Cash-out refinance mortgage interest tax credit

[Sivakumar Ganapathy]

All,

I'm pretty amazed at the collective strength of such an amazing community. After spending a whole couple of days reading through various forum posts, I'm still not clear on how people who invest in 100s of investment properties, deal with their taxes.

My biggest question is this: Suppose, I refinance my existing primary residence or an investment property and end up using cash-out to buy another investment property. Would I be able to obtain tax credit on the mortgage interest? 

2nd question: Can I do this as a chain? ie, cash-out re-fi primary residence to buy 1st investment property. After that, cash-out refi 1st investment property to buy 2nd property and so on. 

Would I be able to deduct interest on all these loans (without any limits)? If not, is it best to get individual loans on each investment property I choose to buy?

Thanks and apologize if this has already been covered some place else. 

Cheers to the community!

Shiv.