Direct vs Indirect cash flow forecast: What's the difference and which one do you need?
- Jul 3
- 4 min read
Most finance professionals know the two methods exist. Fewer can explain why it matters which one you use.
Here's the short version: both methods get you to the same cash figure at the bottom. What they show you along the way is completely different. And depending on what you're trying to do with a forecast, picking the wrong one is like navigating with the wrong map.
The indirect method: working backwards from profit
The indirect method derives your cash flows by working backwards from the numbers in your profit and loss statement and balance sheet. You start with your operating profit, add back non-cash items like depreciation and amortisation (these get reported in the P&L but no cash actually leaves the business), and then adjust for movements in working capital.
A few examples of what those working capital movements look like in practice.
If your payables balance fell by £40,000 from one period to the next, it means you've paid out £40,000 in cash to suppliers on top of what's already sitting in your P&L as a cost. That's a cash outflow.
If your inventory balance fell by £30,000, it means stock that was previously tied up on a shelf or in a warehouse is now sitting as actual cash in the business. Positive movement.
If your receivables balance fell by £15,000 (whether because you've tightened payment terms, or because collections have improved), the money you were waiting on from customers is now cash. Also positive.
The indirect method gives you a clear, high-level picture of why cash is different from profit and where those gaps are coming from. It's the method you'll see in the annual reports of any publicly listed company. It's also the one most commonly used for debt covenant calculations.
When used as a forward-looking tool, it typically follows the budgeting cycle. Think 12 months, reported in monthly increments. Useful for longer-term strategic planning, scenario analysis, and communicating with lenders. Less useful if you want to know whether you can make payroll next Thursday.
The direct method: seeing it line by line
The direct method (sometimes called the receipts and disbursements method) does the opposite. Instead of working backwards from profit, it builds the picture from the bottom up. Every line item of cash coming in, every line item of cash going out, shown directly.
Operating receipts. Supplier payments. Payroll. Tax. Loan repayments. Each one listed separately.
You can reconcile the two methods, the total cash flow from operations will be the same number in both. But how you get there is completely different.
Because you're seeing actual line items rather than high-level adjustments, you've got genuine visibility into what's driving your cash position. Not an aggregated working capital movement. The specific payments. The specific collections. The specific timing of everything.
That's what makes it so useful for actually managing your cash flow, rather than just reporting on it.
You won't see the direct method in company annual reports. It's not publicly reported, partly because it would expose too much about how a business operates. It's a management reporting tool, internal by nature. But that's exactly why it's powerful for the people actually running the business.
Choosing between the direct vs indirect cash flow forecast
The honest answer is that you need both, but for different purposes.
The indirect method is your strategic view. Budget-aligned, longer-term, useful for lender reporting, covenant calculations, and understanding how cash tracks against your P&L. It tells you the shape of cash over months.
The direct method is your operational tool. It's the one that tells you what's happening over the next few weeks and whether you've got enough cash runway to cover your commitments.
In my experience, businesses that run into liquidity trouble aren't caught off guard because their annual forecast was wrong. They're caught off guard because they had no direct-method view of what was coming in the near term. They were running on the indirect method alone and didn't see the gap until it was too late.
This is exactly why what practitioners call a 13WCF (a 13-week cash flow forecast) is built on the direct method. It gives you week-level accuracy where it actually matters. The first four weeks typically hit around 95% accuracy. Weeks five to eight tend to run at 85% - 90%. Even weeks nine to thirteen usually land at 70% - 85%, which is far more useful than a monthly indirect view stretched across a 12-month budget.
The indirect method won't tell you to chase that overdue invoice this week. The direct method will.
At 13WEEKS, the direct method is what I build all forecasting work on, and for good reason. When you need to make decisions about the next few weeks of cash flow management, there's simply no substitute for seeing the actual line items.
What this means for you
So, should you choose the direct vs indirect cash flow forecast?
If you're only running the indirect method, you've got a view of cash that's useful for shareholders and lenders. That's not nothing. But it's not the same as having a view of cash that's useful for you, right now, when it matters.
The question worth asking yourself is this: if your business hit a liquidity crunch tomorrow, would your current forecasting give you four weeks of warning? Eight weeks? Or would you find out when the bank account says no?
If the honest answer is that you're not sure, the direct method is what's missing.
Grab my free 13-week cash flow forecast template if you want a working example of the direct method in practice.
I've helped businesses in exactly this kind of situation build proper visibility over their cash position, usually in a matter of weeks. If this resonates with where you are right now, let's have a conversation. I'd want to understand your specific situation before saying anything useful, but if it seems like a fit, we can move quickly.
Comments