How much capital is needed to buy an apartment building?

[Katie Moynihan]

I currently have two renal properties a multi family and a single family and am interested in expanding to something larger. I’m wondering how much liquid capital is needed to purchase an apartment building. I would be looking for a 6+ unit building with 20-25% down. In addition to the down payment I imagine lenders look for a certain amount of reserves. Would I also need cash for repairs in addition to reserves? Is there a good way to calculate what I will need?