Rental Property Cash Flow and CapEx Reserve Planner
Model rental property cash flow, vacancy, maintenance, capital expenses, reserves, and downside scenarios before buying or holding an investment property.
Prompt Template
You are a personal finance educator helping evaluate rental property cash flow and reserve planning. Build a realistic analysis for this property. **Property type/location:** [single-family, condo, duplex, city/state/country] **Purchase price or current value:** [amount] **Down payment/equity:** [amount or percentage] **Mortgage terms:** [loan amount, interest rate, term, monthly payment] **Expected monthly rent:** [amount] **Current or estimated expenses:** [taxes, insurance, HOA, utilities, property management, maintenance] **Vacancy assumption:** [percentage or local estimate] **Major upcoming repairs:** [roof, HVAC, appliances, plumbing, exterior, unknown] **Capital expense reserve preference:** [conservative, moderate, aggressive] **Local rules/taxes:** [rent control, licensing, short-term rental restrictions, property tax changes] **Goal:** [buy decision, hold/sell, refinance, reserve target, compare properties] **Risk tolerance:** [low, medium, high] Create: 1. **Monthly cash flow table** — rent, vacancy, operating expenses, mortgage, reserves, and net cash flow. 2. **NOI and cap rate estimate** — before debt, with clear assumptions. 3. **CapEx and maintenance reserve plan** — monthly reserve amount, target balance, and likely replacement timeline. 4. **Scenario analysis** — base case, vacancy shock, rent drop, insurance/tax increase, major repair. 5. **Break-even occupancy and rent** — what must be true for the property to avoid negative cash flow. 6. **Red flags** — underfunded reserves, optimistic rent, HOA risk, deferred maintenance, legal/regulatory issues. 7. **Decision framework** — buy/hold/sell questions and what data to verify before acting. 8. **Advisor checklist** — questions for lender, tax professional, insurance agent, property manager, and inspector. State that this is educational analysis, not financial, tax, legal, or investment advice.
Example Output
Rental Cash Flow Snapshot — Duplex
| Item | Monthly |
|---|---:|
| Gross rent | $2,800 |
| Vacancy reserve (7%) | -$196 |
| Taxes + insurance | -$520 |
| Property management (8%) | -$224 |
| Maintenance reserve | -$200 |
| CapEx reserve | -$250 |
| Mortgage payment | -$1,650 |
| **Estimated net cash flow** | **-$240** |
Base Interpretation
The property may look break-even before reserves, but after realistic vacancy, maintenance, and capital expenses it is negative by about $240/month. That does not automatically mean "bad," but the investor needs a clear reason: appreciation, tax strategy, rent growth, or owner-occupancy benefits.
Stress Scenario
A 2-month vacancy plus a $4,500 HVAC replacement would require roughly $9,100 in reserves to avoid credit-card debt or forced selling.
Verify Before Deciding
- Get local rent comps from at least three sources.
- Ask insurance agent about premium increases and landlord coverage.
- Confirm property taxes after sale, not only current owner taxes.
- Have an inspector estimate remaining life of roof, HVAC, water heater, and major appliances.
Tips for Best Results
- 💡Model reserves as real monthly expenses; ignoring CapEx is how rentals cosplay as profitable.
- 💡Use post-sale property tax and insurance estimates, not stale listing numbers.
- 💡Stress test vacancy and one major repair before deciding the cash flow is safe.
- 💡Confirm local legal and tax details with qualified professionals before buying or selling.
Frequently Asked Questions
What is the Rental Property Cash Flow and CapEx Reserve Planner prompt?
Model rental property cash flow, vacancy, maintenance, capital expenses, reserves, and downside scenarios before buying or holding an investment property. It's a free ChatGPT prompt template from our Personal Finance collection — copy it, fill in the bracketed variables, and paste it into your AI tool.
Which AI tools work with this prompt?
It's written and tested for ChatGPT, Claude and Gemini. Any AI assistant that accepts free-form text prompts will handle it well.
How do I customize this ChatGPT prompt?
Replace the bracketed variables — such as [amount], [amount or percentage], [percentage or local estimate] — with your own details before running it. Model reserves as real monthly expenses; ignoring CapEx is how rentals cosplay as profitable.
Is this prompt free to use?
Yes. Every prompt on PromptAtlas is free to copy, customize, and use — no signup required.
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