I Am Self Employed With Tax Write Offs - How To Calculate Income

To qualify for a mortgage how do self employed small business owners with tax writeoff calculate their income? Buying a home while self employed is harder than if used to be if you do not have much money in the bank and you write everything off. You will now have to show income to the mortgage underwriter if you want to buy a home. Lenders have tightened down lending criteria due to the recent mortgage meltdown.

I'm self employed, can I get a mortgage?