I set up my chart of accounts in QuickBooks to include, among others, two types of accounts: (1) Cost of Goods Sold accounts and (2) Expense accounts.

It is key to be very precise on what these fees are and how they play into your projections.

a) Office Supplies (e.g. stamps, envelopes) b) Software c) Gas/Mileage d) Advertising + Payroll e) Concessions f) Lease loss g) Lease renewal fees12) Lawyer/Law office/Legal fees13) Accounting/Bookkeeping/CPA/Tax preparer/Tax advisorIf you want to be precise, maintain a spreadsheet with the mechanicals that calculates exactly how much you need to put aside, per year, per month, when:

looking for the flow chart.

Include market statistics, building timeframes, rental revenue projections, and your overall property plan.Provide precise financial predictions, including expected rental income, operational expenditures, and cash flow.

See the charts below.

He said that sending more money on top of the monthly payment won't cut it as  the amount must be precised to each month's payment, because the total loan amount varies every month is turns into a challenges trying to find find what the final payment for the month would be.Now he said all that and told us that they have developed a software that does all the calculations for us, of course in order for us to obtain it we needed to sing up for their classes starting at 15k. 

:) @Shaun Reilly ,Precisely everyone gets one.

What I mean by this is look at their stock charts and see if they encountered a big drop thanks to COVID. you'll likely find many REITS and financial stocks that did so.

You are better manually checking similar properties on Vrbo and Airbnb to get more precise data.