We have seen multiple reports from Sage 100 Payroll users where a payroll check dated on 12/31/2019 via Sage 100cloud Payroll 2.1x has too much federal tax withholding.
UPDATE: Sage has published a hot-fix for Payroll versions 2.19.4 and 2.20
In some cases, reports have mentioned federal income tax withholding that is $100 or more than the prior payroll check.
Sage has an issue report on this which they documented as:
Tax Calculation – New W4 Dependent Amt, Other Income & Deductions Values not pulled into Calculation when check date is 12/31/2019 or 01/01/2020
Federal tax withheld changes on checks dated 12/31/2019 or 01/01/2020
Federal tax calculation amount is wrong on checks dated 12/31/2019 or 01/01/2020
W-4 exemptions are ignored when generating payroll check dated 12/31/2019 or 01/01/2020
According to this knowledgebase entry, expect a hot-fix to be issued around the same time as Sage releases Payroll 2.20 which is expected on or about December 19, 2019.