This is going to be a wall of text. I have made some effort to verify information, but stuff changes and this post is simply a snapshot. Hopefully the links will remain vaild. I am not an account, tax expert or legal eagle, but I think, if you collect sales tax, even without Nexus (Physical or Financial) you have to remit it to the state. Due you own research or consult an expert!
Alabama
- Registration Requirement: Out-of-state sellers with economic nexus (over $250,000 in sales) must register and collect sales tax.
- Registration Portal: My Alabama Taxes
- Phone: (334) 242-1490
- Email: steve.dubose@revenue.alabama.gov
Alaska
- Registration Requirement: Alaska has no statewide sales tax, but local jurisdictions may impose taxes.
- Registration Portal: Alaska Remote Seller Sales Tax Commission
- Phone: (907) 790-5300
- Email: info@arsstc.org
Arizona
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect Transaction Privilege Tax (TPT).
- Registration Portal: AZTaxes.gov
- Phone: (602) 255-3381
- Email: ask@azdor.gov
Arkansas
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Arkansas Taxpayer Access Point
- Phone: (501) 682-7104
- Email: sales.tax@dfa.arkansas.gov
California
- Registration Requirement: Out-of-state sellers with economic nexus (over $500,000 in sales) must register and collect sales tax.
- Registration Portal: California Department of Tax and Fee Administration
- Phone: (800) 400-7115
- Email: cdtfa@cdtfa.ca.gov
Colorado
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Colorado Department of Revenue
- Phone: (303) 238-7378
- Email: DOR_TaxpayerService@state.co.us
Connecticut
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales and 200 transactions) must register and collect sales tax.
- Registration Portal: Connecticut Department of Revenue Services
- Phone: (860) 297-5962
- Email: drs@po.state.ct.us
Delaware
- Registration Requirement: Delaware has no state or local sales tax.
- Phone: (302) 577-8200
- Email: revenue@delaware.gov
Florida
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Florida Department of Revenue
- Phone: (850) 488-6800
- Email: TAXPAYERASSISTANCE@floridarevenue.com
Georgia
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Georgia Tax Center
- Phone: (877) 423-6711
- Email: taxpayer.services@dor.ga.gov
Hawaii
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect General Excise Tax (GET).
- Registration Portal: Hawaii Tax Online
- Phone: (808) 587-4242
- Email: taxpayer.services@hawaii.gov
Idaho
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Idaho State Tax Commission
- Phone: (208) 334-7660
- Email: taxrep@tax.idaho.gov
Illinois
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: MyTax Illinois
- Phone: (800) 732-8866
- Email: Contact Us
Indiana
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Indiana Department of Revenue
- Phone: (317) 232-2240
- Email: taxhelp@dor.in.gov
Iowa
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Iowa Department of Revenue
- Phone: (515) 281-3114 or (800) 367-3388
- Email: idr@iowa.gov
Kansas
- Registration Requirement: All out-of-state sellers with any sales into Kansas must register and collect sales tax (no threshold).
- Registration Portal: Kansas Department of Revenue
- Phone: (785) 368-8222
- Email: kdor_tac@ks.gov
Kentucky
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Kentucky Department of Revenue
- Phone: (502) 564-5170
- Email: DOR.WebResponseSalesTax@ky.gov
Louisiana
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Louisiana Sales Tax Commission for Remote Sellers
- Phone: (855) 307-3893
- Email: sales.inquiries@la.gov
Maine
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Maine Revenue Services
- Phone: (207) 624-9693
- Email: sales.tax@maine.gov
Maryland
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Maryland Business Express
- Phone: (800) 638-2937
- Email: taxpayerhelp@marylandtaxes.gov
Massachusetts
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: MassTaxConnect
- Phone: (617) 887-6367
- Email: contact@dor.state.ma.us
Michigan
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Michigan Department of Treasury
- Phone: (517) 636-6925
- Email: sales-use-tax@michigan.gov
Minnesota
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Minnesota Department of Revenue
- Phone: (651) 556-3000
- Email: salesuse.tax@state.mn.us
Mississippi
- Registration Requirement: Out-of-state sellers with economic nexus (over $250,000 in sales) must register and collect sales tax.
- Registration Portal: Mississippi Department of Revenue
- Phone: (601) 923-7015
- Email: sales@dor.ms.gov
Missouri
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Missouri Department of Revenue
- Phone: (573) 751-2836
- Email: salesuse@dor.mo.gov
Montana
- Registration Requirement: Montana does not impose a state or local sales tax.
- Phone: (406) 444-6900
- Email: dortaxpayerassistance@mt.gov
Nebraska
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Nebraska Department of Revenue
- Phone: (402) 471-5729
- Email: revenue.salesanduse@nebraska.gov
Nevada
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Nevada Department of Taxation
- Phone: (866) 962-3707
- Email: nevada.taxation@tax.state.nv.us
New Hampshire
- Registration Requirement: New Hampshire does not impose a state or local sales tax.
- Phone: (603) 230-5000
- Email: granitestatehelp@nh.gov
New Jersey
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: New Jersey Division of Revenue
- Phone: (609) 292-6400
- Email: revenue@treas.nj.gov
New Mexico
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect gross receipts tax (GRT).
- Registration Portal: New Mexico Taxation and Revenue
- Phone: (866) 285-2996
- Email: taxation.information@state.nm.us
New York
- Registration Requirement: Out-of-state sellers with economic nexus (over $500,000 in sales and 100 transactions) must register and collect sales tax.
- Registration Portal: New York State Tax Department
- Phone: (518) 457-5431
- Email: DTF.Taxpayer.Inquiries@tax.ny.gov
North Carolina
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: North Carolina Department of Revenue
- Phone: (877) 252-3052
- Email: taxpayer.assistance@ncdor.gov
North Dakota
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: North Dakota Office of State Tax Commissioner
- Phone: (701) 328-1246
- Email: salestax@nd.gov
Ohio
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Ohio Business Gateway
- Phone: (888) 405-4039
- Email: taxpayer.services@tax.state.oh.us
Oklahoma
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Oklahoma Tax Commission
- Phone: (405) 521-3160
- Email: otc.taxpayerservices@tax.ok.gov
Oregon
- Registration Requirement: Oregon does not impose a state or local sales tax.
- Phone: (503) 378-4988
- Email: questions.dor@oregon.gov
Pennsylvania
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Pennsylvania Department of Revenue
- Phone: (717) 787-1064
- Email: RA-RVBTFTEMAIL@pa.gov
Rhode Island
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Rhode Island Division of Taxation
- Phone: (401) 574-8955
- Email: tax.assist@tax.ri.gov
South Carolina
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: South Carolina Department of Revenue
- Phone: (844) 898-8542
- Email: salesuse@dor.sc.gov
South Dakota
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: South Dakota Department of Revenue
- Phone: (800) 829-9188
- Email: dor@state.sd.us
Tennessee
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Tennessee Department of Revenue
- Phone: (615) 253-0600
- Email: revenue.support@tn.gov
Texas
- Registration Requirement: Out-of-state sellers with economic nexus (over $500,000 in sales) must register and collect sales tax.
- Registration Portal: Texas Comptroller of Public Accounts
- Phone: (800) 252-5555
- Email: tax.help@cpa.texas.gov
Utah
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Utah State Tax Commission
- Phone: (801) 297-2200
- Email: taxpayer.services@utah.gov
Vermont
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Vermont Department of Taxes
- Phone: (802) 828-2551
- Email: tax.business@vermont.gov
Virginia
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Virginia Department of Taxation
- Phone: (804) 367-8037
- Email: taxppd@tax.virginia.gov
Washington
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales) must register and collect sales tax.
- Registration Portal: Washington Department of Revenue
- Phone: (360) 705-6705
- Email: taxinfo@dor.wa.gov
West Virginia
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: West Virginia State Tax Department
- Phone: (304) 558-3333
- Email: taxhelp@wv.gov
Wisconsin
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Wisconsin Department of Revenue
- Phone: (608) 266-2776
- Email: DORIncome@wisconsin.gov
Wyoming
- Registration Requirement: Out-of-state sellers with economic nexus (over $100,000 in sales or 200 transactions) must register and collect sales tax.
- Registration Portal: Wyoming Department of Revenue
- Phone: (307) 777-5200
- Email: dor@wyo.gov