Determining the Required Down Payment
The required down payment for a rental property is determined by the intersection of several variables: the loan program (conventional, DSCR, portfolio, hard money), the property type (single-family, 2-unit, 3-4 unit), the borrower’s occupancy intention (investment vs. primary residence), the borrower’s credit score, the number of other financed properties the borrower holds, and the specific lender’s overlay requirements. Overlay requirements are additional restrictions individual lenders impose beyond the minimum guidelines set by Fannie Mae, Freddie Mac, or the loan program sponsor.
For a conventional single-family investment property, the baseline minimum is 15% of the appraised value or purchase price, whichever is lower. However, a borrower with a 680 credit score putting 15% down on their second financed investment property will face substantially higher loan-level price adjustments than a borrower with a 760 credit score putting 25% down on their first. The LLPA matrix published by Fannie Mae and Freddie Mac specifies the pricing impact for each combination of LTV, credit score, property type, and occupancy status.
When the borrower already holds multiple financed properties (typically five or more), conventional lenders impose additional requirements including a minimum 25% down payment regardless of unit count, a minimum 720 credit score, documented reserves of six months PITI on all financed properties, and no mortgage late payments in the previous 12 months. These escalating requirements make it progressively more difficult and capital-intensive to acquire additional properties through conventional financing.
Down Payment Sources and Documentation
Lenders require full documentation of down payment sources. For investment property purchases, the most common acceptable sources include personal checking and savings accounts with a documented paper trail (typically 60 days of bank statements), proceeds from the sale of other assets (stocks, bonds, real estate), retirement account withdrawals or loans, and equity accessed through a HELOC or cash-out refinance on another property. Each source requires specific documentation to verify that the funds are the borrower’s own assets and not borrowed from an undisclosed source.
Bank statements must show the funds on deposit for at least two statement cycles (60 days) prior to closing, or the borrower must provide a documented paper trail for any large deposits appearing within that window. A large deposit is typically defined as any single deposit exceeding 50% of the borrower’s monthly qualifying income . Unexplained large deposits can delay or jeopardize the loan because they raise questions about whether the borrower is using borrowed funds disguised as savings.
For HELOC-sourced down payments, the lender will include the HELOC payment in the borrower’s debt-to-income ratio calculation. If the HELOC is in a draw period with interest-only payments, the lender uses the interest-only payment. If the HELOC has converted to repayment, the fully amortizing payment is used. This additional monthly obligation reduces the borrower’s purchasing power on the investment property.
Impact on Financing Strategy and Portfolio Growth
The down payment requirement is the primary constraint on how quickly an investor can scale a rental portfolio. An investor with $200,000 in available capital could purchase one $800,000 property at 25% down or potentially two $500,000 properties at 20% down (assuming sufficient reserves and income qualification). The capital allocation decision involves trade-offs between diversification, leverage, cash flow, and reserve adequacy.
Investors pursuing aggressive growth often start with an owner-occupied multi-unit purchase (low down payment), build equity through appreciation and principal paydown, then access that equity via refinance to fund subsequent acquisitions. Each refinance and acquisition cycle requires careful calculation of cumulative reserve requirements, aggregate debt-to-income ratios, and the total number of financed properties relative to conventional lending limits. Investors who exceed conventional limits must transition to DSCR, portfolio, or commercial lending products, which typically require higher down payments but offer more flexibility in qualification criteria.
Related topics include investment property mortgage rules, cash-out refinance on investment property, multi-unit property financing (2-4 units), and scaling a rental portfolio with financing.