Understanding CapEx Reserve Percentage
How we calculate. CapEx reserve % = reserves ÷ effective gross income × 100. See our methodology and accuracy policy .
Real-world scenario: A typical CapEx Reserve Percentage case uses annual capex reserves 6000 and effective gross income (egi) 100000. Enter the same figures below to reproduce the worked path.
What is CapEx Reserve Percentage?
A planning metric for roofs, HVAC, flooring, and other capital items—not the same as OpEx.
- Reserves ≠ OpEx
- Use EGI or NOI consistently—this form uses EGI
- Age/condition drive needs
The Formula
Worked Example
Common Use Cases
- Underwriting: reserve assumptions
- Owner budgets: capital planning
- Lender stress: CapEx haircuts
Pro Tips
- Inspect deferred maintenance
- Don’t double-count in OpEx
- Update after major projects
| Scenario | When to use |
|---|---|
| Percent of a number | Finding a part of a whole (tax, tip, score) |
| Percent change | Comparing old vs new values |
Limitations: CapEx Reserve Percentage results are educational real-estate planning aids—not appraisals, loan offers, or investment advice. Confirm figures with qualified professionals.
Common mistakes
- Swapping part and whole: The denominator must be the full total, not a subset.
- Rounding too early: Carry extra decimal places through multi-step work before rounding the final percent.
- Mixing percent and decimal forms: Enter rates in the format the calculator labels expect.
The worked example for capex reserve percent was verified with the calculator form on this page—enter the same values to confirm the result.
When to use this calculator
- Use this page when your wording matches capex reserve percent and the form labels on screen.
- Use percent of a number for “what is X% of Y?” problems.
- Use number is what percent when you know part and whole and need the percent.
Still unsure about capex reserve percent? Start with the quick answer above, then open the linked calculator that matches your wording.
❓ Frequently Asked Questions
How do I use this capex reserve percent calculator?
For capex reserve percent, enter the values labeled on the form, then press Calculate. Compare the result to the worked example on this page.
What formula does this page use?
See the quick answer and formula box above for capex reserve percent—the same percentage calculator expression is applied to your inputs.
What if my result looks wrong?
When checking capex reserve percent, re-check part vs whole (or rate vs base), rounding, and whether percents were entered as 25 rather than 0.25 when the form expects percents.
Authoritative References
For real estate investing concepts, consult:
- National Association of Realtors — market context
- Investopedia — NOI — net operating income basics
- CFPB — homebuying education