Key Takeaways
- True DTI is typically 5-10% higher than lender-calculated DTI — include all obligations.
- A 12-month cash flow projection reveals seasonal patterns and potential shortfalls.
- Stress testing with three simultaneous adverse events reveals true financial resilience.
- A written Financial Policy Statement creates discipline during emotional decision moments.
- Complete these exercises with actual financial data, not estimates, for maximum value.
This lesson provides four hands-on exercises to evaluate your personal financial health and stress-test your readiness for real estate investing. Complete each exercise using your actual financial data for maximum value.
Exercise 1: True DTI Calculation
Calculate your true debt-to-income ratio including ALL obligations — not just the ones lenders count. Include: mortgage/rent, auto loans, student loans, credit card minimum payments, personal loans, child support/alimony, insurance premiums, subscription services, and any other recurring financial obligations.
Divide total monthly obligations by gross monthly income. Most investors discover their true DTI is 5-10% higher than the lender-calculated DTI because lenders exclude certain recurring obligations. If your true DTI exceeds 45%, create a specific plan to reduce it before pursuing investment property.
Exercise 2: 12-Month Cash Flow Projection
Build a month-by-month cash flow projection for the next 12 months. Start with current monthly income, then layer in: all known expenses (fixed and variable), planned savings contributions, debt payments, insurance premiums, and any anticipated changes (raises, job changes, new expenses).
If you own or plan to own investment properties, add: estimated rental income (at 90% collection rate), mortgage payments (PITI), vacancy allowance (8-10% of gross rent), maintenance reserve ($200-$300/month per property), and capital expenditure reserve.
The output should show month-by-month net cash flow and cumulative savings balance. Identify months where cash flow turns negative and plan accordingly.
Exercises 3-4: Stress Test and Financial Policy Statement
Exercise 3: Stress-test your finances by simultaneously modeling three adverse scenarios: (1) 20% vacancy on all investment properties for 6 months, (2) an unexpected $15,000 capital expenditure, and (3) a 10% reduction in personal income. Can your reserves sustain all three simultaneously? How many months before reserves are depleted?
Exercise 4: Draft a Financial Policy Statement for your investment business. Include: maximum DTI ratio, minimum DSCR per property, minimum cash reserves, maximum LTV, insurance requirements, entity structure requirements, and your decision-making process for exceptions (recommendation: no exceptions). This document should be reviewed and signed by all partners and reviewed annually.
Common Pitfalls
Running stress tests with overly optimistic assumptions
Risk: Mild stress assumptions (5% vacancy increase) fail to prepare for realistic adverse scenarios.
Use severe but plausible assumptions: 20%+ vacancy, 30% rent declines, simultaneous personal income reduction.
Creating a Financial Policy Statement but ignoring it when an exciting deal appears
Risk: Every exception erodes the discipline the document provides.
Treat policy violations as non-negotiable. Review and update policies annually, but never override them in the moment.
Best Practices Checklist
Sources
Common Mistakes to Avoid
Running stress tests with overly optimistic assumptions
Consequence: Mild stress assumptions (5% vacancy increase) fail to prepare for realistic adverse scenarios.
Correction: Use severe but plausible assumptions: 20%+ vacancy, 30% rent declines, simultaneous personal income reduction.
Creating a Financial Policy Statement but ignoring it when an exciting deal appears
Consequence: Every exception erodes the discipline the document provides.
Correction: Treat policy violations as non-negotiable. Review and update policies annually, but never override them in the moment.
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Test Your Knowledge
1.What three adverse scenarios should be modeled simultaneously in a stress test?
2.What is the purpose of a written Financial Policy Statement?
3.Why is true DTI often higher than lender-calculated DTI?