How much down payment do you need for an investment property?
More than for a home you live in, because lenders treat rentals as higher risk. On conventional financing the down payment commonly runs about 15% to 25% depending on the number of units, with more units generally meaning more down. On a DSCR loan the down payment is set by the wholesale investor and varies.
The exact conventional down-payment-by-units figures are a Fannie Mae and Freddie Mac rule covered on my conventional loan guide, so I link them rather than repeat them: see the conventional investment property guide. For DSCR, I store the down payment as "varies / verify" and confirm Satori's current program against your deal. Either way, I'll give you a realistic figure for your file instead of a number that may not apply.
How many months of reserves do investors need?
Expect more reserves than for a primary residence. Reserves are measured in months of the new full payment (PITIA), and lenders want to see you could carry the property for a while if a unit sits empty. The more properties you finance, the more reserves a lender tends to want.
On conventional financing the exact reserve months are a Fannie Mae and Freddie Mac rule covered on my conventional loan guide; on a DSCR loan they are a wholesale investor overlay. In both cases I verify the requirement for your scenario rather than print a universal number, because it shifts with the program, the property, and how many financed properties you already have. The financed-property side gets its own financed property limits guide.
Down payment and reserves by path
The quick version: conventional figures are GSE rules I link; DSCR figures are investor overlays I verify. Here's the side-by-side so you can see which lever moves on each path.