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.
If you expect you'll have to pay tax on your benefits this year, you can ask the Social Security Administration to take out withholding. At your request, the SSA will withhold 7, 10, 15 or 25 percent -- there are no other rate options. The alternative is to file estimated tax payments, the same as self-employed people do.