The Supplemental Security Income (SSI)  program pays benefits to disabled adults and children who have limited income and resources. SSI benefits also are payable to people 65 and older without disabilities who meet the financial limits. The maximum benefit in 2015 is $733 per month.
The monthly federal SSI payment amount changes from year to year. Visit http://www.socialsecurity.gov/OACT/COLA/SSI.html  to see the amount for this year.
Many figures used to calculate Supplemental Security Income (SSI) benefits are revised annually by the Social Security Administration, the federal agency that administers the program. These figures are usually updated in October and can be found in the November issue of the Federal Register, the official government source for administrative changes.
You can also find the figures on the SSA website , or by calling the Social Security Administration at 1-800-772-1213, or TTY at 1-800-325-0778 between the hours of 7:00 a.m. and 7:00 p.m. Eastern time.
You must be: Disabled or Legally Blind or 65 or older
Your countable income must be less that the "benefit amount,". Some types or amounts of income are not counted. In some situations, income from another household member may be counted.
Your countable assets not more than:
$2,000 for an individual
$3,000 for a married couple (couple may be either an opposite sex or same sex married couple in many states).
Assets that are not counted:
- A home
- a car (if used for) transportation for you or a member of your household
- household goods and
- personal effects.
Social Security office. Locate your Social Security Office 
- You can appeal any denial, termination, or reduction of benefits
- You must file an appeal within 60 days of the date of the written notice with which you disagree.
- In addition, you have a 5 day "grace period" to allow for mailing the notice to you, making the total amount of time you have to file an appeal 60+5 days.
Source of Funds:
U.S. Government; general tax revenues