The TaxSlayer Pro desktop program supports the following Oklahoma Business forms.
| OK Form 504-C | Application for Extension of Time to File an Oklahoma Income Tax Return for Corporations, Partnerships and Fiduciaries |
| OK Form 512 | Corporation Income and Franchise Tax Return |
| OK Form 512-S | Small Business Corporation Income and Franchise Tax Return |
| OK Form 512-S Part 5 | Shareholders’ Pro Rata Share of Income |
| OK Form 512-SA | Nonresident Shareholder Agreement |
| OK Form 512-S-SUP | Supplemental Schedule for Form 512-S, Part 5 |
| OK Form 513 | Resident Fiduciary Return of Income |
| OK Form 513-NR | Nonresident Fiduciary Return of Income |
| OK Form 561-F | Capital Gain Deduction for Trusts and Estates Filing Form 513 |
| OK Form 561-NR-F | Capital Gain Deduction for Trusts and Estates Filing Form 513-NR |
| OK Form 514 | Partnership Income Tax Return |
| OK Form 514 Part 5 | Partners’ Share of Income |
| OK Form 514-PT | Partnership Composite Income Tax Supplement |
| OK Form EF | Income Tax Declaration for Electronic Filing (for Form 512, 512-S, 513, 513-NR or 514) |
| OK Form EF-V | Business Filers Income Tax Payment Voucher |
| OK Form OW-8-ESC | Corporate, Fiduciary and Partnership Estimated Tax |
| OK Form BT-190 | Annual Business Activity Tax Return |
| OK Schedule K-1 (Form 513) | Part 2: Beneficiary’s Share of Income and Deductions |
| OK Schedule K-1 (Form 513-NR) | Part 2: Beneficiary’s Share of Income and Deductions |
Additional Information: