Income Withholding for Support (FL-195) tells an employer that the court made an order for you or the other person in the case to pay child support. What form should I complete to have federal taxes withheld from my monthly pension payment?Complete the applicable lines: 1. I elect not to have income tax withheld from my pension or annuity. Take the first step to collect child support. You must have a federal and California state tax withholding form on file with LACERA. Under most circumstances, retirement allowances are taxable under both federal and State of California income tax laws. Attach copies of your pay stubs for the last two months and proof of any other income. Take a copy of your latest federal tax return to the court hearing. Form 587, the payee agrees to promptly notify the withholding agent of any changes in the facts.