According to the British Business Bank, cash flow issues or late payment were reported as an obstacle by 22% of smaller UK businesses in Q3 2025, up from 19% in Q3 2024. For small business owners, this can make it harder to keep enough cash available to cover regular expenses, even when the business is making sales and bringing in work.
However, late customer payments aren’t the only reason cash flow problems can happen. There are several factors that can affect the cash available to your business, and some may not be obvious until they start putting pressure on your finances.
Keep reading to understand what could be affecting your cash flow.
Key Takeaways
- Cash flow problems happen in a business when there isn’t enough cash to pay for expenses when they’re due.
- Small businesses can run out of cash when customer payments are delayed, costs rise, tax bills are not planned for or cash flow is not forecast.
- Warning signs of cash flow problems include relying more on overdrafts or short-term borrowing, delaying supplier payments and being unsure whether you can cover upcoming expenses.
- If cash flow becomes difficult to manage, getting professional accountancy support from Surrey Accountancy Limited can help you understand your cash position and plan for future commitments.
What Is a Cash Flow Problem?
A cash flow problem is when a business doesn’t have enough cash available to pay its bills and other expenses when they’re due.
Generally, a business can experience either positive or negative cash flow. Positive cash flow means more money is coming into the business than going out, while negative cash flow means more money is going out than coming in.
However, positive or negative cash flow doesn’t necessarily mean a business has enough cash available to meet its payments when they are due. The timing of money coming in and going out also matters.
As a business owner, you may experience cash flow problems for different reasons. These pressures can be harder to absorb when you have less cash available to cover a gap.
Some reasons a small business may have cash flow issues include:
Customers Pay Late
As a small business owner, one major reason you may experience cash flow problems is late customer payments. When customers pay late, you are left waiting for money your business has already earned while your own bills and expenses still need to be paid.
This becomes more difficult when several invoices are overdue at once, as the cash available to meet your regular outgoings can fall below what you need. The longer those invoices remain unpaid, the harder it can be to keep up with your financial commitments.
Long payment terms can create a similar pressure, even when customers pay within the agreed timeframe. If you have to wait 30, 60 or 90 days to receive payment, you still need to cover your costs during that period.
For a small business with limited cash reserves, even a temporary delay in incoming payments can leave little room to absorb unexpected expenses or changes in your usual income.
Cash Flow Isn’t Being Forecast
Another reason you may experience cash flow problems is that you are relying on your current bank balance rather than looking ahead. Your balance tells you how much cash is available today.
However, it doesn’t show whether you’ll have enough left to cover upcoming bills before expected customer payments arrive.
A cash flow forecast gives you a clearer view of when money is expected to come into your business and when it needs to go out. This can help you spot a potential shortfall weeks or months before it happens.
Without this forward view, you may only realise there’s a cash flow problem when you’re already struggling to meet your commitments.
Costs Are Rising
In April 2026, 40% of trading businesses reported that the prices of goods or services they bought had increased compared with the previous month.
For a small business, this can mean paying more to deliver the same product or service without receiving any additional cash from customers.
Sadly, the pressure isn’t limited to one type of expense. You may be dealing with higher material prices, energy bills, wages, subcontractor fees or insurance premiums at the same time.
If these increases aren’t reflected in your pricing or spending, they can reduce the cash available to meet your other commitments.
Prices and Margins Haven’t Been Reviewed
You may have increased your prices before, but when was the last time you checked whether they still cover what it actually costs to run your business?
It’s easy to leave them unchanged when customers are still buying and you’re still winning work. But the cost of delivering that work may have changed since you set those prices.
If your suppliers have increased their prices, your wages have gone up or your other running costs have risen, the amount you keep from each sale will be smaller.
You might not notice the difference straight away. But when that smaller margin applies to every job, it can gradually put pressure on your cash flow. That’s why pricing shouldn’t be something you set once and forget.
If you’re not sure whether your prices still leave enough room after your costs are covered, the trained accountant at Surrey Accountancy Limited can help you work out where your pricing needs to change.
Tax Bills Aren’t Adequately Planned For
Tax payments can become difficult to manage when you have not separated the money needed for them from the cash you use to run your business.
This can happen easily when you are focused on paying suppliers, staff and other expenses, particularly after a period when your business has been busy.
If you are a sole trader, for example, your Self Assessment tax and National Insurance are based on your business profits. If you are VAT-registered, you also need to account for the VAT you collect and pay what is due to HMRC by the relevant deadline.
If you employ staff, PAYE also needs to be considered as part of your regular cash commitments. This means not all the money in your bank account is necessarily available to spend.
So, if you use it to cover other costs instead, you may find yourself short when the payment becomes due.
Growth Is Consuming Cash
As a small business owner, you might expect your cash position to improve because you’re taking on more work. However, growth can require you to spend money before you receive it.
As your workload increases, you may need to buy more materials, bring in staff or subcontractors, purchase equipment or take on other costs to fulfil new orders.
At the same time, your customers may not pay you until the work is completed, or they may have payment terms that give them several weeks to settle their invoice.
This means you could have more orders, more sales and more work to complete, but still need extra cash to keep the business moving. If you don’t have enough money to cover these costs while you wait for payment, taking on more work can put pressure on your cash flow.
Seasonal Income Creates Gaps
If your business has busy and quiet periods, you cannot always expect the same amount of cash to come in each month. Your sales may fall during quieter periods, but many of your regular costs will continue regardless of how much work you have.
You may still need to pay rent, wages, insurance, utilities and other ongoing expenses while waiting for business to pick up again. If you haven’t kept enough cash from your stronger trading periods to cover these costs, a quieter month can quickly affect your finances.
Cash Flow vs Profit: What’s the Difference?
As a business owner, it’s important to understand the difference between cash flow and profit. This is because you may make a profit from your business but still struggle to pay your bills when they are due.
So, what exactly are profit and cash flow? Profit is what your business earns after its costs have been deducted from its income, while cash flow tracks the money moving into and out of your business.
The distinction becomes clearer when you look at when you receive payment for your work. For example, you may complete a £10,000 job and spend £7,000 on the costs directly associated with delivering it.
This leaves £3,000 before other business expenses are taken into account, so the job has generated a profit.
However, if your customer has not paid you yet, the £10,000 from the job is not available to spend. You may still need to pay suppliers, staff and other business expenses while waiting for the payment.
As a result, you can have a profitable job but not enough cash available to meet your immediate commitments.
In simple terms, profit shows whether your business is earning more than it costs to operate, while cash flow shows whether you have enough money available to pay what your business owes when those payments are due.
What Are the Warning Signs of Cash Flow Problems?
Generally, no business suddenly experiences cash flow problems. Instead, the pressure often builds over time, and you may start noticing changes in how easily you can manage your regular financial commitments.
Some warning signs that your business may be experiencing cash flow problems include:
- You have less money available in your business than you normally would.
- You are relying more on overdrafts or short-term borrowing to meet immediate needs.
- You are regularly delaying payments to suppliers because you do not have enough cash available.
- You are waiting for customer payments before you can cover your own business expenses.
- You are using money set aside for tax or other commitments to cover immediate expenses.
- You are unsure whether you will have enough cash to cover upcoming bills and other commitments.
Also Read
- Our Top Tips for Maintaining a Healthy Cash Flow
- Why Is Cash Flow Important?
- How to Get Your Business Financially Ready for Growth?
How Can Small Businesses Improve Cash Flow?
Improving your cash flow is about making financial decisions with the future of your business in mind, so an expense or unexpected change doesn’t catch you off guard.
Here are some practical steps that can help you stay ahead:
Forecast Your Cash Flow: Look ahead at your expected income and expenses so you can identify potential cash shortages before they become urgent.
Keep Money for Tax Separate: Our trained accountant, Tiba Al-Khalidy, recommends keeping money for your tax liabilities in a separate business account or sub-account.
This can help you avoid using money needed for VAT, Corporation Tax, Self Assessment or other tax payments to cover everyday business expenses.
Review Your Costs and Pricing: Regularly check what it costs to run and deliver your business’s products or services, and make sure your prices still leave enough money to cover those costs.
Plan Your Major Purchases for the Year: Tiba Al-Khalidy also recommends planning and structuring your finances around major purchases you expect to make during the year.
For example, if you know the business may need new equipment or a replacement vehicle, planning for these costs in advance can help you understand when the money will be needed and how the purchase could affect your cash flow.
This means major purchases become part of your financial plan rather than decisions you have to make at short notice.
Get More Control Over Your Small Business Cash Flow with Surrey Accountancy Limited
You shouldn’t have to make important business decisions without knowing how much cash you will have available.
When you’re focused on serving customers, paying suppliers and keeping your business moving, it can be difficult to step back and understand how your finances will look in the weeks ahead.
Surrey Accountancy Limited can help you make sense of your cash position, identify where pressure may arise and plan for your upcoming financial commitments.
With the right cash flow support, you can make decisions based on what your business can realistically afford rather than what your bank balance shows today.
Ready to take greater control of your business cash flow? Contact Surrey Accountancy Limited today to discuss how our accountancy services can support your business.
Frequently Asked Questions
Why Do Small Businesses Struggle With Cash Flow?
Small businesses can struggle with cash flow when customer payments are delayed, costs rise unexpectedly, sales fluctuate or the business grows faster than its available cash.
Late payments are particularly damaging because they can leave businesses unable to cover bills and other commitments on time.
Why are Small Businesses Struggling in the UK?
UK small businesses are facing pressures including late payments, rising operating costs, taxation, energy prices and weaker customer demand. These pressures can reduce the cash available to cover day-to-day expenses and invest in growth.
What are the Reasons for Cash Flow Problems of a Company?
Common causes of cash flow problems include late customer payments, seasonal changes in sales, unexpected costs, rising expenses and poor cash-flow planning.
Rapid growth can also create pressure when a company has to spend money before it receives payment from customers.
Why Is Cash Flow Important to a Small Business?
Cash flow shows whether a business has enough money coming in to cover its day-to-day expenses and financial commitments.
So, a healthy cash flow helps a small business pay suppliers, staff and bills on time while giving it more flexibility to handle unexpected costs and invest in growth.
How Much Cash Should a Small Business Have on Hand?
There is no single amount that every small business should keep in reserve. The right cash buffer depends on your regular expenses, payment terms, tax commitments, seasonal fluctuations and how predictable your income is.
