Unless you are itemizing your tax return, the interest on the primary is not tax deductible.

When you file your taxes at the end of the year the accountant is going to ask you for your receipts or what and how much you want to write off using deductions.

Leverage and invest at 40x $100 000 properties ($20k down + $5k closing cost, 30 yeas fix rate loan) with a return of 10% where you have better asset protection (my keeping lower equity and higher bank position), you are hedge against inflation (agree with me, in 30 years $1 000 000 purchasing power will be less compare than $1 000 000 today) Here is how looks mathematically:1. 10% on $1 000 000 (10x $100 000) = $100 000 / annually - No interest tax deduction- No loan paydown benefit2. 10% on 1 000 000 (40x $100 000) = $400 000 / annually - debt service + full tax benefits+ loan pay down+ hedge against inflation for 30 years+ better asset protection (by maintaining lower equity  position)   + (not guaranteed of course) if appreciation happens, it happens on the all full asset amount, example:If appreciate 10%:In case "1" you will have 10% on $1 000 000 = $1 100 000In case "2" you will have 10% on all 40x properties (40x $100 000 = 4 000 000) = $1 400 000As far as cash flow, as long you buy "right" CAP 8% and higher you will have stronger cash flow on leveraged asset + all additional benefits.

“ cash flow returns” almost always compare horribly to a simple bank CD after you deduct for insurance, prop taxes< vacancy, capex, prop management (or your personal time.) etc etc etc. 

Bigger Pockets is a great place to find a real estate tax accountant.A good real estate accountant can save you thousands of dollars by leveraging entity selection and formation, tax deductions, cost segregations, bonus depreciation and tax planning.I recommend finding an accountant who specializes in real estate taxation, business taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

He’s also interested in staying in the home if possible and deduct the rent from the balance he owes.

If you’re doing updates to a property, they can provide you with a list of qualifications to help your property be more energy efficient maximizing tax deductions.

Window AC units can indeed be treated as tangible personal property with a 5-yr life and be bonus-depreciated or deducted under Section 179. 

@Steven HsuBigger Pockets is a great place to find a real estate tax accountant.A good real estate accountant can save you thousands of dollars by leveraging entity selection and formation, tax deductions, cost segregations, bonus depreciation and tax planning.I recommend finding an accountant who specializes in real estate taxation, business taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

A good real estate accountant can save you thousands of dollars by leveraging entity selection and formation, tax deductions, cost segregations, bonus depreciation and tax planning.I recommend finding an accountant who specializes in real estate taxation, business taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.