Finance Calculator
Advance Rate Calculator
See how different advance rates affect the funding available from your debtor book. Compare up to three scenarios side by side to understand the impact on cash released and retention held.
Enter your debtor book and advance rate scenarios
How do advance rates affect funding?
The advance rate is the single most impactful variable in determining how much cash you can release from your debtor book. A higher advance rate means more cash upfront but less retention held as a buffer. A lower rate provides a larger retention cushion but reduces immediate liquidity.
Understanding the difference a few percentage points can make helps you evaluate provider offers more effectively and negotiate better terms.
The formulas used in this calculator are:
Available Funding = Debtor Book × Advance Rate
Retention = Debtor Book − Available Funding
For example, on a £500,000 debtor book, the difference between a 75% and 90% advance rate is £75,000 in additional upfront funding — a significant amount for most SMEs managing cash flow.
Assumptions and caveats
- •This calculator assumes the full debtor book is eligible. In practice, lenders exclude certain debtors before applying the advance rate.
- •Advance rates depend on sector, debtor quality, provider, concentration, and facility type.
- •Higher advance rates may come with higher fees or stricter eligibility criteria.
- •The retention is released once the customer pays (minus fees), so it is not lost — it is timing.
- •Results are indicative only. Contact a specialist for formal quotations at specific advance rates.
Frequently asked questions
An advance rate is the percentage of an invoice's value (or the eligible debtor book) that a finance provider will release upfront. For example, an 85% advance rate on a £100,000 invoice means the provider advances £85,000 immediately. The remaining £15,000 (the retention) is released when the customer pays, minus fees.
Advance rates are influenced by several factors including the sector and industry risk, quality and spread of the debtor book, customer payment history, volume of turnover, whether the facility is recourse or non-recourse, and the specific invoice finance provider. Higher-quality books with diversified, creditworthy debtors typically attract higher advance rates.
Yes. Providers may adjust advance rates during the facility term based on changes in debtor quality, payment performance, concentration levels, or sector conditions. An improving debtor book and strong payment track record can lead to an increased advance rate at review.
In the UK, typical advance rates for invoice finance range from 70% to 90%. Most standard facilities offer between 80% and 85%. Rates above 90% are uncommon and usually reserved for very high-quality books. Rates below 70% may apply to higher-risk sectors or books with significant concentration.
Need help choosing a provider?
The Spark team can compare advance rates and terms from multiple invoice finance providers to find the best fit for your business.
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