For many growing businesses, the challenge isn’t profitability, it’s timing. You might be winning new work and generating healthy margins, yet still feel pressure when payroll, supplier payments or VAT deadlines approach. In most cases, that comes down to a lack of visibility.
A cash flow forecast gives you a clear view of what’s coming in, what’s going out, and when. With that clarity, you can plan ahead rather than react under pressure, while also giving lenders greater confidence in your business.
In this guide, we explain how to forecast cash flow effectively and use it as a practical decision-making tool.
A cash flow forecast is a projection of the money expected to move in and out of your business over a set period.
It helps you understand:
Crucially, cash flow is about timing, not just totals. For example, VAT may be calculated quarterly, but payment is typically due one month and seven days after the quarter ends. Without planning for that gap, cash can tighten quickly.
For growing businesses, cash flow forecasting bridges the gap between historic accounts and future performance.
Effective cash flow management is essential for maintaining stability and supporting growth. A well-structured forecast allows you to:
It’s also a key part of any business funding application. While lenders review historic performance, they also want to understand what’s ahead. A clear and realistic forecast demonstrates:
In short, it shows that your business isn’t just growing, it’s managed. This can materially improve lender confidence when structured correctly.
A common challenge for business owners is reconciling profit with cash position.
Profit is an accounting measure based on historic performance. Cash flow reflects real-time liquidity and future timing.
That’s why businesses often ask, “We’re profitable, so why does cash feel tight?”
Common reasons include:
When considering funding, lenders focus heavily on cash flow, specifically, your ability to meet repayments comfortably. A robust forecast helps demonstrate this clearly.
Before building your forecast, gather accurate and realistic information:
The strength of your forecast depends on the quality of these assumptions.
Overestimating income or overlooking liabilities can weaken both internal decision-making and external credibility. A cash flow forecast should be a live working document, reviewed and updated regularly.
Step 1: Choose Your Forecasting Period
Your forecast should cover at least one full cash cycle, the time between spending money and receiving it back.
Most businesses forecast:
If you’re seeking funding, lenders will typically want at least 12 months of visibility.
Step 2: Forecast Incoming Cash
Map out expected cash inflows based on realistic payment timing, not invoice dates.
Include:
If customers typically pay in 45 days, forecast 45 days. Realistic assumptions improve both accuracy and credibility.
Step 3: Forecast Outgoings
List all expected payments, including:
Rent and utilities
Salaries and subcontractors
Stock and raw materials
Marketing and operational costs
Loan repayments
VAT and corporation tax
Capital expenditure
VAT is a common blind spot because it’s collected before being paid to HMRC, and can make cash look more available than it is if not clearly separated.
Lenders will look closely at tax planning and repayment capacity, so clear VAT and tax forecasting puts you in a stronger position.
Step 4: Calculate Net Cash Flow
For each period:
Income – Outgoings = Net Cash Flow
Carry your closing balance forward into the next period to create a rolling view.
This highlights:
Identifying a gap months in advance gives you options. Identifying it days before payroll limits them significantly.
Even well-run businesses can fall into common traps, such as:
Forecasting invoice dates instead of actual payment timing
Overlooking VAT and tax liabilities
Ignoring seasonality
Treating large costs in isolation
Failing to update forecasts regularly
A forecast is only valuable if it reflects how your business actually operates.
Cash flow pressure typically comes from three areas:
Operating Activities: Day-to-day trading, receivables, wages and supplier payments.
Investing Activities: Capital expenditure such as vehicles, plants or property.
Financing Activities: Debt repayments, dividends or raising capital.
VAT and Cash Flow Planning
VAT requires careful planning:
Separately forecasting VAT can help reduce unexpected pressure on cash.
Working Capital Management
Key drivers of cash flow include:
Small changes in these areas can have a meaningful impact on liquidity, and how lenders assess your business.
Even profitable businesses can experience short-term cash flow gaps, particularly during periods of growth or investment.
If identified early, potential options may include:
A well-prepared cash flow forecast strengthens a funding application by demonstrating:
For growing businesses, this is particularly important, as historic accounts may not fully reflect current performance or future pipeline.
Even with a well-structured forecast, many businesses will identify periods where outgoings temporarily exceed incoming cash. The advantage of forecasting is that it highlights these gaps early, giving you time to act.
In these situations, short-term cash flow solutions can help smooth timing differences without disrupting day-to-day operations. For example, invoice finance can unlock cash tied up in unpaid invoices, while trade or supplier finance can help spread the cost of key expenses. Revolving credit facilities can provide flexible access to funds as and when needed, while unsecured business loans can offer a straightforward way to support short-term requirements without tying up assets. For planned liabilities such as VAT, structured VAT loans can also be used to avoid large one-off payments impacting working capital.
Q: “How often should I update my forecast?”
A: Regularly, typically monthly, or more frequently during periods of change.
Q: “How far ahead should I forecast?”
A: At least one full cash cycle. Many businesses look 6-12 months ahead.
Q: “Do I need complex software?”
A: Not necessarily. Spreadsheets can be effective if assumptions are realistic and regularly reviewed.
Q: “Does forecasting guarantee funding approval?”
A: No. However, a clear and realistic forecast can significantly improve lender confidence when assessed alongside your wider financial position.
Cash flow forecasting is more than an accounting exercise and a core business management tool.
When managed properly, it provides:
Greater financial clarity
Improved planning capability
More informed decision-making
Stronger conversations with lenders
Whether you’re planning for growth, managing tax obligations or reviewing funding options, understanding your future cash position helps reduce uncertainty.
At Charles & Dean, we work with a broad panel of specialist lenders to help structure funding around how your business operates.
If you’re reviewing your cash flow or planning ahead, we can help you understand how funding may fit alongside your forecast and support your plans.
Book a no-obligation consultation or call 01780 763836.
Charles & Dean is a credit broker, not a lender. We do not provide financial advice. All funding is subject to status and approval, and it’s important to consider your wider financial position before entering into any agreement.