THE DECISION
Match the facility to the cause of the cash gap: unpaid B2B invoices can support invoice finance, while a modest short-term fluctuation may fit an overdraft.
Tool IQ view
Invoice finance can expand with eligible receivables and directly addresses slow B2B payment. An overdraft is simpler and more flexible for a modest general cash buffer, but its limit does not automatically grow with sales and can be reviewed. Compare total pounds paid, security, recourse and exit terms — not just the headline rate.
Options at a glance
| Option | Best fit | Strength | Watch closely |
|---|---|---|---|
| Invoice finance | B2B businesses issuing credit invoices to creditworthy customers | Funding can rise with eligible invoices and shortens the wait for cash | Fees, concentration limits, recourse, customer interaction and contract terms |
| Business overdraft | Short, uneven working-capital needs within an agreed limit | Draw and repay flexibly through the bank account | Limit reviews, security, interest, fees and using temporary finance as permanent capital |
They solve different versions of a cash problem
Invoice finance advances cash against eligible unpaid invoices. The British Business Bank explains that it is normally available to businesses selling to other businesses on credit terms. Factoring can include collection support; invoice discounting generally leaves collection with the business.
An overdraft lets the bank account operate below zero up to an agreed limit. It is useful for timing mismatches, but availability and terms depend on the lender's assessment and the facility can be reviewed. Neither product fixes a structurally unprofitable business.
Compare the whole facility
Put both offers into the same 13-week cash-flow model. For invoice finance, model the eligible invoice value, advance percentage, service charge, discount charge, concentration limits, disputed invoices and bad-debt responsibility. For the overdraft, model average and peak borrowing, interest, arrangement or renewal fees and unused-limit fees if applicable.
- Total cash received and total pounds paid over the same period.
- Personal guarantees, debentures and other security.
- Recourse if a customer does not pay.
- Minimum term, minimum fees, notice and exit costs.
- Customer visibility and who controls collections.
- What happens if sales fall, one customer dominates or invoices become ineligible.
When invoice finance fits
It can fit a growing B2B company whose cash is tied up in valid invoices and whose customers pay on predictable credit terms. The facility may grow as eligible receivables grow, making it more responsive than a fixed overdraft limit.
It fits less well where most sales are to consumers, invoices are milestone-based or disputed, customer concentration is high, or margins cannot absorb the fees. Confidentiality, collection quality and credit protection should be checked explicitly.
When an overdraft fits
An overdraft can be efficient for a seasonal dip or short timing mismatch where borrowing quickly returns to zero. It is easier to understand operationally because it sits in the current account and is not tied invoice by invoice.
Persistent use at the limit is a warning. The business may need longer-term working capital, tighter collections, better pricing or a reduction in stock and expenses. Stress-test a lower limit and a higher rate before relying on it.
Decision rule
Forecast the gap first, then obtain written proposals for the same amount and period. If the gap moves with sound B2B receivables, invoice finance deserves serious consideration. If the need is small, temporary and general, an overdraft may be cleaner. Seek independent advice and read the facility documents before committing.
Primary and official sources
Provider capabilities and rules can change. Follow these links to verify the current position before buying.
Commercial disclosure
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Tool IQ provides general educational information, not financial, tax, legal, employment or accounting advice. Check current rules and obtain professional advice where appropriate.