Operating expenses (OpEx) are the day-to-day costs of running a business — rent, utilities, salaries, marketing, professional services, supplies. Immediately expensed on the income statement, reducing current period profit. Distinguished from CapEx (capital expenditures, depreciated over years). The OpEx vs. CapEx decision matters for tax timing and financial statement appearance — buying software outright is CapEx (depreciated 3-5 years); subscribing to SaaS is OpEx (immediate deduction). Cloud computing has shifted IT spending from CapEx to OpEx. Operating leverage (fixed vs. variable OpEx) determines profit sensitivity to revenue changes — high fixed OpEx amplifies both gains and losses.
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ARR
Annual Recurring Revenue (ARR) is the annualized value of subscription contracts — the standard metric for SaaS businesses.…
Break-Even Point
Break-even point is the level of sales where total revenue equals total costs — zero profit, zero loss.…
Budget vs Actual
Budget vs Actual (BvA) variance analysis compares budgeted financial performance to actual results, identifying gaps and their drivers.…
Burn Multiple
Burn Multiple is a venture capital metric: Net Cash Burn / Net New ARR — measuring how efficiently…
Burn Rate
Burn rate is the rate at which a startup spends cash beyond what it generates from operations, expressed…
CAC
Customer Acquisition Cost (CAC) is total sales and marketing spend divided by new customers acquired in a period.…
Operating Expense
August 22, 2026 · Aditya Gupta
Corporate Finance
Related terms
ARR
Annual Recurring Revenue (ARR) is the annualized value of subscription contracts — the standard metric for SaaS businesses.…
Break-Even Point
Break-even point is the level of sales where total revenue equals total costs — zero profit, zero loss.…
Budget vs Actual
Budget vs Actual (BvA) variance analysis compares budgeted financial performance to actual results, identifying gaps and their drivers.…
Burn Multiple
Burn Multiple is a venture capital metric: Net Cash Burn / Net New ARR — measuring how efficiently…
Burn Rate
Burn rate is the rate at which a startup spends cash beyond what it generates from operations, expressed…
CAC
Customer Acquisition Cost (CAC) is total sales and marketing spend divided by new customers acquired in a period.…
