I'm Doug, and I'm sorry to hear of the confusion. My goal is to provide you with excellent service today.
You would only see an increase in your social security benefit after retirement and due to ongoing work if one of the years that you work after retirement are in the top 35 years of earnings of your lifetime.
There is however, no effect that the sale of your mother's home would have had on your social security benefit. And, you did not pay FICA taxes on the sale of your mother's home. At most you paid a capital gains tax. So the great increase in income---to the extent that it was based on the capital gain associated with the sale of your mom's home, would not count toward social security benefits because you don't pay social security taxes on capital gains---even though you do pay other taxes.
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I wish you and yours the best in 2016,