On Disability-Benefits-Help.org, users can find an explanation of the formula used to calculate when a person receives his disability payments. The date of payment is based on the recipient's birthday.
The Social Security Administration divides disability payments into three different possible pay dates based on the recipient's birthday. If the recipient was born between the first and tenth days of a month then he receives his payment on the second Wednesday of the month. If the recipient was born between the 11th and 20th days of the month, he receives his benefits on the third Wednesday of the month. Finally, if the recipient was born between the 21st and 31st days of the month then he receives his payment on the fourth Wednesday of the month. If the payment date lands on a federal holiday, then the recipient receives the payment on the nearest preceding day that is not a federal holiday.
The date of payment does not affect the amount of the disability payment. The Social Security Administration requires that a recipient wait at least three days after the payment date to report a failure to receive benefits. However, this situation is rare since most recipients receive payment through direct deposit.