AP can perform the entire authorization function or selected portions of the process in cooperation with your host system. And, because the Visa DPS authorization system is flexible, you may customize support to meet your specific business requirements.
If desired, you can request voluntary Federal tax withholding from your monthly Social Security benefits. You may find doing this easier than paying quarterly estimated tax payments. See http://www.socialsecurity.gov/planners/taxwithold.htm.
The Social Security withholding tax is an amount deducted from your paycheck and used to fund any potential Social Security benefits that you might be eligible for. All people legally working in the United States are required to pay into the social security system, and there are generally no exceptions.