Cash flow management is the practice of tracking and forecasting the timing of money coming in and going out, so that you can always pay what is due. A profitable company can still run out of cash if customers pay late, stock sits on shelves or a large VAT bill lands in a thin week. Profit is an accounting result; cash is what you can spend.
This guide shows how to build a simple forecast, which levers actually change your cash position, what to watch each week and how software helps. It is written for owners and finance leads of small and mid-size companies, not for treasury departments.
Profit and cash are not the same thing
You record a sale when you invoice it. You receive the cash when the customer pays, perhaps 30 or 60 days later. Meanwhile you may already have paid the supplier, the staff and the rent. That gap between spending and collecting is what cash flow management covers.
Several things push profit and cash apart: unpaid invoices, stock bought ahead of sales, equipment purchases, loan repayments (capital repayments are not an expense but they do leave your account), VAT collected and held until the return is due, and owner drawings or dividends. If your management accounts show a healthy profit and the bank balance keeps shrinking, one of these is usually the explanation.
The three cash flow categories
Accountants split cash flow into operating, investing and financing activity. It is a useful way to see where money moves.
- Operating: customer receipts, supplier payments, wages, rent, VAT and tax paid.
- Investing: purchase or sale of equipment, vehicles, property or software development.
- Financing: loans received and repaid, owner contributions, dividends.
For day-to-day management, most of the action is operating cash. Investing and financing items are lumpy and known in advance, so put them in the forecast as soon as they are planned.
Build a rolling weekly forecast
A forecast does not need to be sophisticated to be valuable. A rolling 13-week view, updated weekly, is enough for most small companies. Follow these steps.
- Start with the actual bank balance today, not the ledger balance.
- List every open sales invoice with its due date, and adjust the expected receipt date for customers who usually pay late.
- List every open supplier bill and when you intend to pay it.
- Add fixed items: payroll and the related tax and pension payments, rent, loan instalments, insurance, subscriptions.
- Add VAT payments on their due dates, and any corporation tax instalments your accountant advises.
- Add expected sales that are not yet invoiced, using a cautious estimate.
- Calculate the closing balance for each week and mark the weeks where it falls below your minimum buffer.
Each week, replace the oldest week with actuals, add a new week at the end and note where reality differed. Over a few months you learn how much to trust each customer's due dates.
A worked example
This example uses invented figures to show the mechanics. Assume a small distributor opens the week with £18,000 in the bank. Over the next four weeks it expects customer receipts of £9,000, £14,000, £6,000 and £15,000. Payments are £11,000 in week 1 (suppliers), £12,000 in week 2 (suppliers and rent), £21,000 in week 3 (suppliers, payroll and a £4,000 VAT payment) and £8,000 in week 4.
| Week | Opening | Receipts | Payments | Closing |
|---|---|---|---|---|
| 1 | £18,000 | £9,000 | £11,000 | £16,000 |
| 2 | £16,000 | £14,000 | £12,000 | £18,000 |
| 3 | £18,000 | £6,000 | £21,000 | £3,000 |
| 4 | £3,000 | £15,000 | £8,000 | £10,000 |
Nothing looks wrong at month end: the balance recovers to £10,000. But week 3 closes at £3,000, and if the £6,000 receipt due in week 3 arrives a week late, the account goes overdrawn. The forecast gives you a fortnight's notice to move a supplier payment, chase an invoice or arrange a short facility before the problem arrives.
Levers that change your cash position
When the forecast shows a gap, you have a limited set of levers. Know them before you need them.
| Lever | What you do | Trade-off |
|---|---|---|
| Invoice faster | Invoice on delivery or milestone, not at month end | Needs sales and operations to share data promptly |
| Shorten terms | Ask for deposits, shorter terms or direct debit | May lose price-sensitive customers |
| Chase systematically | Reminder before due date, call at 7 days overdue | Takes discipline and a clear owner |
| Extend supplier terms | Negotiate longer terms with key suppliers | Relationship cost; do not stretch beyond agreement |
| Reduce stock | Order closer to demand, clear slow movers | Risk of stock-outs; see inventory management methods |
| Finance the gap | Overdraft, invoice finance, short loan | Cost of borrowing; arrange before you are in trouble |
Metrics worth watching every week
A handful of numbers tells you whether cash is healthy. Keep them on one page.
- Cash balance and the lowest projected balance in the next 13 weeks.
- Overdue receivables, with the largest five debtors named.
- Days sales outstanding: average days from invoice to payment.
- Payables due in the next 30 days.
- Stock value and how much has not moved for 90 days.
Trends matter more than single readings. If days sales outstanding creeps up each month, your collection process is slipping even if no single customer looks alarming.
Common mistakes
The most frequent mistake is forecasting from the ledger instead of the bank. Another is treating every invoice as paid on its due date. A third is forgetting lumpy outflows such as quarterly VAT, annual insurance and holiday pay. Finally, many owners build a forecast once and never update it, so it quietly stops being true. A rough forecast updated weekly beats a perfect one updated quarterly.
How software helps
A spreadsheet works while you have a few dozen open items. Beyond that, the effort of collecting figures from invoices, bills, payroll and stock is the real cost. We built Dika Ops so that invoices, purchase orders, stock and the ledger sit on one record, which means receivables and payables are already in one place when you build the forecast. See the finance module for what it covers today. Dika Ops is in closed beta with a waitlist.
Cash planning also depends on clean books at the end of each period; our month-end close checklist covers that routine, and choosing accounting software helps if your current tool is the bottleneck.
Frequently asked questions
What is cash flow management in simple terms?
It is the process of forecasting and controlling when money enters and leaves your business. The aim is to have enough cash to pay what is due at every point, not just a good profit at year end.
How often should I update my cash flow forecast?
Weekly for most small businesses. Replace the oldest week with actual figures, add a new week and review the lowest projected balance. Businesses with tight margins or seasonal swings may check more often.
How many weeks should a forecast cover?
Thirteen weeks is a common horizon because it covers a full quarter, including a VAT cycle. Add a longer, rougher annual view for planning purchases and borrowing.
Why am I profitable but short of cash?
Typically because customers pay later than you pay suppliers, stock is tying up money, or loan repayments and equipment purchases are not expenses in the profit and loss, and tax is paid after it is charged. A cash forecast shows which of these applies.
How can I improve cash flow quickly?
Invoice sooner, chase overdue accounts, ask for deposits on large orders and review what stock has not moved. These actions need no new financing and can release cash quickly; check the effect in your own forecast.
What cash buffer should I hold?
There is no universal figure. A common approach is to hold enough to cover one payroll cycle plus the next VAT payment, then adjust for how predictable your receipts are. Discuss the level with your accountant.
Is cash flow the same as the cash flow statement?
No. The statement is a historic report of cash movements by category. Cash flow management is the forward-looking routine of forecasting and acting. You use the statement to check your forecasts, not to run the business day to day.
Next step
Open a spreadsheet today, enter the bank balance and the next 13 weeks of known receipts and payments, and find your lowest week. If your data is spread across tools and you want it reported in one place, our data and reporting team can help, or start from our homepage to see how we work.
