EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) is the measure of operating profitability calculated by adding those items back to net income. It's used widely in valuation (EBITDA multiples for mature companies and PE transactions), debt analysis (debt-to-EBITDA ratios), and cross-company benchmarking, because it removes effects of capital structure and tax jurisdiction. EBITDA is most relevant at later-stage and physical-asset-heavy businesses, and less relevant at early-stage SaaS where contribution margin and unit economics matter more. It is the most-discussed financial metric at mature companies.
The calculation:
Method 1: Net Income + Interest + Taxes + Depreciation + Amortization
Method 2: Operating I...
Founder vs Co-founder vs CEO and Founder: Founder is the origin role, the person who started the company. [Co-founder] is the same role when there's more than one person at the origin (a co-founder is just a founder with company). [CEO and Founder] is the title combination, a founder who also currently holds the CEO job. The cap table and certificate of incorporation determine who's a founder; current employment determines who's a CEO; the two questions are independent.
A founder is a person who started a company by originating the idea, building the first version, and taking the early risk before others joined. It is the company's origin role and, unlike most roles, it does not end when the person stops working there. Once a foun...
MRR (Monthly Recurring Revenue) is the normalized monthly value of a subscription business's recurring revenue at a point in time. It's calculated as the sum of all monthly-normalized subscription contracts: a monthly subscription contributes its full monthly fee; an annual contract is divided by 12 to get its monthly contribution. MRR is used heavily by month-billed SaaS companies and consumer subscription businesses where monthly granularity matters for operating decisions. It is mathematically equivalent to ARR (MRR × 12 = ARR) but with different operational implications because monthly tracking captures shorter-cycle business dynamics. It's the alternative to ARR most useful at consumer subscription, SMB SaaS, and month-to-month bus...
An earnout is a contingent acquisition payment tied to the acquired company hitting post-close milestones over a defined performance period, typically 1 to 3 years. Milestones cover revenue, EBITDA, product launches, customer-retention thresholds, or other operating metrics, and the structure is used to bridge valuation gaps between buyer and seller when the buyer doesn't want to pay up front for value that depends on future performance. It is one of the most-negotiated and least-loved acquisition mechanics, because it transfers performance risk from buyer to seller and gives the seller limited control over the metrics they're now paid to hit.
The typical structure: an earnout represents 10 to 40 percent of total deal value (sometim...
The Jobs Framework (Jobs-to-be-Done or JTBD) is the strategic approach that focuses on the "jobs" customers hire products to do rather than demographics or features. Popularized by Clayton Christensen and Tony Ulwick, the central question is "what job is this customer trying to get done when they hire this product?" The framework provides a customer-outcome lens distinct from feature-focused approaches (what does the product do?) and segment-focused approaches (who is the customer?), arguing that jobs are more stable predictors of demand than demographics or features. It is one of the more-useful strategic frameworks for product and business strategy.
The core concept:
Customers don't buy products; they hire products for jobs...
An Employer Identification Number (EIN) is the 9-digit federal tax ID assigned by the IRS to a business entity. Also called a Federal Tax Identification Number (FEIN), it is required for opening business bank accounts, hiring employees, filing federal tax returns, applying for business credit and loans, obtaining business licenses, and most other institutional business operations. It is the business equivalent of a Social Security Number and one of the first administrative steps after incorporation.
How to obtain an EIN: file IRS Form SS-4, either online (the fastest method; available at IRS.gov, takes about 15 minutes if all info is ready, EIN issued immediately for US-based responsible parties), by fax (1 to 2 business days), by mail ...
Market validation is the process of gathering evidence that a product or business model fits a real market need. It's conducted through customer interviews (validating the problem and customer), MVPs and early product tests (validating the solution), pilots with paying customers (validating willingness to pay), and pre-orders or crowdfunding campaigns (validating commercial demand at scale). The discipline is one of the most-important pre-PMF activities and the bridge between problem discovery (does this matter?) and product-market fit (are customers actively pulling the product?). It is the evidence-gathering that separates validated business hypotheses from unvalidated assumptions.
The validation hierarchy:
Level 1: prob...
A startup accelerator is a fixed-term, cohort-based program that provides funding, mentorship, and a structured curriculum in exchange for equity, ending in a demo day. It is designed to compress a startup's first 6 to 12 months of development into a focused 3-month sprint, providing access to a network of investors and a culminating demo day where the cohort pitches.
The model was created by Y Combinator (founded by Paul Graham in 2005), which set the template most other accelerators have copied. The standard structure is a 3-month program, a small investment (Y Combinator currently invests $500,000 on standard SAFE terms in exchange for 7 percent of the company), weekly office hours with partners, group dinners, and a ...
Foreign qualification is the process of registering a business entity to legally operate in a US state other than the state of incorporation. Also called "registering to do business," "qualifying," or "foreign registration," it is required whenever a company has sufficient business activity (nexus) in another state, typically including having employees, a physical office, holding inventory, generating significant revenue, or having other substantial operations there. "Foreign" in this context means out-of-state, not out-of-country; a Delaware C-corp operating in California needs to foreign-qualify in California.
The requirements: each state defines its own nexus rules, but common triggers include employees working in t...
Quarterly planning is the recurring 90-day cycle of setting OKRs, prioritizing initiatives, reviewing prior-quarter performance, and adjusting tactical execution within the annual strategic framework. Conducted as a 1-2 week process at quarter boundaries, the cadence provides tactical agility (more frequent than annual planning) without overhead (less frequent than monthly). It is widely adopted at growth-stage companies as the operational rhythm that connects annual strategy to execution, and the discipline that distinguishes companies executing well from companies drifting.
The quarterly planning process:
Pre-quarter (week before quarter-end):