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Companies showing profit on paper may still lack payroll cash. This is not alarmism. It is a conclusion drawn from observing too many failures.
Cash on hand is the founder's lifeline. Payroll, supplier payments, and bank interest do not wait for pretty financial statements. Check your online banking. How many months can your immediately available cash cover? The rule is simple: below three months triggers a warning.
I. Why Most Founders Misread the Situation
Most founders focus on the income statement. They see profit and assume the business is healthy.
Profit is an accounting view. Cash flow is reality. Goods shipped and contracts signed count as profit on paper, even if the client still holds the funds. The income statement ignores whether cash actually hits your account.
Data from the China Supply Chain Service and Industry-Finance Survey (2026) shows SMEs take an average of 128 days to convert procurement outlays into collected cash. You ship goods, then wait over four months for payment. During those 128 days, payroll, rent, and interest drain actual funds daily.
Worse, many founders review statements only at year-end. For the preceding eleven months, cash inflows and outflows remain opaque. By the time annual reports reveal a shortfall, cash flow has already broken.
High book profit does not equal available cash. This explains why some companies with pristine statements suddenly cannot pay payroll. Founders tracked the wrong metric.
II. What Is Cash Runway
A standard international metric, cash runway, answers one question: How many months can your company survive if revenue drops to zero today?
The formula is straightforward:Cash Runway = Available Cash ÷ Monthly Fixed Expenses。
This metric measures survival duration, not profit volume. For SMEs, staying alive precedes scaling. Secure survival first. Expand later.
Companies with a cash runway below three months cannot absorb shocks. Late client payments, order reductions, or tightened supplier terms can break them.
The formula looks simple. Most companies calculate it incorrectly due to flawed definitions, not arithmetic errors. Veteran CFOs enforce two strict calculation standards below.
III. Defining the Two Standards
The formula is simple. The trap lies in the definitions. A single error distorts your actual financial position.
First, what counts as available cash? Count only bank demand deposits and immediately withdrawable funds. Exclude the following:
· Deposits (bank acceptance deposits, bid bonds) — inaccessible by definition · Frozen funds (judicial freezes, regulatory accounts) · Time deposits (early withdrawal incurs interest penalties; not immediately available) · Customer advances (represent delivered goods owed to clients, not your cash)
Customer advances are frequently misclassified. Funds received increase your balance, but undelivered goods convert them into liabilities. You hold these funds in trust until shipment.
Second, what counts as monthly fixed expenses? Count only unavoidable costs:
· Payroll (including social security and housing funds; non-negotiable) · Rent (contractual obligation) · Loan interest (banks do not wait for collections) · Taxes (due upon filing deadlines)
Exclude raw material procurement. Costs tied to sales volume are variable, not fixed.
IV. Calculation Example
Available cash: 500,000. Monthly fixed expenses: 200,000.
Cash Runway = 50 ÷ 20 = 2.5 months。
This figure means your company survives for 2.5 months with zero incoming revenue.
Do not treat 2.5 months as ample runway. Supplier terms, payroll, and utilities demand monthly payment. A two-month collection delay can break your next payroll cycle. Monitor cash flow monthly, not annually.
Another example: 1,000,000 available cash divided by 250,000 monthly fixed expenses equals 4 months. This falls in the stable but do not expand zone. Note that this metric tracks immediately accessible funds, not total reported monetary assets. Reported balances often exceed usable cash by a factor of two.
V. Applying the Three Thresholds
| Threshold | Status | Founder Action |
|---|---|---|
| Above 6 months | Secure | Execute strategic decisions with confidence. Absorb large client delays. Scale operations moderately. |
| 3 to 6 months | Stable. Do not expand. | Most SMEs operate here. Avoid speculative investments and loss-leading contracts. Strengthen cash flow fundamentals first. |
| Below 3 months | Warning | A single large client delaying payment by 60 days can halt payroll. Focus exclusively on preserving cash inflows. |
Below three months, execute only three actions: accelerate large client collections, pause all non-essential investments, and identify fixed costs to eliminate. Do not discuss expansion at this stage. Cash flow is the corporate lifeline. A broken line renders financial statements irrelevant.
Threshold classification does not require decimal precision. Categorize by range. Calculate monthly using consistent definitions. Do not skip months.
CFO Toolkit | Key Takeaways
Metric: Cash Runway. Formula: Available Cash ÷ Monthly Fixed Expenses. Calculate monthly. Red line: Below three months triggers a warning. Above six months indicates security.
Execution: Calculate at month-end using fixed definitions. Available cash includes only demand deposits and immediately withdrawable funds. Monthly fixed expenses cover payroll, rent, interest, and taxes.
If the result falls below three months, execute immediately: accelerate large client collections, suspend non-essential investments, and audit fixed costs for elimination.
VI. Three Self-Assessment Steps
Step one: Open your online banking portal. Verify immediately accessible balances. Exclude deposits and time accounts.
Step two: List mandatory monthly outflows. Sum payroll, rent, interest, and taxes line by line. Exclude procurement costs.
Step three: Divide your balance by monthly expenses. Identify your threshold category.
A cash runway under three months leaves no buffer. A single 60-day collection delay can sever the entire payment chain.
These steps take ten minutes to complete. You will immediately know whether your position is secure, stable, or warning-level.
Final Notes
Profit is an accounting view. Cash flow is reality. Remember: below three months triggers a warning.
Review these self-assessment questions:
First, how many months of payroll does your truly accessible cash cover?
Second, can you sustain operations if your largest client delays payment by 60 days?
Third, do you track the income statement or the cash flow statement? Relying on the former indicates self-deception.
Fourth, does your company show book profit yet lack payroll funds? This is abnormal. Capital is likely trapped in uncollected receivables.
After reading, open your banking portal and calculate in ten minutes. If you land in the warning zone, remain calm. Accelerate collections, cut expenses, defer investments, and extend your cash runway toward six months.
Next issue: analyze a 120-day client delay. Do you ship the next batch? Discuss in the comments. Share your company's average collection period.
Engage a veteran CFO for oversight before key decisions.
Additional financial diagnostic tools: Aithony.com (paste into your browser to generate a report in five minutes).