You do not need to show anything for 2017, just the most recent brokerage acct statement to verify brrw owns additional assets that can be sold.

FNMA:

Capital Gains Income

Income received from capital gains is generally a one-time transaction; therefore, it should not be considered as part of the borrower’s stable monthly income. However, if the borrower needs to rely on income from capital gains to qualify, the income must be verified in accordance with the following requirements.

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Verification of Capital Gains Income

Document a two-year history of capital gains income by obtaining copies of the borrower’s signed federal income tax returns for the most recent two years, including IRS Form 1040, Schedule D.

Develop an average income from the last two years (according to the Variable Income section of B3-3.1-01, General Income Information (7/25/2017)), and use the averaged amount as part of the borrower’s qualifying income as long as the borrower provides current evidence that he or she owns additional property or assets that can be sold if extra income is needed to make future mortgage loan payments.

Note: Capital losses identified on IRS Form 1040, Schedule D, do not have to be considered when calculating income or liabilities, even if the losses are recurring.

Due to the nature of this income, current receipt of the income is not required to comply with the Allowable Age of Credit Documents policy. However, documentation of the asset ownership must be in compliance with the Allowable Age of Credit Documents policy (see B1-1-03, Allowable Age of Credit Documents and Federal Income Tax Returns (10/24/2016), for additional information).

Original question:
borrower has provided 2016 and 2015 tax returns. He has capital gains from stock sales for both years. I used a 24 month average of the schedule D income. Is this ok to use along with the brokerage acct statement showing a balance of nearly $1M? Do we need to show any 2017 or ytd info or is 2016 or 2015 tax returns sufficient?