Where the former payee reports commingling of Social Security benefits with other
funds belonging to the beneficiary and is uncertain of the amount of Social Security
benefits conserved, ask the former payee to estimate the amount of savings derived
from Social Security benefits. Accept the estimate if it appears reasonable. If, however,
the former payee is unable to make an estimate or if his/her estimate appears unreasonable,
ask him/her to state the amount of any savings prior to receipt of Social Security
benefits. Apportion the conserved funds on the basis of the amount of money received
from each source.