Debtor Days Calculator | Spark Finance
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Debtor Days Calculator

Enter your annual revenue and current trade debtors to calculate your debtor days. Compare your result to the sector benchmark and see how much cash you could free up by improving collections.

Your inputs

£1,200,000
£50,000£50,000,000
£200,000
£1,000£10,000,000
30 days
7 days90 days

Estimated cost

Current debtor days

60.8 days

Target debtor days

30 days

Cash freed at target

£101,370

How much cash you could unlock by reaching your target

Daily revenue equivalent

£3,288

Revenue generated per day

Assumptions used in this calculator

  • Debtor days formula: (Trade Debtors / Annual Revenue) x 365.
  • Year-end debtors used; interim figures may give a more representative picture.
  • Excludes VAT from both revenue and debtors for consistency.

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Calculator questions

What is a good debtor days figure?

For most B2B businesses, below 45 days is acceptable. Below 30 days is excellent. Above 60 days suggests collections are underperforming or payment terms are too long.

How can I reduce my debtor days?

Invoice promptly, ensure invoices contain all required information, implement a structured chasing process, and consider invoice finance to decouple cash flow from customer payment behaviour.

How it works

How to get a debtor days through Spark Finance

  1. 1

    Complete the free calculator above to understand your estimated monthly repayment.

  2. 2

    Click 'Check your eligibility' to start your full application in under five minutes.

  3. 3

    Spark Finance approaches multiple lenders and presents you with competing offers to compare.

  4. 4

    Accept your preferred offer and funds are typically released within 24-72 hours.

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