deposits; explain your billing cycle, major clients and typical project size. A firm with a broad client base and steady billing presents well even if individual months vary. If one client represents a large share of fees, say so upfront and explain the relationship and contract term.

Shrinking the cash cycle

The cheapest funding is a shorter cash cycle. Bill monthly or at milestones rather than at project end. Ask for retainers or deposits on large engagements. Invoice promptly with clear terms and payment links. Follow up before the due date. Check the payment records of large clients through the Payment Times Reporting Scheme. Our guide to getting customers to pay faster has practical steps.

Hiring for growth

People are both the main cost and the main source of revenue. New hires take time to become fully billable, especially senior staff building client relationships. Fund the ramp-up period and track utilisation so you know when each hire is paying their way.

Partner buy-ins and practice acquisitions

Professional practices often change hands through partner buy-ins, retirements and acquisitions. These transactions involve valuing goodwill and the client base, and they usually need more documentation than working capital funding. Lenders will look at the practice’s billing history and client retention, the price and how it will be paid, and the incoming partner’s experience. Larger amounts may suit property-secured lending. Getting accounting and legal advice early makes the funding conversation straightforward.

Managing work in progress

Unbilled work in progress is cash you cannot even invoice yet. Review WIP every week, bill as soon as each stage is complete and avoid letting small amounts build up because invoicing feels like admin. Firms that bill monthly rather than at project end often cut weeks from their cash cycle. Time recording and practice management software make it easier to see WIP at a glance and to invoice promptly. When WIP is under control, the funding a firm needs often shrinks noticeably.

An illustrative example

An illustrative engineering consultancy wins a large infrastructure design project paid monthly on 45-day terms by a government agency. It needs to hire two engineers and a drafter immediately. The first invoice will be paid roughly three months after the new staff start. A line of credit sized to the new salaries and super for that period, repaid as monthly invoices are paid, lets the firm deliver the project without straining its existing payroll.

Keep your team billing

If you run a professional services firm and need funding for salaries, hiring, a fit-out or slow-paying clients, tell us about your billing cycle, clients and what you need. There is no credit check to enquire, your firm’s details are not passed among a crowd of lenders, and someone here reads each one properly. Accurate details help us match funding to your cycle. Apply now.

Frequently asked questions

Can a consulting firm get a business loan?

Yes. Professional services firms with regular client payments through a business account can access unsecured loans and lines of credit.

Is invoice finance suitable for professional services?

It can be, for firms invoicing established businesses or government on terms. Some funders have specific requirements for service invoices.

How do I fund hiring ahead of new work?

A line of credit or short-term loan can cover salaries while new staff become billable and their work is invoiced and paid.

What is work in progress and why does it matter?

It is work done but not yet invoiced. Large unbilled WIP means cash is tied up before you can even send an invoice.

How do lenders view lumpy project income?

They expect it in project-based firms. Explaining your billing cycle and client mix helps them read your statements.

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