Follow the steps to fill out the NY IT-255 online.

1. Click ‘Get Form’ button to obtain the form and access it for completion.
2. Enter your name as it is displayed on your tax return, ensuring it matches your identification documents.
3. Input your Social Security number accurately in the designated field.
4. Indicate whether the solar energy system uses solar radiation for residential purposes by selecting 'Yes' if applicable. If 'No', this indicates ineligibility for the credit.
5. Complete Schedule A by listing the date the equipment was placed in service, along with qualified expenditures. Apply the 25% credit calculation for each entry, up to a maximum of $5,000.
6. Transfer the current year credit from Schedule A to the appropriate line in the main form.
7. Enter the carryover credit from your previous year's Form IT-255, if applicable.
8. Calculate the total solar energy system equipment credit by adding the current year credit and the carryover credit.
9. Fill in the tax due before applying credits and subtract any other credits used prior to this one.
10. Determine the lesser amount from your credits or remaining tax due, and complete the final steps to ascertain any carryover available for the next tax year.
11. Finally, save your changes, download, print, or share the completed form as necessary.

Ensure you complete your documents online to take full advantage of available credits.