Cash flow analysis examines how money actually moves through your business, as opposed to what your income statement claims you earned. It starts with operating cash flow, compares it to net income, and uses six ratios to find where cash is trapped. For most B2B companies the answer is accounts receivable, which is also the fastest line item to fix.
Every finance team has seen the same uncomfortable slide. Revenue is up. Margin is holding. And the bank balance is going the wrong way.
That gap between what the income statement says you earned and what you can actually spend is the entire subject of cash flow analysis. Done properly, it does not just describe the gap. It tells you exactly which line item created it and what to do about it.
This guide walks through what cash flow analysis is, the six steps to run one, the ratios worth calculating, and a worked example of a profitable company quietly running out of money.
What is cash flow analysis?
Cash flow analysis is the examination of how cash actually enters and leaves your business over a period. It uses the cash flow statement as its foundation and asks three questions:
- Does the business generate cash from its own operations, or does it depend on outside money?
- Where is cash getting trapped between the sale and the bank account?
- How long can the business keep operating at its current rate?
Accrual accounting, which nearly every B2B company uses, records revenue at the moment of sale. Cash flow analysis records it at the moment of payment. The distance between those two moments is where most working capital problems live.
Profit is not cash
A company that invoices $1M in March and collects in June reports a strong March. It also has a March payroll to run with no March money. Profit tells you whether the business model works. Cash flow tells you whether the business survives long enough to prove it.
This is not a rare edge case. It is the default state of any B2B company that extends payment terms, which is to say almost all of them.
The three sections of a cash flow statement
Every cash flow statement splits into three parts. Reading them in order is the whole discipline.
Operating activities covers the day-to-day business: cash collected from customers, payroll, rent, supplier payments, taxes. This is the section that tells you whether the business actually works.
Investing activities covers long-term assets: equipment purchases, software capitalization, acquisitions, asset sales. Negative investing cash flow is usually a good sign, because it means you are building something.
Financing activities covers money raised and repaid: credit line draws, loan repayments, equity rounds, dividends, buybacks. Cash arriving here is borrowed or sold, not earned.
The order matters. A business with strong operating cash flow and negative investing cash flow is healthy and growing. A business whose cash increase comes entirely from the financing line is buying time.
How to perform a cash flow analysis, step by step
Step 1: Start with operating cash flow
Pull operating cash flow for the period. Using the indirect method, it is built from net income:
Operating Cash Flow = Net Income + Non-Cash Expenses - Increase in Working Capital
Non-cash expenses are added back, mainly depreciation, amortization, and stock-based compensation. Working capital changes are the interesting part. An increase in accounts receivable is subtracted, because you recorded the revenue and never got the money. An increase in accounts payable is added, because you held onto cash by paying suppliers later.
Step 2: Compare operating cash flow to net income
This single comparison catches more problems than any other. If net income is $420,000 and operating cash flow is negative, something is consuming every dollar of profit before it reaches you.
Healthy businesses show operating cash flow at or above net income. When operating cash flow runs consistently below it, the gap is almost always sitting in receivables or inventory.
Step 3: Analyze working capital trends
Break the working capital adjustment into its components and look at each against revenue growth:
- Accounts receivable. If AR is growing faster than revenue, collections are slipping. Revenue up 12% with AR up 30% means you are selling well and collecting badly.
- Inventory. Rising inventory with flat sales means cash is sitting on shelves.
- Accounts payable. Rising payables improve cash flow in the short run, but stretching suppliers is borrowing, not earning.
Step 4: Evaluate free cash flow
Free Cash Flow = Operating Cash Flow - Capital Expenditures
Free cash flow is what is genuinely available after keeping the lights on and maintaining the asset base. It is the number that funds growth, debt service, and distributions. Negative free cash flow is defensible during a deliberate expansion. It is not defensible when operating cash flow is the part that is negative.
Step 5: Assess financing dependence
Look at how much of your cash position came from the financing section. If the net change in cash is positive but financing inflows exceed it, the operating business consumed cash and borrowing covered the difference. That works until the credit line is drawn or the covenant is tested.
Step 6: Calculate the net change in cash and your runway
Finish with the bottom line: how much did the cash balance move, and at the current burn rate, how long does the remaining balance last? Calculate runway twice, once on operating cash flow and once on free cash flow. The second number is the one that is actually true.
Six cash flow ratios worth calculating
| Ratio | Formula | What good looks like |
|---|---|---|
| Operating cash flow ratio | Operating Cash Flow / Current Liabilities | Above 1.0 |
| Cash flow margin | Operating Cash Flow / Revenue | 10% or higher |
| Free cash flow | Operating Cash Flow - CapEx | Positive |
| OCF to net income | Operating Cash Flow / Net Income | Above 1.0 |
| Cash conversion cycle | DSO + DIO - DPO | Lower, and falling |
| Runway | Cash Balance / Monthly Burn | 12 months or more |
The cash conversion cycle deserves particular attention, because it is the one ratio that decomposes cleanly into things you can change. DSO is how long customers take to pay you. DIO is how long inventory sits. DPO is how long you take to pay suppliers. Of the three, DSO is usually the largest and the one most within your control.
A cash flow analysis example
Northline Supply is a B2B distributor doing $12M a year. Here is Q2.
Operating activities
| Line item | Amount |
|---|---|
| Net income | $420,000 |
| Depreciation and amortization | +$85,000 |
| Increase in accounts receivable | -$610,000 |
| Increase in inventory | -$140,000 |
| Increase in accounts payable | +$95,000 |
| Net cash from operations | -$150,000 |
Investing activities: equipment purchase of $180,000, so -$180,000.
Financing activities: a $500,000 credit line draw against $60,000 of debt repayment, so +$440,000.
Net change in cash: +$110,000.
At a glance, this looks fine. Cash went up. Now run the analysis.
Operating cash flow is negative $150,000 against net income of positive $420,000, which is an OCF to net income ratio of -0.36 against a healthy benchmark above 1.0. Cash flow margin on $3M of quarterly revenue is -5%. Free cash flow is -$330,000. And the entire $110,000 cash increase, plus $330,000 more, came from the credit line.
The cause is visible in one line. Accounts receivable grew $610,000 in a quarter. AR now stands at $1,933,000 against $3M in quarterly credit sales, which is a DSO of 58 days.
Northline is profitable, growing, and funding itself with debt because its customers are 58 days behind. At the current free cash flow burn of roughly $110,000 a month against a $900,000 cash balance, the runway is about eight months.
What the analysis is telling you
Four red flags are worth memorizing, because they show up together:
- Operating cash flow below net income for two or more consecutive periods
- Accounts receivable growing faster than revenue
- Positive net change in cash driven entirely by financing
- Negative free cash flow with no growth investment to justify it
Northline hits all four. The diagnosis is not a profitability problem or a spending problem. It is a collections problem wearing a cash flow problem's clothing.
Why accounts receivable is the fastest lever
Of everything a cash flow analysis surfaces, most items are slow or painful to change. Margin improvement takes quarters. Headcount reduction is a last resort. CapEx is often already committed. Stretching payables damages supplier relationships and eventually your terms.
Receivables are different. The money is already earned, already invoiced, and legally yours. The only thing standing between you and it is follow-up.
Run the numbers on Northline. Cutting DSO from 58 days to 40 days brings AR from $1,933,000 down to $1,333,000. That releases roughly $600,000 in cash, which more than covers the $500,000 credit line draw. No new customers, no price increase, no cost cutting. Just collecting what was already sold.
Forty days is not an aggressive target. It is the middle of the range for most B2B sectors, and teams that follow up consistently reach it. Our guide on how to reduce DSO covers the specific tactics, and the cash collections formula shows how to forecast what will actually land each month rather than what is due.
The obstacle is rarely knowledge. It is that consistent follow-up across hundreds of invoices is genuinely hard to sustain by hand, which is why the reminders that get sent are the ones for the biggest accounts, and the long tail quietly ages into the 90-day bucket.
Automating the inputs
A cash flow analysis is only as current as the data behind it. Most teams rebuild theirs in a spreadsheet monthly, which means the picture is already two to six weeks stale by the time anyone looks at it.
Three things make the analysis continuous rather than retrospective:
- Live AR aging. Pull the aging directly from the ledger instead of exporting it. Your largest working capital driver should not update once a month.
- Automated, consistent follow-up. Every invoice chased on schedule, across email, SMS, and phone, not just the accounts someone remembered. Multi-channel chasing is what closes the long tail.
- Collection-based forecasting. Forecast from actual customer payment behavior rather than invoice due dates. Due dates tell you when a customer promised to pay. History tells you when they will.
Yonovo connects directly to your ledger, including QuickBooks, Xero, NetSuite, and Sage, keeps the AR side of your cash flow analysis current, and runs the follow-up that shrinks the receivables line in the first place.
If your last cash flow analysis showed operating cash flow trailing net income, start with the AR aging. That is where the money is.
Book a demo to see what your DSO would look like with consistent follow-up behind it.
Frequently Asked Questions
What is cash flow analysis?
Cash flow analysis is the process of examining how cash moves into and out of a business over a period, using the cash flow statement as the starting point. It separates cash from operations, investing, and financing so you can see whether the business funds itself or depends on borrowing and asset sales. The goal is to determine whether the company can cover its obligations, fund growth, and survive a slow quarter.
What is the difference between cash flow and profit?
Profit is recorded when a sale is made. Cash arrives when the customer actually pays. A company that invoices $1M in March and gets paid in June shows a profitable March and an empty bank account. This timing gap is why profitable companies fail, and it is the single most important thing a cash flow analysis reveals.
What are the three types of cash flow?
Operating cash flow covers the day-to-day running of the business, including collections from customers, payroll, and supplier payments. Investing cash flow covers the purchase and sale of long-term assets such as equipment and acquisitions. Financing cash flow covers money raised or repaid, including loans, credit line draws, equity, and dividends. Operating cash flow is the one that tells you whether the business works.
How do you calculate operating cash flow?
The indirect method starts with net income, adds back non-cash expenses such as depreciation and amortization, then adjusts for changes in working capital. An increase in accounts receivable is subtracted because you booked revenue without collecting cash. An increase in accounts payable is added because you kept cash by delaying payment to suppliers. The formula is: Operating Cash Flow = Net Income + Non-Cash Expenses - Increase in Working Capital.
What is a good operating cash flow to net income ratio?
A ratio above 1.0 is healthy and means you collect more cash than you book in profit. Between 0.8 and 1.0 is acceptable for a growing business. Below 0.8 signals that revenue is being trapped in receivables or inventory. A negative ratio while net income is positive is a serious warning: you are profitable on paper and burning cash in reality.
How often should you run a cash flow analysis?
Run a full cash flow statement analysis monthly, alongside your close. Review the working capital drivers, especially your AR aging and DSO, weekly. Quarterly is too slow for anything under about $50M in revenue, because a receivables problem that takes three months to surface has already consumed a quarter of working capital by the time you see it.
What are the biggest red flags in a cash flow analysis?
The four to watch are: operating cash flow below net income for two or more consecutive periods, accounts receivable growing faster than revenue, positive net change in cash driven entirely by financing activities, and negative free cash flow with no corresponding growth investment. Any one of these is worth investigating. Two together usually means cash is trapped in collections.
How does accounts receivable affect cash flow?
Accounts receivable is usually the largest swing factor in operating cash flow for B2B companies. Every dollar sitting in AR is revenue you have earned but cannot spend. On $12M in annual revenue, cutting DSO from 58 days to 40 days releases roughly $600,000 in cash without a single new sale. That is why AR is the fastest lever most finance teams have.
