Loan to Value is calculated by dividing the total loan amount by the property's appraised or current market value, then multiplying by 100 to get a percentage. In notation: LTV (%) = (Loan Balance / Property Value) x 100. A lower LTV signals that the borrower holds more equity, which reduces lender risk. Most conventional lenders on investment properties cap LTV at 75 to 80 percent, meaning you need at least 20 to 25 percent equity or down payment to qualify. Portfolio lenders and commercial banks sometimes stretch to 85 percent for strong borrowers, but the rate they charge almost always rises as LTV climbs.
LTV matters at every stage of ownership, not just acquisition. When you refinance a rental, the lender orders a new appraisal and recalculates LTV against today's value. If rents and valuations have risen since you bought, your LTV may have dropped substantially, unlocking better rates or a cash-out refinance. Conversely, if market values fall, LTV rises, and you could find yourself unable to refinance or forced to bring cash to the table to stay within lender limits. Private mortgage insurance (PMI) is typically required on owner-occupied properties when LTV exceeds 80 percent, though most investment-property loans skip PMI in favor of simply pricing the higher risk into the rate.
For real-estate investors, LTV is also a quick lever for managing portfolio cash flow. Borrowing at a lower LTV reduces your monthly debt service, which directly improves your debt service coverage ratio (DSCR) and net cash flow. It also leaves a larger equity cushion to absorb value corrections or unexpected capital expenditures. Sophisticated investors track combined LTV (CLTV) when a property carries both a first mortgage and a home equity line, because lenders evaluate total debt against value, not just the first lien position.
Worked example
A landlord owns a duplex appraised at $400,000 and carries a remaining mortgage balance of $280,000. LTV = ($280,000 / $400,000) x 100 = 70%. The property has cleared the typical 75% investment-property threshold, so the owner qualifies for a conventional refinance at competitive rates. If the owner wants to pull cash out and borrow up to the lender's 75% LTV limit, the maximum new loan would be $300,000 ($400,000 x 0.75), releasing $20,000 in equity after paying off the existing balance, before closing costs.