Invoice Finance for Professional Services Firms
By Joshua Giles, Founder and Director · Reviewed by the CoreFi credit team
Last updated 20 July 2026
CoreFi is a broker, not a lender. We do not set rates and lenders make all credit decisions.
In short: £50k - £5M facility over Ongoing (12-month rolling). Professional services firms sit in an odd position: the work is done, the invoice is raised, the client will pay, but the cash is locked away for 30 to 60 days.
Professional services firms sit in an odd position: the work is done, the invoice is raised, the client will pay, but the cash is locked away for 30 to 60 days. Confidential invoice discounting solves exactly this. The lender advances typically 85-90% of your invoice value the day you raise it; your client pays on the usual terms straight into a trust account; the lender releases the balance minus their fee. Your client never knows a funder is involved, which matters when you are a law firm or accountancy practice where appearing financially stretched is the last thing you want.
What lenders look at here is different from a manufacturing deal. There are no physical goods, no stock, no retention of title to fall back on. So underwriters focus on client quality (FTSE-listed or government debtors get better advance rates than SME debtors), contract clarity (is the work genuinely complete before the invoice is raised, or are there grounds for dispute?), and your debtor payment history. A firm billing on 30-day retainers with blue-chip clients will typically access higher advance rates and lower service fees than one running large project invoices against a spread of smaller private companies.
Confidential invoice discounting typically requires £500k or more in annual turnover. Below that threshold, disclosed factoring, where the funder handles your credit control, usually costs less and involves less operational overhead. As a broker we do not lend ourselves; we will tell you which structure makes sense for your numbers, and which lender is likely to price it best, before anything is agreed.
Key Benefits
- Confidential by design: your clients pay as normal and never learn a funder is involved, which protects the professional reputation you have spent years building.
- Retainer income is exactly what lenders want to see. Predictable, recurring invoices from reliable clients get treated favourably when the lender sets your advance rate.
- Advance rates on professional services invoices commonly reach 85-90% of face value, because the debts are clean and the work is already delivered when the invoice goes out.
- No property security required. The facility is secured against the debtor book, so you are not putting a director's house on the line to fund your working capital.
Frequently Asked Questions
Can time-based billing be funded?
Yes. Hourly and day-rate invoices work in the same way as fixed-price project invoices, provided the work is genuinely complete and the invoice is raised in the normal course of business. Lenders are not troubled by the billing model; they are troubled by disputed invoices, so keep your timesheets and any client acceptance records in order.
What about milestone-based project payments?
Each milestone invoice can be funded as it is raised. The lender will usually want evidence the milestone has been hit, for example a client sign-off email or a deliverable acceptance note. Build that into your project process and it creates no friction.
Is there a minimum turnover requirement?
Confidential invoice discounting typically requires £500k or more in annual turnover. Below that figure, disclosed factoring with full credit control support tends to be more cost-effective. We will tell you which structure fits your numbers before you commit to anything.
How does it work with retainer agreements?
Monthly retainer invoices are among the cleanest assets an invoice finance lender can hold. They are predictable, recurring, and paid reliably. Lenders view a strong retainer book favourably when setting advance rates, and it often means you can access a higher percentage of the invoice value than a firm billing purely on one-off projects.
Invoice Finance calculator
Move the sliders for an instant estimate. Free to use, no sign-up.
Cash advanced now
£42,500
Fee
£750
Net received
£49,250
Held back
£7,500
Illustrative estimate only, not a quote or financial advice. A broker will confirm exact terms based on your circumstances and lender appetite.
Work out your numbers
Related Funding Options
Invoice Finance UK: Fund Your Sales Ledger, Not Your Property
Invoice finance advances up to 90% of an unpaid invoice, often within a day of raising it. We place factoring & discounting facilities for UK limited companies across most sectors, with no property charge required.
Revolving Credit Facility for Professional Services Firms
Revolving credit for UK law firms, consultancies, and professional practices. Draw when you need it, repay when invoices clear. We place these across the panel.
Unsecured Business Loans for Professional Services Firms
Unsecured business loans for UK consultancies, law firms, accountancy practices and IT companies. Capital priced on trading strength, not property. We place these deals.
Invoice finance by location
Lender appetite varies by city and region. If you would rather start from where your business is based, these local guides cover the same funding with the local picture.
Researching Invoice Finance? Get the free guide
Plain-English, UK-specific. What it costs, who qualifies, and how to get the best terms, straight to your inbox.
- How invoice finance works and what it really costs
- Eligibility and the documents lenders ask for
- How CoreFi matches you to the right lenders from our panel
Ready to Get Funded?
Submit your details and we'll match you with the right lenders from our panel. No obligation, no fees.
Get matched with lendersCoreFi is a trading name of JG Core Ltd (Company #16218779, England & Wales). CoreFi acts as a commercial finance broker and does not provide regulated financial advice. All products described are unregulated business-to-business finance. Information on this page is for general guidance only and does not constitute a formal offer of finance. Terms, rates, and availability are subject to lender criteria and may change without notice.