As published in our previous Year End 2019 newsletter, an update from legacy payroll to Sage 100 Payroll 2.0 may be required in order to comply with the new Form W-4 that went into effect on January 1, 2020. In order to comply with these changes, customers must be on Sage 100 Payroll 2.0 (Version 2018 or higher).
Sage 100 Version 2017 and earlier will not support the additional fields necessary to correctly calculate federal withholding taxes within the system and would need to be calculated outside of Sage 100 and adjusted manually.
Related information from the IRS: FAQs on the New 2020 Form W-4
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