However, I have never used a realtor for auctions and tax sale purchases. 

Definitely tread carefully here to avoid any discrimination claims!

For example, this investor that I met recently said not to buy properties at tax auction for 100+ different reasons.

For tax purposes, rental income is generally recognized in the year you receive it, not when it is paid.

If you buy multiple properties, you can spread out your risk and avoid putting too much pressure on a single investment.

@Nicole GrazianoI recommend that you have a consultation with a real estate tax accountant regarding your taxes.Bigger Pockets is a great place to find a real estate tax accountant. 

Give the appropriate notice.Want to avoid squatters? 

By and large, QI's have very high ethical standards, and are sometimes overlooked as the engines of this tax saving tactic.]REPUTATION MARKERS 📊INDUSTRY STANDINGMembership in professional organizationsLeadership roles in FEAEducational contributions to the industryRelationships with major title companiesCLIENT RELATIONSHIPS 👥Testimonials from CPAs and attorneysReferences from title companiesLong-term client relationshipsTransparent fee structuresRELATIONSHIP RED FLAGS 🚩Overly familiar with your realtor/brokerKickback arrangements (illegal!)

Leveraging equity does involve some risk, so it's important to have a sound strategy to avoid overextending yourself.

I"m also seeing people doing STRs to get the tax benefits besides the higher cash flow.