LTV Explained: How Your Down Payment Changes Everything in RE Investing

Your loan-to-value ratio is the single number that determines your mortgage rate, whether you pay PMI, and how much cash flow you actually keep.

What Is LTV?

LTV = Loan Amount / Property Value × 100

Put 25% down on a $300,000 property and your LTV is 75%. Simple math, massive consequences.

Why LTV Matters More in 2026

At 7.5% rates, the difference between 75% LTV and 80% LTV on a $300K property:

• 75% LTV: $1,573/month PITI, no PMI
• 80% LTV: $1,677/month PITI + $125 PMI = $1,802/month

That $229/month difference is $2,748/year — enough to flip a cash-flowing deal into a negative one.

The LTV Sweet Spots for Investors

75% LTV (25% down): The standard. Best rates, no PMI, DSCR lenders love it. Most investors land here.

80% LTV (20% down): Saves $15K upfront on a $300K property but adds PMI. Monthly cost rises 12-15%. Only worth it if the deal cash flows even with PMI.

70% LTV (30% down): Rates drop another 0.125-0.25%. Cash flow improves but capital is locked up. Better for buy-and-hold than BRRRR.

How LTV Affects DSCR Loans

DSCR lenders calculate differently. At 75% LTV, a $300K property with $2,200/month rent:

• Debt service: $18,876/year
• NOI (after vacancy + expenses): ~$17,500
• DSCR: 0.93 — does not qualify

Drop to 70% LTV (30% down) and suddenly:

• Debt service: $16,516/year
• DSCR: 1.06 — borderline but possible with the right lender

The math shifts with every percentage point. Use the LTV Calculator to find your sweet spot.

LTV and BRRRR Strategy

BRRRR investors care about LTV at the refinance step. If your ARV is $280K and the lender offers 75% LTV refi:

• Max loan: $210,000
• If you're all-in at $195K (purchase + rehab): you pull out $15K profit and have zero capital left
• If you're all-in at $225K: you leave $15K in the deal

The BRRRR Calculator models this exact scenario.

Common LTV Mistakes

1. Ignoring PMI: at 80%+ LTV, PMI costs $100-200/month. That kills thin cash flow deals.

2. Using purchase price instead of appraised value: LTV is based on the LOWER of purchase price or appraisal. If you buy at $300K but it appraises at $285K, your LTV is higher than expected.

3. Forgetting closing costs: your total cash needed is down payment PLUS 2-4% closing costs. Budget for both. Use the Closing Costs Calculator to estimate.

4. Not stress-testing at different LTVs: run the deal at 75%, 80%, and 85% LTV to see where cash flow breaks.

Bottom Line

LTV is not just a lending metric — it is the lever that controls your monthly payment, your qualification, and your actual return. Every 5% change in LTV shifts your cash-on-cash return by 2-4 percentage points.

Run your numbers at multiple LTV levels before committing. The Rental Property Calculator and Cash-on-Cash Calculator both factor in your down payment to show the real impact.

The right LTV is the one where the deal still works under your worst-case assumptions.

All tools free at arvcalc.com.