Mostly it applies to the real estates. When a company (A) owns big buildings, they do not want to see large depreciation to distort the profit. Meanwhile by depreciation, the value of building declines. In reality, the value of real estate most likely will go up. Thus, company do like to own the R.E. assets as well as for the advantage of tax. That's why they introduce another party (SPE). A pays a small amount of equity in and lease payment to SPE, to make it like lease. For GAAP, A does not need book the assets and no depreciation, which will make profit look bad. However, according to the tax rule (e.g. A associated all risks with the building), A owns the assets that has the tax benefits.
mkgref, I just rephrased what you explained by my own understanding. Does that sound right?
Thanks for your help!