Cost estimates must include the costs of alternatives for how many years out?

Cost estimates must include the costs of alternatives for how many years out?

• A. 4
• B. 6
• C. 8
• D. 10

Answer: (B)

When evaluating different options, it’s crucial to project their costs over a consistent future horizon so you can compare like for like. In DoD cost estimation, the costs of alternatives are projected for six years out. This six-year window provides a uniform basis across options to compare all major cost drivers—procurement, operations and maintenance, and support—within the planning, programming, budgeting, and execution process. It also helps incorporate escalation and other financial factors justifyably, without extending so far into the future that estimates become unreliable. Shorter horizons, like four years, may miss long‑term cost differences, while longer horizons (eight or ten years) aren’t the standard, and aren’t typically used for these decision-focused estimates.

When evaluating different options, it’s crucial to project their costs over a consistent future horizon so you can compare like for like. In DoD cost estimation, the costs of alternatives are projected for six years out. This six-year window provides a uniform basis across options to compare all major cost drivers—procurement, operations and maintenance, and support—within the planning, programming, budgeting, and execution process. It also helps incorporate escalation and other financial factors justifyably, without extending so far into the future that estimates become unreliable. Shorter horizons, like four years, may miss long‑term cost differences, while longer horizons (eight or ten years) aren’t the standard, and aren’t typically used for these decision-focused estimates.