Cash flow problems: practical options for UK businesses

Updated September 2026

When cash flow gets tight, the order of operations matters: first slow the money leaving, then speed up the money arriving, and only then decide whether short-term funding fits. Borrowing to cover a structural loss usually makes the problem worse; funding a timing gap in an otherwise healthy business is what short-term finance is for.

Below are the practical steps owners take when the bank balance stops covering the month, and the funding options that fit each kind of gap.

Is this a timing gap or a structural problem?

A timing gap means the business earns enough over a quarter but the money arrives after the bills do — a strong trading month is coming, an invoice is due, a seasonal peak is ahead. A structural problem means the business spends more than it earns regardless of timing. Funding suits the first; only cost-cutting or restructuring fixes the second.

A quick test: write down expected money in and out for the next 8 weeks, week by week. If the total in exceeds the total out and the problem is which week things land in, a short-term facility can bridge it. If the total out wins even in a good period, borrowing adds a repayment to a business that already cannot cover its bills.

What can I do before borrowing anything?

Several steps cost nothing, and businesses in this position commonly take them before borrowing anything. Suppliers, landlords and HMRC all respond better to an early conversation than to a missed payment.

Chase overdue invoices in a structured way: statement, call, then a firm date. Late payers respond to routine.
Ask key suppliers for extended terms for a defined period — 30 to 60 days of breathing room, agreed in writing.
Talk to HMRC about a Time to Pay arrangement before a VAT or PAYE deadline passes, not after. HMRC agrees instalment plans routinely when approached early.
Review subscriptions, software seats and standing orders. Most businesses find monthly spend that outlived its purpose.
If card sales are a big share of revenue, check when your provider actually pays out — moving from 3-day to next-day settlement changes the shape of the week.

Which funding options fit which cash flow gap?

Different products fit different gaps. The table below matches the common situations to the products UK lenders offer for them.

Situation	Option that usually fits	Why
Customers pay on invoice, slowly	Invoice finance	Releases cash tied up in unpaid invoices rather than adding new debt
Revenue is card sales, dip is short	Merchant cash advance	Repayments track daily card takings, so quiet weeks cost less
One-off bill (VAT, corporation tax)	VAT / tax funding	Spreads a fixed bill over instalments matched to its size
Recurring seasonal trough	Working capital facility	Arranged before the dip, drawn only when needed
Stock must be bought before the peak	Stock funding	Bought against a defined sell-through plan

Which of these fits a negative cash flow month?

A negative month has a shape, and each product is built for one shape. The question to answer first is where the missing money is: owed to you by customers, still to come through the card terminal, opening in the same month every year, or sitting in a tax bill. The four descriptions below are facts about how each product is sized and repaid, checked in September 2026, and none is a recommendation; the lender decides the case and the choice stays yours.

Invoice finance is sized on the sales ledger. A lender advances a share of each unpaid business-to-business invoice, typically 80% to 90% of its value, and releases the balance less its fee when the customer pays, so a firm whose customers settle at 60 days borrows against work already invoiced rather than against next month's hope. Our panel holds 20 invoice finance lenders with product limits spanning £500 to £25 million; 15 will fund a business trading under a year, 14 a start-up, 8 accept minor adverse credit and 17 do not require a homeowning director (checked September 2026; panel composition changes over time).

A merchant cash advance is sized on card takings and repaid as a share of each card sale, so the repayment shrinks in a quiet week and grows in a busy one. 365 Finance publishes a share of typically 5% to 15% of card sales, a floor of 6 months' trading and £10,000 a month in card sales, and a range of £10,000 to £500,000; YouLend publishes a ceiling of £2,000,000 and no floor (both read 8 September 2026). The shape fits a short dip in a business whose card sales are otherwise steady. It does not fit a business whose card sales are the thing that fell, because the advance is a percentage of a number that is now smaller. Advances sit inside our unsecured panel of 55 lenders, 21 of which read a business trading under a year (checked September 2026).

A revolving facility is agreed once and drawn when the gap opens, with interest only on the balance drawn, which is why it suits a gap that repeats: the January trough, the quarter when a big customer always pays late. iwoca's Flexi-Loan is the published example, at £1,000 to £1,000,000 with interest charged only on the drawn balance (iwoca.co.uk, 8 September 2026). On our panel, 36 unsecured lenders carry a product covering £25,000 over terms of 1 to 72 months (checked September 2026). The facility is arranged in a good month, which is the point; a business already in the bad month is arranging it late.

HMRC Time to Pay is not a product and involves no lender. It is an instalment plan agreed with HMRC for a tax bill, with interest running at HMRC's late payment rate, 7.75% from 9 January 2026 under the base-rate-plus-4-points formula that has applied since 6 April 2025 (gov.uk, read 8 September 2026). It fits the month where the negative number is the VAT quarter, the PAYE run or the corporation tax bill, and it funds nothing else: not wages, not stock, not a supplier. A business that would rather keep HMRC paid in full and owe a lender instead can spread the same bill over 3 to 12 months with VAT or tax funding, at the lender's fixed cost rather than HMRC's interest.

The missing money is	Shape that matches	Sized on	Where it comes from
Owed by customers on invoice	Invoice finance	The sales ledger	20 panel lenders (checked September 2026)
Still to come through the card terminal	Merchant cash advance	Monthly card takings	Inside the unsecured panel of 55
A gap that opens every year	Revolving facility	Bank statements and accounts	36 panel lenders at £25,000 (checked September 2026)
A VAT, PAYE or corporation tax bill	HMRC Time to Pay, or tax funding	The bill itself	HMRC at 7.75% interest, or a lender at a fixed cost

What the market data says about gaps like yours

Cash flow is the single most common reason British businesses borrow, which is worth knowing if the request feels like an admission of failure. On the SME Finance Monitor's figures, 58% of businesses seeking finance wanted it for working capital, against 31% for fixed assets and 28% to invest in growth. You are in the majority, not the exception.

The product you pick moves your odds more than how hard you push. 96% of asset finance applications succeed against 60% of bank loan applications, because in asset finance the security is the kit rather than the trading position. Invoice finance sits in a similar place for the same reason: UK Finance members had 40,100 businesses on invoice finance or asset-based lending, with £22.7bn advanced in a year against invoices and assets.

On our own panel, a £25,000 gap is covered by 36 unsecured lenders over terms of 1 to 72 months, with published rate floors from 4.1% and a median floor of 19.2% (checked September 2026). Invoice-backed routes are also softer on newer businesses: 15 of our 20 invoice lenders will fund a business trading under a year, against 21 of the 55 unsecured lenders (checked September 2026).

One thing those numbers cannot tell you. A short facility taken to survive a genuine dip is a different animal from a short facility taken because last quarter was also short. If this is the second one in a year, the conversation to have is with an accountant first and us second, and we will say so on the phone.

When is borrowing for cash flow a bad idea?

Borrowing for cash flow is a bad idea when there is no specific, dated plan for the money to come back. Warning signs: the funding would cover ongoing losses rather than a defined gap; a second facility would be repaying a first; or the repayment only works if the best-case month happens. In those situations, speak to an accountant or an insolvency practitioner early — options narrow the longer a business waits.

The panel behind this page

Through our broker network we place cases with a panel of 200+ UK lenders offering 1,800+ products, from high-street banks to specialist funds. Working capital cases go to our unsecured panel of 55 lenders and our invoice panel of 20 (checked September 2026; panel composition changes over time). We check criteria first and approach only the lenders whose requirements you fit. The full roster, category by category, is published in our lender directory.

Frequently asked questions

What is the fastest way to fix a short-term cash flow problem?

Usually a combination: chase overdue invoices with firm dates, agree extended terms with one or two key suppliers, and contact HMRC about Time to Pay before any deadline passes. These cost nothing. If a genuine timing gap remains, short-term funding matched to the gap (invoice finance for slow payers, a merchant cash advance for card-revenue dips) can bridge it.

Can I get business funding with cash flow problems?

Often yes, if the underlying business is sound. Lenders look at recent trading (bank statements, card takings) more than at the balance on a bad day. A business with steady revenue and a clear reason for the gap is fundable; a business whose outgoings exceed income in a normal month generally is not, and borrowing would make that worse.

Will HMRC really agree to a payment plan?

HMRC agrees Time to Pay instalment arrangements routinely for businesses that approach them before the deadline with a realistic proposal. Interest applies but penalties are usually avoided. Approaching HMRC after a missed deadline is significantly harder.

What UK business funding is there against unpaid invoices?

Invoice finance, in three published forms. Factoring, where the lender advances against the ledger and collects from your customers; invoice discounting, where you keep collecting and the arrangement stays confidential; and selective or single-invoice finance, where one invoice is funded on its own. Advances typically run at 80% to 90% of the invoice, with the balance less the fee released when the customer pays. Our panel holds 20 invoice finance lenders with product limits from £500 to £25 million, and 15 of them fund a business trading under a year (checked September 2026). The customers who owe the money are assessed as closely as the business applying.

What are the emergency borrowing options for a small business in a negative cash flow month?

The quickest published routes are the ones sized on data the lender can read the same day. YouLend publishes approval in as little as 24 hours and funds in as little as 48 hours after approval; 365 Finance approval within 24 hours; iwoca an offer within hours and funds typically in hours once approved; Funding Circle a decision in as little as 1 hour with funds typically in 48 hours (all read 8 September 2026). Those are best-case figures for a clean application with a live bank connection. A tax bill has a route that involves no borrowing at all, HMRC Time to Pay, at 7.75% interest from 9 January 2026. Emergency speed and a sound reason for the gap are separate questions, and a lender reading the bank feed asks the second one.

Which business funding options are based on sales history?

Three shapes are sized on what the business has already sold rather than on security. A merchant cash advance is sized on monthly card takings, with 365 Finance publishing a floor of £10,000 a month over 6 months of trading. Revenue-based finance takes a share of total revenue rather than card sales alone. Invoice finance is sized on invoices already raised, so the sales history is the ledger itself. Term loans and revolving facilities read sales history too, through bank statements and accounts, but price on affordability rather than taking a share of sales; Capify, for instance, asks for 12 months of statements and £10,000 a month in turnover (read 8 September 2026). Asset finance is the exception, sized on the equipment rather than the sales.

Is CapExpand FCA regulated?

CapExpand Ltd is not directly authorised by the Financial Conduct Authority. CapExpand Ltd (FRN 1060885) is an Appointed Representative of White Rose Finance Group Limited, which is authorised and regulated by the Financial Conduct Authority (FRN 630772). That appointment means White Rose Finance Group Limited is responsible for our credit broking, and both firms appear on the Financial Services Register at register.fca.org.uk. We are a credit broker, not a lender.

Sources

Market figures are quoted as published by the named source. Panel counts cover available products only.

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