Received letter dated 5/20/10 of fully favorable as of 8/4/08. Benefit start date 2/09. I have not received a total benefit amount letter. I have been calling ss office no news they say is in computer.

Last SSA wage letter stated if disabled now would receive 1294 per month. I have 4 children.

Any idea on calculations? When to expect back pay?
And taxes to be paid if this is my only income to be received for 2010?

Thanks