November 16, 2018 14:59 Updated Follow You can log on to your secure online account to change your federal income tax withholding election. Alternatively, you may print off the Form W-4P, which is available to download from the IRS website here. Related articles How are federal tax withholding rates for my INPRS retirement benefit calculated? Where can I find additional information on federal income tax withholding? Will my tax withholding change? What if I don’t know my username and password to log on to my PERF or TRF account? How do I retire from the Public Employees' Retirement Fund?