Key Cash Flow Metrics for Angel Investors

The total amount of cash a company spends each month to remain operational, typically categorized as gross burn (total expenses) and net burn (expenses minus revenue). Investors scrutinize this metric to gauge spending efficiency and immediate liquidity needs, ensuring the startup is not consuming capital wastefully during the seed stage.

A projection of how many months a startup can continue operating before running out of cash, calculated by dividing current cash reserves by the monthly net burn rate. This is arguably the most critical timeline metric for angels, as it determines the urgency of the next fundraising round and the time available to achieve key milestones.

Net Dollar Retention measures the percentage of recurring revenue retained from existing customers over a specific period, including expansions and contractions. A rate above 100% indicates that the startup is growing revenue from its existing base without acquiring new customers, signaling strong product-market fit and low churn.

The total cost of sales and marketing efforts needed to acquire a new customer, including ad spend, salaries, and tools. Angel investors look for a low CAC relative to customer lifetime value to ensure the business model is scalable and that marketing spend yields a positive return on investment over time.

The total revenue a business can expect from a single customer account throughout their relationship, calculated by multiplying average purchase value by purchase frequency and customer lifespan. Investors use LTV to determine the long-term profitability of the customer base and assess whether the company can sustainably grow its revenue.

A performance metric that compares the total value of a customer to the cost of acquiring them, with a healthy ratio typically being 3:1 or higher. This ratio helps angels evaluate the efficiency of the sales funnel and the potential for high margins, indicating whether the startup can profitably scale its operations.

The percentage of total revenue remaining after deducting the cost of goods sold (COGS), representing the direct costs attributable to the production of goods or services. High gross margins suggest strong pricing power and operational efficiency, providing the flexibility needed for marketing and growth investments in early stages.

A measure of the amount of cash generated by a company's normal business operations, indicating whether sufficient cash is being generated to sustain operations and grow the company. While early-stage startups may not have positive operating cash flow, tracking this trend helps investors understand the path to profitability.

A metric that expresses the time (in days) it takes for a company to convert its investments in inventory and other resources into cash flows from sales. For hardware or inventory-heavy startups, a shorter CCC indicates better efficiency in managing working capital and reducing the need for external financing.

Payments received by a company for products or services that have yet to be delivered, representing a liability on the balance sheet. For subscription-based models, high deferred revenue provides visibility into future cash inflows and indicates strong pre-sales momentum, which reduces risk for early-stage investors.

The cash a company generates after accounting for cash outflows to support operations and maintain its capital assets, calculated as operating cash flow minus capital expenditures. Although rare in very early stages, angels monitor FCF trends to identify when a startup begins generating surplus cash that can be reinvested or returned to shareholders.

A SaaS benchmark where a startup's growth rate plus its profit margin (or free cash flow margin) should equal or exceed 40%. This composite metric helps angels quickly assess whether a company is balancing rapid growth with financial discipline, signaling a sustainable business model capable of long-term success.

The percentage of subscribers who cancel their subscriptions or stop doing business with the company during a given time period, including both customer and revenue churn. Low churn rates indicate high customer satisfaction and product stickiness, which are essential for stable, predictable cash flow streams valued by investors.

While not a direct cash flow metric, the efficiency of capital structure impacts cash flow through dilution and option pool sizes. Angels examine how effectively equity is used to retain talent and raise funds, as excessive dilution can hinder future fundraising rounds and impact the final return on investment.

The point at which total revenue equals total expenses, meaning the company is no longer losing money on each unit sold. Investors look for a clear, realistic timeline to break-even to understand when the startup will become self-sustaining and no longer require additional external capital infusion.

The average number of days it takes a company to collect payment after a sale, indicating the efficiency of its billing and collections process. For B2B startups with longer sales cycles, a low DSO ensures that revenue is realized as cash quickly, improving liquidity and reducing the need for working capital loans.

The difference between a company's current assets and current liabilities, representing the liquidity available to fund day-to-day operations. Positive and growing working capital suggests a startup has enough short-term assets to cover its short-term debts, reducing financial risk and providing a buffer against unexpected expenses.

A metric that measures how fast a company moves deals through its sales pipeline to revenue, calculated using deal size, win rate, sales cycle length, and number of opportunities. High sales velocity indicates an efficient sales engine that generates cash flow quickly, allowing for faster scaling and better resource allocation.

A measure of how much capital a company burns to generate a dollar of new annual recurring revenue, calculated by dividing net burn by net new ARR. This metric helps angels evaluate capital efficiency, with lower multiples indicating that the startup is generating growth without excessive cash consumption.