Cash Flow Forecast
/kæʃ fləʊ ˈfɔːkɑːst/
A cash flow forecast estimates future cash coming into and leaving a business, helping founders plan runway and funding needs.
A cash flow forecast estimates future cash coming into and leaving a business, helping founders plan runway and funding needs.
A cash flow forecast is a financial projection that estimates how much cash a business expects to receive and pay out over a future period. It focuses on cash movement, not just profit. For startups and growing companies, this distinction is crucial because a business can be profitable on paper but still run out of cash if customers pay late, costs arrive earlier than expected, or investment takes longer to close.
A forecast usually shows opening cash, expected receipts, expected payments, and closing cash for each week or month. Receipts may include customer payments, grants, loans, investment proceeds, VAT refunds, or asset sales. Payments may include salaries, suppliers, rent, tax, loan repayments, software, marketing, and professional fees.
For Irish founders, the cash flow forecast is one of the most practical management tools available. It helps directors understand runway, make hiring decisions, plan tax payments, negotiate with investors, and spot funding gaps early. It also supports due diligence, loan applications, grant applications, and board reporting.
The forecast starts with the actual cash balance in the bank. From there, the company estimates incoming cash and outgoing cash over the forecast period. Early-stage companies often use a weekly forecast for the next 13 weeks and a monthly forecast for the next 12 to 24 months. The short-term view helps manage immediate survival, while the longer-term view supports strategy.
The best forecasts separate committed items from assumptions. Payroll, rent, contracted software, and known tax payments are usually more predictable. Sales receipts, new hires, fundraising proceeds, and customer payment timing are more uncertain. Separating these categories makes the forecast easier to challenge and update.
Cash flow forecasting should be live, not static. A forecast prepared once for a funding deck is less useful than one updated regularly with actual results. Each update improves the model, reveals whether assumptions were too optimistic, and helps the company respond before a cash issue becomes urgent.
The main benefit is visibility. Founders need to know when cash may become tight, not discover it when payroll is due. A forecast can show that the company has six months of runway at the current burn rate, or that a VAT payment and hiring plan will reduce that runway faster than expected.
It also improves decision-making. Hiring, marketing spend, office commitments, product investment, and founder salaries all look different when viewed through cash timing. A company may decide to delay recruitment, negotiate supplier terms, chase receivables, or raise earlier because the forecast shows pressure ahead.
A credible cash flow forecast also builds confidence with investors and lenders. It shows that management understands the business model, payment cycles, and risks. During fundraising, investors will test whether the forecast ties to revenue assumptions, expenses, and the company's financial statements.
The most common mistake is confusing revenue with cash. A signed contract does not pay salaries until the invoice is issued and collected. If customers pay 60 days after invoice, the cash forecast needs to reflect that delay. Similarly, annual subscriptions paid upfront can make cash look strong even where revenue is recognised over time.
Another mistake is underestimating tax timing. Corporation tax, VAT, PAYE, preliminary tax, and other obligations can create large cash outflows. Founders should include tax payment dates in the forecast and set aside cash rather than treating tax reserves as available operating cash.
Finally, do not rely on one optimistic scenario. A good forecast includes a base case, downside case, and action plan. If sales are delayed or funding slips by three months, the company should know what costs can be reduced and what decisions must be made.
Keep the model simple enough to update. A beautiful spreadsheet that nobody maintains is less useful than a clear weekly model showing actual cash, receipts, payments, and runway.
Reconcile forecasts to bank statements and accounting records. This keeps the forecast grounded in reality and helps catch missing costs, duplicate assumptions, or timing errors.
Finally, review cash flow at board level. Directors have duties to monitor the company's financial position, especially when cash is tight. A regular cash flow forecast helps the board of directors make informed and defensible decisions.
