In Adwords you pay per click and you can set a limit to your monthly expenditures.

However, I know it's just a guideline.When my partner combined taxes and some projected expenditures it essentially plowed through 50% of the rental income.I don't think $100/ month allotted for Maint.

In addition to that idea, you do not seem to have money set aside for unit reserves which may erode your profit numbers a bit more or capital expenditures as a whole.

There would have to be enough expenditures that are current deductions.

If its stabilized and you don't expect any major capital expenditures in the next 5-10 years such as a roof, furnace, or renovating any units then somewhere between 5-10% would be a healthy assumption. 

I also don't want to operate under the assumption that I will be able to increase rent over the coming years to accommodate lack of cash flow in the here and now.To that end, I have been trying to determine exactly how much of the cash flow needs to be dedicated to capital expenditures in order to ensure that my cash reserves do not run out, provided that I have no other income streams than my rental properties.

Purchase Details % Purchase Price One Time Monthly Annual Full Market Value $400,000 Assessed Value: $325,000 Purchase Price Percent of Market Value: 92.31% Purchase Price: $300,000 Equity at Purchase: $100,000.00 Down Payment: 20% $60,000.00 Mortgage Amount: 80% $240,000.00 Mortgage Length: 300 25 Mortgage APR: 7.0% Mortgage Payment (Principal Payment) $1,696.27 $20,355.24 Closing Costs: 2.0% $6,000.00 Renovation Costs: 3% $10,000 Out of Pocket Costs: 25% $76,000 Total Renovated Cost: 103% $310,000 Rental Information % # Units Monthly Annual 2% Rent of Purchase Price: 2% $6,000 $72,000 2% Rent of Renovation Cost: 2% $6,200 $74,400 # Units: 11 Unit 1 Rent: 0.17% $525 $6,300 Unit 2 Rent: 0.16% $500 $6,000 Unit 3 Rent: 0.17% $525 $6,300 Unit 4 Rent: 0.16% $500 $6,000 Unit 5 Rent: 0.15% $450 $5,400 Unit 6 Rent: 0.20% $625 $7,500 Owner pays gas, water & electric Unit 7 Rent: 0.31% $950 $11,400 Owner pays gas & electric Unit 8 Rent: 0.31% $950 $11,400 Owner pays gas, water & electric Unit 9 Rent: 0.31% $950 $11,400 Owner pays gas & water Unit 10 Rent: 0.21% $650 $7,800 Owner pays gas & water Unit 11 Rent: 0.21% $650 $7,800 Owner pays gas & water Gross Scheduled Income (GSI): 2.35% $7,275 $87,300 Vacancy % 5.00% 5.00% Vacancy (V) 0.12% $363.75 $4,365.00 Gross Operating Income (GOI) 2.23% $6,911.25 $82,935.00 Average Rent/Unit: 0.59% 661.36 $2,236 Calculated Financials % Monthly Annual Estimated Operating Expenses (OE): ($3,255.22) ($39,062.69) Estimated Net Operating Income (NOI): $3,656.03 $43,872.31 Annual Debt Service (ADS): $1,696.27 $20,355.24 Capital Expenditures $1,747.54 $20,970.50 Estimated Cashflow: $212.21 $2,546.57 Estimated Cashflow per Unit W / Cap Ex $19.29 $231.51 Estimated Cashflow per Unit W / O Cap Ex $1,959.76 $23,517.07 ROI Based on Downpayment 0.35% 4.24% ROI Based on Out of Pocket Costs 0.28% 3.35% Additional Analysis % One Time Monthly Yearly Purchase Price Per Unit $27,272.73 Renovated Price Per Unit $28,181.82 Gross Rent Multiplier (GRM) 3.44 Capitalization Rate 14.62% Debt Coverage Ratio 2.16% Purchase Property?

(capital expenditures, property taxes, etc.)

Any further expenditures may only be to please yourself depending on the area the building is located in.

Here's why (and apologies if this is too Excel geeky):If you do your own bookkeeping in something like QB, and can't easily import transactions, then entering them individually is a pain - especially with multiple cards/jobs, and if you want to track your expenditures at a more detailed level like Drywall, HVAC, framing, etc.Dumping the transactions to Excel allows you to pivot the data by data elements like Month, Job, Department, so that you can generate a summarized journal entry which can then be entered into QB once - you just need to keep the detailed data somewhere accessible for backup.Example:If I pivot my home depot detailed data for March 2015 I see that I had expenditures for one job for the following departments: BLDG.