Table of Contents
Cash flow is the movement of money into and out of a business. It determines whether the business has enough accessible funds to pay employees, suppliers, tax liabilities, rent, loan instalments and everyday operating expenses.
A company can be profitable on paper but still experience cash-flow problems. This commonly happens when customers are slow to pay, stock absorbs too much working capital or major expenses become due before sales income reaches the bank account.
Improving cash flow therefore requires more than increasing sales. A small business must also manage when customers pay, when suppliers are paid, how much stock is held and how future expenses are forecast.
Why Is Cash Flow Different From Profit?
Profit measures whether a business’s income exceeds its costs over an accounting period. Cash flow measures when money actually enters and leaves the business bank account.
For example, a consultancy may complete £20,000 of profitable work in June. If customers do not pay until August, the consultancy must still fund June and July wages, software subscriptions, rent and tax payments.
The company may therefore report a profit while having insufficient cash available for immediate commitments.
Cash-flow problems commonly arise because of:
- late customer payments;
- long payment terms;
- seasonal sales patterns;
- rapid expansion;
- large stock purchases;
- low profit margins;
- unexpected repairs;
- tax and VAT deadlines;
- excessive loan repayments;
- poor financial records.
Fast growth can increase the risk. A growing business may need to recruit employees, purchase materials or increase advertising expenditure several weeks before the resulting customer income is received.
How Can a Cash-Flow Forecast Help?
A cash-flow forecast estimates how much money is expected to enter and leave a business over a particular period.
Its main purpose is to identify a potential shortage before the business reaches the point where it cannot meet an important payment.
A practical forecast should include:
- opening bank balance;
- expected customer payments;
- cash sales;
- wages and employer costs;
- supplier invoices;
- rent and utilities;
- insurance;
- loan repayments;
- VAT and other taxes;
- equipment purchases;
- owner drawings or dividends;
- unexpected-cost allowances.
The forecast should show the projected closing balance after each week or month. A negative projected balance acts as an early warning that corrective action may be required.
How Often Should the Forecast Be Updated?
A stable business may review its forecast once a month. A seasonal, rapidly growing or financially stretched company may need to update it weekly.
A useful approach is to maintain:
- a detailed 13-week forecast for immediate cash management; and
- a broader 12-month forecast for tax, recruitment and investment planning.
The forecast should be compared with actual results. When a customer pays late or a cost is higher than expected, the forecast should be revised rather than left unchanged.
How Can a Business Get Customers to Pay Faster?
Collecting income more quickly is often the most direct way to improve working capital.
Send Invoices Immediately
An invoice should be raised as soon as the contractual milestone, delivery or service has been completed.
Waiting until the end of the month may add several unnecessary weeks to the payment cycle.
Every invoice should include:
- the correct customer name;
- an invoice number;
- the invoice date;
- a clear description of the work;
- the total amount payable;
- VAT information where applicable;
- the agreed payment deadline;
- bank or payment details;
- the relevant purchase-order number.
Errors can cause avoidable delays. Larger customers may refuse to process an invoice when it does not contain a purchase-order reference or has been sent to the wrong department.
Agree Payment Terms Before Work Starts
Payment terms should form part of the original agreement rather than appearing unexpectedly on the final invoice.
Depending on the type of business, suitable terms might include:
- payment in advance;
- a deposit followed by a final payment;
- staged payments linked to milestones;
- payment on delivery;
- seven-day terms;
- 14-day terms;
- monthly direct debit for ongoing services.
A business does not necessarily need to offer every customer the same credit period. Terms may reflect the customer’s payment history, order value and the level of upfront expenditure required.
Request a Deposit
A deposit can help fund materials, subcontractors and initial labour.
For example, a £12,000 renovation project might use the following schedule:
- 30% when the customer accepts the quotation;
- 40% when an agreed milestone is completed;
- 30% after final completion.
The business receives the same total amount, but it is no longer required to finance the entire project from its existing bank balance.
Make Payment Convenient
Customers may pay more quickly when the payment process is simple.
Suitable methods may include:
- bank transfer;
- direct debit;
- card payment;
- online invoice payment;
- an approved payment link.
Transaction fees, chargeback risks, fraud controls and settlement times should be checked before a payment provider is selected.
How Should a Small Business Deal With Late Payments?
Late payments should be monitored through an aged-debtors report. This shows how much each customer owes and how long the balance has been outstanding.
A consistent collection process may involve:
- sending a reminder before the due date;
- issuing another reminder when payment becomes overdue;
- contacting the customer’s accounts department;
- asking whether the invoice is disputed;
- escalating the matter to a senior contact;
- suspending further credit where the contract permits;
- considering formal debt-recovery action.
The business should distinguish between an administrative delay and a customer who is experiencing genuine financial difficulty.
UK businesses may be entitled to charge statutory interest on qualifying late commercial payments.
The standard rate is generally 8 percentage points above the Bank of England base rate, although different rules may apply when the contract already specifies a qualifying interest rate. Businesses should check the current official late-payment rules before making a claim.
A business should also consider the commercial relationship. Enforcing interest may be appropriate for a repeatedly late customer, while an isolated administrative error may be resolved more effectively through direct communication.
How Can Better Cost Control Improve Cash Flow?
Cost control does not always require major cuts. Small recurring expenses can collectively have a significant effect on the bank balance.
A cost review may examine:
- unused software subscriptions;
- duplicate digital tools;
- energy and telecommunications contracts;
- insurance premiums;
- storage expenses;
- office space;
- advertising with no measurable return;
- courier and delivery costs;
- professional-service retainers;
- vehicle expenses.
The business should separate unnecessary costs from productive investment.
Reducing essential maintenance, effective marketing or skilled staffing may preserve cash temporarily while creating larger problems later.
Practical Cost-Control Example
Suppose a business has controllable monthly overheads of £10,000.
A 5% reduction would retain £500 per month, or £6,000 over a full year.
The savings might come from:
- £150 of unused software;
- £100 from a revised telephone contract;
- £100 from reduced storage costs;
- £150 from changing an inefficient delivery arrangement.
This is an illustrative example. Actual savings will depend on contract terms, operational requirements and cancellation charges.
Business owners looking for further UK-focused growth and financial-management information can visit www.uksmallbusinessblog.co.uk.
Can Increasing Prices Improve Cash Flow?
A business may experience cash-flow pressure because its prices no longer cover increased labour, energy, materials, delivery and administration costs.
Prices should be reviewed against:
- direct material costs;
- employee and subcontractor time;
- overheads;
- payment-processing fees;
- delivery costs;
- customer acquisition costs;
- returns and rework;
- the required profit margin.
Increasing prices can improve cash generation, but the decision should be supported by accurate costing and an understanding of customer value.
Generating more low-margin sales may increase workload without producing enough additional cash.
Revenue Is Not the Same as Useful Cash
Consider two hypothetical orders:
| Order | Revenue | Direct costs | Contribution |
| Order A | £10,000 | £9,000 | £1,000 |
| Order B | £7,000 | £4,900 | £2,100 |
Order A generates more revenue, but Order B contributes more towards wages, overheads, tax and cash reserves.
A business should therefore assess margins rather than judging performance only by total sales.
How Can Stock Management Release Cash?
Stock represents money that has already left the bank but has not yet been recovered through a sale.
Holding too much stock can create:
- storage expenses;
- insurance costs;
- damage or deterioration;
- product obsolescence;
- discounting requirements;
- reduced money for other bills.
A retailer, manufacturer or wholesaler should monitor:
- stock turnover;
- slow-selling products;
- reorder levels;
- supplier lead times;
- seasonal demand;
- minimum-order quantities.
Possible improvements include ordering smaller quantities, clearing obsolete stock and negotiating more frequent deliveries.
A bulk-purchase discount is not always a genuine saving. If the stock remains unsold for months, the business may lose access to cash that is needed for wages, rent or tax.
How Can Supplier Terms Improve Cash Flow?
A business can also improve its cash position by managing when supplier payments leave the bank.
Possible arrangements include:
- longer agreed payment terms;
- monthly rather than annual billing;
- staged supplier payments;
- smaller minimum orders;
- scheduled delivery;
- deposits followed by later balances.
A business should not simply ignore agreed payment dates. Repeated late payment can damage supplier relationships, remove access to credit and disrupt essential deliveries.
The better approach is to speak to suppliers early and agree realistic terms.
How Should Tax and VAT Money Be Managed?
Money expected to be paid to HMRC should not be treated as unrestricted operating income.
A business may reduce the risk of a sudden tax shortage by transferring estimated amounts into a separate savings account.
The amount set aside should reflect accurate financial records and the business’s actual tax position rather than a generic percentage.
Can VAT Cash Accounting Help?
Under standard VAT accounting and VAT Registration, a business may have to account for VAT based on the invoice date, even when the customer has not yet paid.
Under the VAT Cash Accounting Scheme, an eligible business generally accounts for output VAT when customer payment is received and reclaims input VAT when suppliers are paid.
A business can normally join when its estimated VAT-taxable turnover is £1.35 million or less, subject to the scheme’s detailed eligibility and exclusion rules.
Cash accounting may help a business that regularly waits for customer payments. However, it may be less beneficial when suppliers are paid much later or the business frequently reclaims substantial input VAT.
An accountant or tax adviser can help compare the timing effect before the business changes its VAT accounting method.
Should a Small Business Use Finance to Support Cash Flow?
External finance may be appropriate when a business has a temporary and clearly understood working-capital gap.
Possible options include:
- a business overdraft;
- a working-capital loan;
- revolving credit;
- invoice finance;
- asset finance;
- purchase-order finance;
- equity investment.
Invoice finance may allow a business to access part of the value of unpaid customer invoices before the customer settles them.
However, finance introduces additional expenses and obligations.
The business should review:
- interest rates;
- arrangement fees;
- service fees;
- security requirements;
- personal guarantees;
- early-repayment charges;
- the effect on future cash flow.
Borrowing may help bridge a timing difference. It will not correct a business model that consistently spends more than it earns.
Questions to Ask Before Borrowing
Management should establish:
- What caused the cash shortage?
- Is the problem temporary or recurring?
- How much funding is genuinely required?
- How will repayments affect the forecast?
- What happens if sales are lower than expected?
- Are directors required to provide personal guarantees?
Expensive short-term finance can make a problem worse when the underlying cause has not been identified.
What Is a Practical Cash-Flow Improvement Example?
Consider a hypothetical marketing agency that invoices £20,000 per month and gives customers 45 days to pay.
At a stable trading level, approximately £30,000 may remain tied up in unpaid invoices.
The agency introduces several changes:
- new customers receive 30-day terms;
- projects above £5,000 require a 25% deposit;
- invoices are issued immediately after each milestone;
- overdue accounts are reviewed every Monday;
- tax money is transferred to a separate account;
- £400 of unnecessary monthly subscriptions are cancelled.
Reducing the standard payment period from 45 to 30 days could eventually release approximately £10,000 from receivables.
Cancelling £400 of unnecessary monthly expenses could retain another £4,800 over 12 months.
The £10,000 is not additional revenue or profit. It is money received earlier because less cash remains tied up in unpaid invoices.
What Are Common Cash-Flow Misconceptions?
A Profitable Business Cannot Run Out of Cash
- A profitable company can still run out of money when customers pay late or major costs fall due before sales income is received.
More Sales Always Improve Cash Flow
- Additional orders can increase pressure when materials, labour and advertising must be paid for before customers settle their invoices.
VAT Collected Is Normal Business Income
- VAT collected from customers may need to be paid to HMRC. Spending it on general operating costs can create a shortage when the VAT deadline arrives.
An Overdraft Will Solve the Problem
- An overdraft can cover a short timing gap. It cannot correct persistent losses, weak pricing or uncontrolled expenditure.
Cutting Every Expense Improves the Business
- Indiscriminate cost cutting may damage customer service, productivity and future sales. Costs should be assessed according to the value they produce.
Higher Revenue Means Better Financial Performance
- Revenue does not show how much cash remains after direct costs, overheads, tax and finance expenses.
What Warning Signs Suggest a Serious Cash-Flow Problem?
Warning signs may include:
- repeated difficulty paying employees;
- missed tax deadlines;
- suppliers stopping deliveries;
- borrowing to repay existing borrowing;
- directors repeatedly using personal money;
- relying on new customer deposits to complete older work;
- persistent unauthorised overdrafts;
- an inability to produce reliable financial records.
A company that cannot pay debts as they fall due may be insolvent.
Directors should obtain qualified insolvency and legal advice promptly where insolvency is possible. Taking additional credit or continuing to trade without understanding the company’s position may create further risks.
Final Takeaway
Improving cash flow requires consistent forecasting, faster invoicing, disciplined cost control and clear payment terms. Small businesses should monitor money coming in and going out, review overdue debts, manage stock carefully and set aside funds for tax liabilities.
External finance may help with a temporary shortfall, but it should not replace sustainable pricing or profitable trading. By reviewing cash flow regularly and acting early, a business can reduce financial pressure, protect essential payments and make more confident future growth decisions.
Frequently Asked Questions
What Is the Fastest Way to Improve Small-Business Cash Flow?
The fastest actions often include issuing outstanding invoices, collecting overdue accounts, requesting deposits and stopping unnecessary expenditure. The effect depends on how much money is owed and when payments can realistically be collected.
How Much Cash Should a Small Business Keep in Reserve?
There is no universal amount. The reserve should reflect fixed monthly costs, seasonal risks, customer payment times and access to emergency finance.
Can a Small Business Ask for Payment Upfront?
Yes. Payment in advance, deposits and staged payments can be agreed before the contract or order is accepted.
What Can a Business Do When a Customer Refuses to Pay?
The business should confirm whether the invoice is disputed, preserve contractual evidence, follow its collection procedure and consider formal debt recovery or legal advice where appropriate.
Does VAT Cash Accounting Always Improve Cash Flow?
No. It may help businesses that wait for customers to pay, but input VAT is normally reclaimed when suppliers are paid. The overall timing effect should be calculated.
Should a Business Delay Supplier Payments?
A business should not routinely breach agreed terms. It should contact suppliers before the due date and try to negotiate a revised arrangement.
Is Invoice Finance the Same as Additional Revenue?
No. Invoice finance provides earlier access to part of the money already owed by customers. It does not create additional sales or profit.
What Should a Business Do If It Cannot Pay HMRC?
The business should contact HMRC as early as possible, review its cash-flow forecast and obtain professional advice. Ignoring the debt may result in interest, penalties or enforcement action.