Cash Flow
financeThe net amount of cash moving into and out of a business over a specific period. Positive cash flow means more cash is coming in than going out; negative cash flow means the opposite.
Definition
Cash flow is often described as the lifeblood of a business. A company can be profitable on paper (accrual accounting) while running out of cash, or cash-flow positive while technically unprofitable. This distinction matters because you pay employees, suppliers, and landlords with cash, not with accrued revenue. A profitable business that runs out of cash still goes bankrupt.
Cash flow is divided into three categories. Operating cash flow comes from core business activities (customer payments minus operating expenses). Investing cash flow relates to long-term assets (buying equipment, acquiring companies). Financing cash flow involves debt and equity (loans received or repaid, investor capital, dividends paid). A healthy business generates positive operating cash flow that funds investments and reduces debt.
Cash flow management is particularly challenging for growing businesses. Revenue growth often requires upfront investment in inventory, staff, and marketing before cash from new customers arrives. This growth cash flow gap has killed many profitable businesses. Strategies to improve cash flow include negotiating shorter payment terms from customers, longer payment terms with suppliers, upfront or annual billing, and maintaining a cash reserve.
Formula
Cash Flow = Cash Inflows - Cash Outflows (over a given period) Example
A business collects $320,000 from customers in March, but pays $180,000 in operating expenses, $50,000 in loan payments, and $60,000 for equipment. Cash flow = $320,000 - $180,000 - $50,000 - $60,000 = $30,000 positive.
Related Terms
Burn Rate
financeThe rate at which a company spends its cash reserves, typically measured monthly. It is the most critical metric for startups and pre-profit companies tracking how long their funding will last.
Accounts Receivable
financeMoney owed to a business by its customers for goods or services delivered but not yet paid for. It represents the credit a company extends to its customers.
Accounts Payable
financeMoney a business owes to its suppliers, vendors, or creditors for goods or services received but not yet paid for. It represents the credit extended to the company by its suppliers.
Working Capital
financeThe difference between a company's current assets (cash, receivables, inventory) and current liabilities (payables, short-term debt). It measures the ability to fund day-to-day operations.
Put It Into Practice
Use these calculators to apply cash flow to your own numbers.
Cash Flow Forecast Calculator
Forecast your monthly cash flow, runway, and projected cash balance.
Open calculator →Burn Rate & Runway Calculator
Calculate your startup burn rate, runway, and projected break-even with revenue growth.
Open calculator →Debt Payoff Calculator
Calculate your business loan payoff timeline, total interest, and savings from extra payments.
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