Cash flow loans
A cash flow loan funds the timing gap between money going out and money coming in: the quiet season, the slow-paying customer, the stock bought months before it sells. It is defined by the use, not the product shape. Lenders underwrite it on recent bank statements and current trading, usually unsecured with a director guarantee, and the right structure follows the shape of the gap: one-off gaps suit a lump sum, repeating gaps suit a revolving facility, and gaps that live inside unpaid invoices are often best funded against the invoices themselves.
Founder & Managing Director, Muswell Rose, FundBiz
Adam is the founder and managing director of Muswell Rose and a founder of Best Business Loans Ltd, the company behind FundBiz. His background runs through commercial finance, mortgages and fintech, including as managing director of an invoice finance business. He oversees FundBiz's specialty finance comparison and the logic behind how businesses are matched to lenders.
Last reviewed: 14 July 2026
At a glance
- What it funds
- Timing gaps: money out before money in
- Security
- Usually unsecured; director personal guarantee standard
- Underwriting
- Recent bank statements or open banking, current trading
- Shapes
- Term loan, revolving facility, cash advance, invoice funding
- Repaid from
- The inflow the gap sits in front of
- Scope
- Ltd companies, LLPs, partnerships of 4+
Speed, duration, use: which page you actually need
Three questions get tangled together under "business loan", and this site keeps them apart. How fast must the money land? That is the fast business loans question: same-day and 48-hour routes and what genuinely speeds an application up. How long will you hold the debt? That is the short term business loans question: 3 to 18 month lending and its true cost. What is the borrowing for? That is this page. A cash flow loan is often both fast and short, but the use is what determines the right structure, and getting the structure right is worth more than either speed or term.
The gaps cash flow lending fits
Seasonality. The costs of trading run through the quiet months while the revenue concentrates in the busy ones. The borrowing carries the trough and repays out of the peak it funds.
Slow-paying customers. Work is done, invoices are out, and the cash arrives 30 to 90 days later while wages, rent and suppliers fall due on schedule. General borrowing can carry that gap, but when the gap sits inside a debtor book specifically, funding the invoices directly through our sister site MarketInvoice releases the cash that is already earned without adding an unsecured loan on top.
Stock ahead of demand. Buying inventory months before the season it sells in, or taking a bulk discount that ties cash up until the stock turns.
Contract mobilisation. A won contract that needs people, materials or kit in place before the first payment milestone arrives.
A lumpy bill against smooth income. Tax bills are the classic case: a quarter's VAT or a year's corporation tax falls due on one date while the cash that pays it arrives evenly. Spreading a tax bill is common enough to be its own product; see VAT loans. The same logic covers any month where a concentration of ordinary outgoings, the payroll run included, lands just ahead of the receipts that fund it: that is a timing gap like any other, sized and repaid the same way.
Size the gap before you price the loan
The size of a cash flow facility should come from the cash conversion cycle, not from a round number. Days from paying suppliers to collecting from customers, times the daily cost of trading, is the cash the cycle traps; the working capital cycle calculator does that arithmetic from your debtor days, stock days and creditor days. Borrowing materially more than the gap costs interest for nothing; borrowing less means coming back mid-gap, from a weaker position.
Matching the shape of the gap to the shape of the money
| Shape of the gap | Usual structure | Why it fits |
|---|---|---|
| One-off, defined end (a season, a contract, a bill) | Short term loan, 3 to 18 months | Lump sum matched to the life of the gap; done when the gap closes |
| Repeats every cycle | Revolving credit facility | Draw and repay each cycle; interest only on days drawn |
| Sits inside unpaid invoices | Invoice finance (MarketInvoice) | Releases cash already earned; scales with the debtor book |
| Tracks card takings | Merchant cash advance | Repayments flex with revenue through the quiet weeks |
| Permanent, growing with the business | Structural fix or longer-term funding | A permanent gap rolled through short loans is the most expensive way to fund it |
Source: FundBiz product pages, July 2026
View as plain-text Markdown
### Which cash flow funding structure fits which gap. Indicative product boundaries; the right answer depends on the individual file. | Shape of the gap | Usual structure | Why it fits | | --- | --- | --- | | One-off, defined end (a season, a contract, a bill) | Short term loan, 3 to 18 months | Lump sum matched to the life of the gap; done when the gap closes | | Repeats every cycle | Revolving credit facility | Draw and repay each cycle; interest only on days drawn | | Sits inside unpaid invoices | Invoice finance (MarketInvoice) | Releases cash already earned; scales with the debtor book | | Tracks card takings | Merchant cash advance | Repayments flex with revenue through the quiet weeks | | Permanent, growing with the business | Structural fix or longer-term funding | A permanent gap rolled through short loans is the most expensive way to fund it | Source: FundBiz product pages, July 2026
The detailed comparisons live on each product page: short term business loans, revolving credit facilities and merchant cash advances. For what each structure costs right now, with sources, see current business loan interest rates.
A timing gap, not a trading loss
The honest test before borrowing: is there a defined inflow on the other side of this gap? A cash flow loan bridges to money the business has earned or will earn on known terms. If the cash position deteriorates month after month with no such event, the problem is structural, and new debt adds fixed repayments to a business that could not fund its existing outgoings. In that position, borrowing is fuel on the fire; the options that actually help are on what to do after a decline and, where arrears are the pressure, the HMRC scenarios hub.
Declined elsewhere?
Cash flow lending is underwritten on recent trading, which makes it one of the more recoverable products after a bank decline: the evidence a specialist wants, 3 to 6 months of bank statements showing money moving, is exactly what a trading business has. FundBiz specialises in post-decline routing. Find your situation in the decline scenarios hub, or see bad credit business loans for how adverse markers change the panel rather than closing it.
Eligibility
FundBiz arranges cash flow lending for UK limited companies, LLPs and partnerships of 4 or more partners only. Sole traders are outside our scope. Typical lender asks: around 6 months or more of trading, turnover evidenced by business bank statements or open banking, and a director personal guarantee. Checking eligibility uses a soft search with no credit-file footprint.
Frequently asked questions
What is a cash flow loan?
A business loan taken to cover a timing gap in cash, where money has to go out before the money it earns comes in. It is defined by what the borrowing is for rather than by any one product shape: a cash flow need might be best served by a short term loan, a revolving credit facility, a merchant cash advance or invoice finance, depending on the shape of the gap. Lenders underwrite it on recent bank statements and trading rather than on security.
How is a cash flow loan different from a working capital loan?
They are close to synonyms. Working capital is the accounting name for the money tied up in running the business day to day; a cash flow loan funds a gap in exactly that. Some lenders brand the same product either way. What matters is the underlying question both names point at: how big is the gap, how long does it last, and does the trade it funds pay for the borrowing?
Are cash flow loans secured or unsecured?
Usually unsecured, because the need is short and the amounts are modest relative to the business. Lenders rely on recent bank statements or open banking data to see money moving through the account, and almost always take a director personal guarantee in place of security. Where the gap sits inside unpaid invoices specifically, funding the invoices directly can release cash without new unsecured debt.
Can I get a cash flow loan to cover a quiet season?
Yes, and seasonality is one of the classic cases: the costs of trading run through the quiet months while the revenue arrives in the busy ones. The discipline is to size the borrowing against the documented seasonal dip and repay it out of the strong season it funds. A gap that repeats every year is often better served by a revolving facility you draw and repay each cycle than by a fresh loan every time.
When is a cash flow loan the wrong answer?
When the gap is not a timing gap. Borrowing covers a difference between when money is earned and when it arrives; it cannot fix a business that spends more than it earns. If the cash position worsens every month with no defined event to repay from, more debt raises the fixed outgoings and brings the crunch forward. Run the numbers honestly first, and if the trend is structural, address costs or pricing before borrowing.
Who can apply through FundBiz?
UK limited companies, LLPs and partnerships of 4 or more partners only. Sole traders are outside our scope. Typical lender asks for cash flow lending: around 6 months or more of trading, turnover evidenced through business bank statements or open banking, and a director personal guarantee. Checking eligibility uses a soft search with no credit-file footprint.
See what your business qualifies for
Open the eligibility checker →Soft search, no credit-file footprint. Limited companies, LLPs and partnerships of 4+ only.
Last reviewed: 14 July 2026. Product boundaries are indicative; individual lender criteria vary.