It is possible to qualify for a mortgage using the 2 year average of investment income from tax returns (dividends, interest, cap gains, etc). You can also qualify using assets as income, even for a FNMA loan. I forget the exact calculation but I believe they take the total 401k/IRA balance, subtract 10% for the penalty if you're under 60, then subtract some additional amount to account for taxes/fluctuations, then divide by 360 months (30 years). And then you can count that amount as monthly income. Hope that made sense.