The short answer

Start with the assets you expect to replace, estimated installed costs and a review date—not a universal percentage of rent.

Calculator, coins, glasses, and a red pen on a lined notepad.
Illustrative stock photo · Photo: Tara Winstead / Pexels · Pexels License

Price the work, not just the box

  • Include delivery, installation, removal and likely access work in the estimate.
  • Use a planning horizon, clearly labeled as an assumption rather than a predicted failure date.
  • Review estimates when equipment condition or contractor pricing changes.

IRS asset records include acquisition cost and improvements. [1]

Illustrative example: a $2,400 installed replacement expected in four years suggests $50 a month before inflation or interest. Keep emergency cash separate. This calculation is a budgeting convention, not a deductible expense or a reliability forecast.

Sources

This article was generated by AI using the sources below. Editorial standards.

  1. What kind of records should I keep? — IRSSupports the attributed passage: IRS asset records include acquisition cost and improvements. The practical workflow and labeled examples are the publication’s own applications, not source-reported cases. Source checked Sep 8, 2026.

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