The IRS’s 2020 employer tax guide, dated December 23, 2019, sets a new withholding process for payroll teams. The redesigned Form W-4 drops withholding allowances and uses five steps; employees complete personal details and sign, with other entries available to adjust withholding. [shared-960a31a950d9c0ad16fa28003455c6c48264107c9f283574b497c6993830540a]
The change falls most directly on newly hired workers first paid after 2019 and employees who choose to revise withholding: both must use the redesigned form. Workers with an earlier valid W-4 do not have to replace it just because the format changed. Employers can continue using the latest valid form on file, sparing existing staff a paperwork round and payroll offices a wholesale conversion. [shared-960a31a950d9c0ad16fa28003455c6c48264107c9f283574b497c6993830540a]
The operational burden shifts to handling two generations of forms. The IRS moved withholding tables and calculation instructions into Publication 15-T, which covers both older W-4s and the redesigned version. That supports continuity, but leaves employers responsible for matching each worker’s form to the right method. The guide permits employers to invite existing workers to switch, provided they explain that it is optional. Whether the simpler form makes withholding easier for workers—or mainly relocates complexity into payroll systems—remains an open question. [shared-960a31a950d9c0ad16fa28003455c6c48264107c9f283574b497c6993830540a]