Do you or anyone you know have some structured settlements or annuity payments to collect? I did not know that you can opt to sell it and just find a great funders or brokers then you will be assured of the money you deserve. I am not sure though how it works, but there are websites where you can get settlements quotes for free.
Information on the income tax and tax payments. Estimated tax payments are payments that you have to do to IRS, if the money is taken from your paycheck. In fact, this way you do your own withholding of payments, rather than the employer to do so.