If you are self-employed or receive 1099 income, then you need a two-year track record. Lenders go by what you declare to the IRS as income, since that is documentable. Since some self-employed people overstate their expenses, this may understate your income. Look at the Schedule C of your tax returns for the last two years and the number at the bottom that says "profit" is your annual income. You can add any depreciation to that figure. Add them together and divide by twenty-four.
There are variations and exceptions (like those who own their own corporations) but the above should cover most people.
