@Jim Stanley Keep in mind any expenses of your SDIRA asset must be paid for by the account that owns that asset. 

My custodian does not have a money market or similar sweep account to keep idle cash earning.

Some costs are eliminated (such as 'soft charges') while others are accounted for in the interest rate. 

There is an amount that you can distribute from an IRA account to purchase a personal residence.You then might be able to turn the personal residence into an investment property.Best of luck.

Quote from @Sharon Bancroft: @Cameron MarmonI had this same situation and my tax accountant filed the change for me ( one time filling) and we now file it on our personal as a disregarded entity.

I’ve got her dealing with 8 properties which have individual accounts.

However, a good real estate accountant is worth what you pay them because they will save you time and money. 

They get an ACH from my tenant in their account same day, but won't do the same into my account.

Make sure that your tax accountant understands this. 

Hi Natasha,Here are some key points to consider about setting up a Mexican corporation:Setup Costs: $1,500–$3,000 USDOngoing Costs: $1,000–$2,000 USD/year (accounting and tax filings)Benefits: Tax deductions for expenses like maintenance, repairs, and managementBest for: Multiple properties or income-generating investmentsWhile a corporation is ideal for managing multiple properties, it’s NOT required to obtain an RFC.