State | Effective date | Web site |
| California | 1-Jan-16 | http://www.edd.ca.gov/Payroll_Taxes/Rates_and_Withholding.htm |
| Connecticut | 1-Jan-16 | http://www.ct.gov/drs/lib/drs/publications/pubsip/2016/ip2016-1.pdf |
| District of Columbia | 1-Jan-16 | http://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/48494_FR-230_121715 FINAL.pdf |
| Idaho | 1-Aug-15 | http://tax.idaho.gov/pubs/EPB00006_07-30-2015.pdf |
| Illinois | 1-Jan-16 | http://tax.illinois.gov/taxforms/Withholding/IL-700-T.pdf |
| Indiana | 1-Jan-16 | http://www.in.gov/dor/reference/files/dn01.pdf |
| Kentucky | 1-Jan-16 | http://revenue.ky.gov/NR/rdonlyres/07644FF8-0204-48F2-B781-4720C38006C4/0/201642A003TComputerFormula2.pdf |
| Maine | 1-Jan-16 | http://www.maine.gov/revenue/forms/with/2016/16_wh_tab&instructions rev 2015-11-12.pdf |
| Maryland | 1-Jan-16 | http://forms.marylandtaxes.com/16_forms/Withholding_Guide.pdf http://taxes.marylandtaxes.com/Business_Taxes/Business_Tax_Types/Income_Tax/Employer_Withholding/Withholding_Tables/Percentage_Method.shtml |
| Massachusetts | 1-Jan-16 | http://www.mass.gov/dor/docs/dor/forms/wage-rpt/pdfs/circ-m-current.pdf |
| Michigan | 1-Jan-16 | http://www.michigan.gov/documents/taxes/2016WithholdingTables_505482_7.pdf |
| Minnesota | 1-Jan-16 | http://www.revenue.state.mn.us/Forms_and_Instructions/wh_inst_16.pdf |
| Missouri | 1-Jan-16 | http://dor.mo.gov/forms/4282_2016.pdf |
| New Mexico | 1-Jan-16 | http://www.tax.newmexico.gov/witholding-tax-historic-rates.aspx |
| New York | 1-Jan-16 | https://www.tax.ny.gov/pdf/publications/withholding/nys50_t_nys.pdf |
| North Carolina | 1-Jan-16 | http://www.dor.state.nc.us/downloads/nc30_2016.pdf |
| North Dakota | 1-Jan-16 | http://www.nd.gov/tax/data/upfiles/media/2016 Income Tax Withholding Rates and Instructions Booklet.pdf?20151230223403 |
| Oklahoma | 1-Jan-16 | https://www.ok.gov/tax/documents/2016WHTables.pdf |
| Oregon | 1-Jan-16 | http://www.oregon.gov/DOR/forms/FormsPubs/withholding-tax-formulas_206-436_2016.pdf |
| Rhode Island | 1-Jan-16 | http://www.tax.ri.gov/forms/2016/Withholding/2016_Withholding_Booklet.pdf |
| South Carolina (unchanged from 2015) | 1-Jan-16 | https://dor.sc.gov/tax/withholding/forms |
| Vermont | 1-Jan-16 | http://tax.vermont.gov/business-and-corp/withholding-tax |
