Approved software developers for corporation tax e-file
To participate in the New York State e-file program, you must use tax preparation software that has been tested by the Tax Department. Our testing process ensures tax returns are properly formatted and can be processed when we receive them. Tax Department testing does not imply that we endorse the quality of the software (see also important information regarding electronic filing).
The software developers and products in the chart below are approved for corporation tax e-file.
The Main forms approved for tax year 2025 column lists all forms that the software developers tested and approved for tax year 2025 only.
| Software developer | Product name | For more information | *Main forms approved for tax year 2025 |
Tax years |
|---|---|---|---|---|
| Thomson Reuters - GoSystem/ONESOURCE 6160 Warren Parkway Frisco, TX 75034 |
GoSystem/ONESOURCE | CS.Service@thomsonreuters.com 1-800-968-8900 |
Extensions |
2023–2025 |
TaxSlayer 945 Broad St Augusta, GA 30901 |
TaxSlayer | www.taxslayerpro.com sales: 1-888-420-1040 customer support: 706-868-0985 |
Extensions |
2023–2025 |
| Thomson Reuters 6300 Interfirst Dr Ann Arbor, MI 48108 |
UltraTax CS | tax.thomsonreuters.com/us/en/cs-professional-suite/ultratax-cs 1-800-968-8900 |
Extensions CT-300, CT-400, CT-3S, CT-3/3M, CT-3A, CT-3A/BC, CT-13, CT-183/183M, CT-184/184M |
2023–2025 |
|
Advanced Tax Solutions, LLC |
MyTaxPrepOffice.com |
www.mytaxprepoffice.com Helpline: support@mytaxprepoffice.com 1-307-414-1211 |
Extensions |
2023–2025 |
|
CCH Incorporated |
CCH Prosystem fx and CCH Axcess | engagetax.wolterskluwer.com 1-800-739-9998 |
Extensions CT-300, CT-400, CT-3S, CT-3/3M, CT-3A, CT-3-A/BC CT-13, CT-33/33M, CT-33NL, CT-33C |
2023–2025 |
| CrossLink Professional Tax Solutions, LLC. 16916 S. Harlan Road Lathrop, CA 95330 |
CrossLink | www.crosslinktax.com 1-800-345-4337 |
Extensions |
2023–2025 |
| CrossLink Professional Tax Solutions, LLC. 16916 S. Harlan Road Lathrop, CA 95330 |
CrossLink Online | www.crosslinktax.com 1-800-345-4337 |
Extensions |
2023–2025 |
|
Thomson Reuters Tax & Accounting |
GoSystem Tax; ONESOURCE Income Tax |
www.thomsonreuters.com |
Extensions |
2023–2025 |
| TaxAct 3200 Olympus Blvd Suite 150 Dallas, TX 75019 |
TaxAct Professional | www.taxact.com/professional 1-319-373-3600 |
Extensions |
2023–2025 |
| TaxAct 3200 Olympus Blvd Suite 150 Dallas, TX 75019 |
TaxAct | www.taxact.com/business-returns 1-319-373-3600 |
Extensions |
2023–2025 |
|
Intuit, Inc. |
ProSeries |
proconnect.intuit.com/proseries |
Extensions |
2023–2025 |
| Universal Tax System, Inc 225 Chastain Meadows Ct NW Suite 300 Kennesaw, GA 30144 |
ATX | taxna.wolterskluwer.com 1-770-857-5000 |
Extensions |
2023–2025 |
| Universal Tax Systems, Inc 225 Chastain Meadows Ct NW Suite 300 Kennesaw, GA 30144 |
H & R Block Premium & Business | taxna.wolterskluwer.com Customer support: 1-800-472-5625 |
Extensions CT-300, CT-400, CT-3/3M, CT-3S, CT-13 |
2023–2025 |
| Drake Software, LLC 111 Technology Drive Franklin, NC 28734 |
Drake Tax | www.drakesoftware.com 1-828-527-8020 |
Extensions CT-300, CT-400, CT-3/3M, CT-3S |
2023–2025 |
| Corptax, Inc. 2100 E. Lake Cook Road, Suite 800 Buffalo Grove, IL 60089 |
CSC Corptax | www.corptax.com 1-847-236-8000 |
Extensions CT-300, CT-400, CT-3-A/BC |
2023–2025 |
| Universal Tax Systems, Inc. 225 Chastain Meadows CT Suite 300 Kennesaw, GA 30144 |
TaxWise | taxna.wolterskluwer.com 1-866-345-4171 |
Extensions |
2023–2025 |
| Intuit, Inc. 5601 Headquarters Dr Plano, TX 75024 |
ProConnect Tax Online | proconnect.intuit.com/tax-online 1-888-875-6701 |
2023–2024 | |
| Intuit, Inc. 5601 Headquarters Dr Plano, TX 75024 |
Lacerte Software | accountants.intuit.com/tax/lacerte 1-888-875-6701 |
Extensions CT-300, CT-400, CT-3/3M, CT-3A, CT-3-A/BC, CT-3S, CT-13 |
2023–2025 |
| On-Line Taxes, Inc. 724 Jules Street Saint Joseph, MO 64501 |
OLTPro Desktop | www.OLTPRO.com 1-877-658-4776 |
Extensions CT-300, CT-400, CT-3/3M, CT-3A, CT-3-A/BC, CT-3S, CT-13, CT-183/183M, CT-184/184M |
2023–2025 |
| On-Line Taxes, Inc. 724 Jules Street Saint Joseph, MO 64501 |
OLTPro Web | www.OLTPRO.com 1-877-658-4776 |
Extensions CT-300, CT-400, CT-3/3M, CT-3A, CT-3-A/BC, CT-3S, CT-13, CT-183/183M, CT-184/184M |
2023–2025 |
| Tritech Software Development Corporation 1205 S. Greenville Ave Allen, TX 75002 |
Premium Pro |
www.tritechsoft.com |
Extensions CT-300, CT-400, CT-33/33M, CT-33NL |
2023–2025 |
| Tritech Software Development Corporation 1205 S. Greenville Ave Allen, TX 75002 |
Stratus Premium Pro |
www.tritechsoft.com |
Extensions CT-300, CT-400 |
2024–2025 |
|
Terrabitten Technologies, Inc. |
PremaTax |
2023–2024 |
||
| Intuit, Inc. 7535 Torrey Santa Fe Rd San Diego, CA 92122 |
TurboTax Business | 2023– 2024 |
||
| Intuit, Inc. 7535 Torrey Santa Fe Rd San Diego, CA 92122 |
TurboTax Live Assisted Business | 2024 | ||
| Intuit, Inc. 7535 Torrey Santa Fe Rd San Diego, CA 92122 |
TurboTax Live Full Service Business | 2024 | ||
| Tax Technologies, Inc. 196 Woods Avenue Bergenfield, NJ 07621 |
Tax Series |
www.taxtechnologies.com |
Extensions CT-300, CT-400 |
2023–2025 |
| Taxware Systems 195 N. Euclid Ave., Suite 201 Upland, CA 91784 |
WinScorp | www.taxwaresystems.com sales@taxwaresystems.com Sales: 1-800-877-1065 or 1-909-931-3131 |
CT-3S | 2023–2025 |
| K1X, Inc. 1 High Street Court Morristown, NJ 07960 |
990 Tracker | k1x.io | 2024 | |
| Crowe LLP 225 W Wacker Drive, Suite 2600 Chicago, IL 60606 |
C-TRAC | www.crowe.com/ctrac 1 877 492-8722 |
2023 |