What role do inflation drivers play in operating expense modeling?

• A. They affect both fixed and variable expenses and escalate costs over time.
• B. They have no impact.
• C. They only affect revenues.
• D. They only affect financing costs.

Answer: (A)

Inflation drivers determine how operating costs grow over time in a property model. In practice, you forecast expenses by applying the relevant inflation uplift to nearly every line item, because both fixed and variable costs tend to rise as prices and wages increase. Fixed costs such as salaries, insurance, property taxes, and contractual management fees often have escalators or indexation built in, so they compound year after year. Variable costs like utilities, maintenance, and supplies rise with price levels and usage, and they’re still driven by inflation in long-term forecasts. Because these costs compound, the impact shows up in net operating income and, in turn, asset valuation. So inflation drivers are essential for escalating operating expenses over time, affecting both fixed and variable items rather than being irrelevant to expenses, limited to revenues, or confined to financing costs.