Last Updated: August 28, 2026
Most business owners who run into serious cash flow trouble weren’t spending recklessly. They were growing. New contracts, more staff, bigger supplier orders, and then, almost without warning, the bank account couldn’t keep up. Knowing how to manage business cash flow is what separates businesses that scale confidently from those that lurch from one tight month to the next.
At AVMK Accountants, we work with owner-managed businesses every day that are profitable on paper but permanently anxious about cash. This guide walks through the practical steps to get your cash flow under control, from understanding where you actually stand right now to building the forecasting habits that prevent nasty surprises.
Cash flow is the lifeblood of any business, yet it’s the area most business owners understand least until something goes wrong.
The core issue is timing. Revenue and costs rarely arrive and leave in neat, matching patterns. A client might owe you £40,000 but not pay for 60 days. Meanwhile, your payroll, VAT, and supplier invoices land this month. That gap, between money earned and money received, is where businesses get into difficulty.
Growing businesses are especially vulnerable. Higher turnover means larger invoices going out, but also larger costs coming in. If your debtor days creep up at the same time your supplier payments accelerate, the squeeze can happen fast.
The businesses that handle this well don’t just react to cash shortfalls. They see them coming three months out and act early, renegotiating terms, drawing on a facility, or adjusting their sales pipeline. That kind of visibility comes from having the right processes in place.
Before you can improve anything, you need an honest picture of your current position. That means going beyond your bank balance and looking at the full picture: what you’re owed, what you owe, and when each of those amounts is actually due.
Start by pulling together:
Once you have this data in one place, you’ll start to see the real shape of your cash position. Many business owners find that a significant proportion of their outstanding debtors are overdue, and that chasing those invoices alone would materially improve their cash position.
Profit is the surplus of revenue over costs, calculated on an accruals basis. Cash flow is the actual movement of money into and out of your bank account.
A business can be profitable and cash-poor at the same time. If you invoice a client £50,000 in March, your accounts show that as March revenue, but if the client pays in May, the cash doesn’t arrive until then. Meanwhile, you’ve incurred costs in March and April that need paying now. This is why your P&L alone is an unreliable guide to whether your business can meet its obligations.
HMRC guidance on business record keeping
A cash flow forecast is a week-by-week or month-by-month projection of money coming in and going out of your business. It is not a complicated document. What matters is that it’s accurate, kept up to date, and actually used.
Many businesses build a forecast once and never revisit it. A working forecast is a living document, updated weekly with actual figures and rolled forward continuously.
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A 13-week cash flow forecasting template covers a rolling quarter. This timeframe is long enough to spot problems before they become crises, and short enough that the numbers remain credible.
| Component | What to Include |
|---|---|
| Opening bank balance | Actual balance at the start of each week |
| Expected receipts | Confirmed customer payments, with realistic dates |
| Payroll and PAYE | Fixed payroll costs plus employer NIC contributions |
| VAT payments | Quarterly VAT liability due to HMRC |
| Supplier payments | Scheduled creditor payments by due date |
| Loan repayments | Any finance or asset-based lending repayments |
| Overhead costs | Rent, utilities, subscriptions, insurance |
| Closing balance | Running total to show projected bank position |
The closing balance in each week is the number that matters most. If it turns negative at any point in the 13 weeks, you have advance warning to act, whether that’s accelerating collections, delaying a discretionary purchase, or drawing on an overdraft facility. perform a business audit.
Debtor days measure how long, on average, it takes your customers to pay you. Reducing this number is one of the most direct ways to improve cash flow without winning new business or cutting costs.
Most late payments aren’t deliberate. Clients get busy, invoices get lost, payment runs get missed. A structured credit control process fixes most of this without confrontation.
Before the invoice goes out:
After the invoice goes out:
Structural changes that help:
Simply sending invoices faster and following up consistently reduces average debtor days significantly, translating directly into cash arriving sooner.
The other side of the cash flow equation is what goes out. Managing your outgoings and supplier terms is just as important as chasing money in.
The goal isn’t to delay payments indefinitely, that damages supplier relationships and your credit standing. The goal is to align your outgoings with your inflows as closely as possible.
Practical steps worth taking:
Management accounts are monthly or quarterly financial reports produced for the business owner, not for HMRC or Companies House. They give you an up-to-date view of how your business is performing against budget, including your profit and loss, balance sheet, and cash position.
Without management accounts, most business owners work from a year-old set of accounts and a rough sense of what’s in the bank. That’s not enough information to make good decisions about hiring, investment, or pricing.
Good management accounts should show you:
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When management accounts are produced consistently and on time, cash flow problems rarely come as a surprise. You see the trend building and have time to respond.
At AVMK Accountants, our Virtual Finance Function includes monthly management accounts as standard, alongside cash flow forecasting and proactive financial reporting. The businesses we work with move from reactive to genuinely informed, knowing their numbers before they need them.
Getting your cash flow under control is a process, not a one-off project. Once you’ve built the foundations, the priority is keeping them working consistently.
The businesses that manage cash flow well share common habits. They review their forecast every week, even if only briefly. They close their books promptly at month end so management accounts are ready within two weeks. They treat credit control as a routine operational task, not something that only happens when cash gets tight.
A practical monthly rhythm looks like this:
This rhythm takes less time than most business owners expect, typically a few hours per month. But it produces a fundamentally different quality of financial decision-making.
For businesses that don’t have the internal resource to maintain this consistently, outsourced support from a fractional Financial Controller can provide the structure without the overhead of a full-time hire. As the ICAEW guidance on financial management for SMEs notes, regular financial review is one of the most reliable indicators of business resilience.
| Step | Action | Frequency |
|---|---|---|
| 1 | Update 13-week cash flow forecast | Weekly |
| 2 | Review and chase aged debtors | Weekly |
| 3 | Review management accounts vs budget | Monthly |
| 4 | Review upcoming payments and VAT | Monthly |
| 5 | Assess supplier terms and discretionary spend | Quarterly |
Cash flow problems rarely announce themselves clearly in advance. By the time a business owner feels the squeeze, the underlying issue has usually been building for months. The businesses that avoid this pattern aren’t necessarily larger or more sophisticated, they simply have better visibility and more consistent habits around their numbers.
If your business is growing but your cash position feels unpredictable, AVMK Accountants can help you put the right structure in place. Our Virtual Finance Function gives you monthly management accounts, rolling cash flow forecasts, and a Fractional Financial Controller who understands your business. Book a Financial Clarity Call to see what a more controlled financial position would look like for you.
Profit is the surplus left after deducting your costs from your revenue on paper. Cash flow is the actual money moving in and out of your bank account. A business can be profitable on its accounts yet still run out of cash if customers pay late, stock is tied up, or VAT bills fall due. This is one of the most common reasons growing businesses hit a cash crisis despite strong sales figures. Managing both is essential.
The fastest wins usually come from chasing overdue invoices, shortening your payment terms, and requesting deposits on larger orders. Review your direct debits and subscriptions for anything no longer earning its cost. If you have stock, identify slow-moving items and free up that working capital. On the outgoings side, speak to key suppliers about extending payment terms. Even a few days’ improvement across several areas can make a material difference to your monthly cash position.
At this level, the numbers are large enough that a single late payment or unexpected VAT bill can create a serious shortfall. A cash flow forecast lets you see problems four to twelve weeks before they arrive, giving you time to act rather than react. It also helps you plan for growth, whether that means hiring, investing in equipment, or managing a seasonal dip. Without a forecast, you are making decisions based on your bank balance today rather than your position next month.
If you are VAT-registered, you collect VAT on sales and pay it to HMRC quarterly, or monthly if you opt for monthly returns. The timing mismatch is the issue: you may have already spent that VAT money before the return is due. Setting aside VAT as you invoice, rather than when payment arrives, keeps you from being caught short. Some businesses benefit from the VAT Cash Accounting Scheme, which means you only pay VAT to HMRC once your customer has paid you. Check GOV.UK or speak to your accountant to confirm eligibility.
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