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Invoice FinanceProfessional Services

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.

£50k - £5M facility
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. 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

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Invoice / ledger value£50,000
Advance rate85%
Service fee1.5%

Cash advanced now

£42,500

Fee

£750

Net received

£49,250

Held back

£7,500

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CoreFi 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.