Follow the steps to complete the OK Form 505 online.

1. Click ‘Get Form’ button to access the document and open it in the appropriate editor.
2. Once you have the form open, begin by entering the names shown on the joint tax return. Ensure the first spouse's name and Social Security number are entered accurately, followed by the second spouse's information.
3. Indicate whether you are an injured spouse by checking the appropriate box. This is essential for processing your claim.
4. Fill in the tax year for which the claim is being filed. This information is critical for the Oklahoma Tax Commission to match your submission to the correct tax return.
5. Provide your current home address on the form. If this address differs from the one listed on the joint return, indicate this by answering 'Yes' or 'No.'
6. In Part 2 of the form, begin allocating income figures. Enter the separate income for each spouse, including joint income, in the appropriate columns.
7. Continue with the allocation of adjustments and deductions as required in the table. Be sure to identify and enter the respective amounts for adjustments and standard deductions.
8. Allocate the number of exemptions claimed, ensuring whole numbers are entered, and allocate any credits as per the guidelines provided in the form.
9. Complete the section regarding Oklahoma income tax withheld for each spouse, including reference to relevant W-2 forms.
10. Finally, review the entire form for accuracy. Sign the form under penalties of perjury, ensuring all information is correct and complete before submission.
11. After completing the form, save your changes, and consider downloading or printing a copy for your records. The form can be shared as needed.

Start completing your OK Form 505 online today to ensure you receive your rightful tax refund.