Items 1 and 2: contacts
Name, address and telephone number of the GSA Project Manager and of the contractor's authorized representative.
GSA777B
Energy Efficient Commercial Buildings Tax Deduction Allocation - Appendix B
- Agency
- GSA
- Revision
- Rev. 7/2026
- Fillable fields
- 14
- Pages
- 1
- Official source
- GSA form page
- Checked
- October 20, 2026
GSA Form 777B: Energy Efficient Commercial Buildings Tax Deduction Allocation, Appendix B
GSA Form 777B, Energy Efficient Commercial Buildings Tax Deduction Allocation, is Appendix B. The footer reads GENERAL SERVICES ADMINISTRATION and GSA 777B 7/2026, and GSA hosts it in its forms library. Its heading says to submit it with the third-party certification required by the Internal Revenue Service (IRS).
The one-page form has six items: the name, address and telephone number of the GSA Project Manager; the same details for an authorized representative of the contractor receiving the allocation; the address of the building on or in which the energy-efficient property is installed; the cost of that property; the date it was placed in service; and the dollar amount of the Energy-Efficient Commercial Buildings Tax Deduction (CBTD) allocated to the contractor. Two authorized representatives sign under penalties of perjury.
The form says to send it, with the IRS third-party certification, to GSA at [email protected], and that GSA will only execute the allocation if the contractor has an executed Energy Efficient Commercial Buildings Tax Deduction Letter of Intent, including Appendix A of that document. You can fill it out free in your browser on this page and download the result without an account.
What's on GSA Form 777B
Item 3: building address
The address of the building on or in which the energy-efficient property is installed.
Items 4 and 5: property cost and date
The cost of the energy-efficient property and the date it was placed in service.
Item 6: amount allocated
The dollar amount of the Energy-Efficient Commercial Buildings Tax Deduction (CBTD) allocated to the contractor.
Signatures
A declaration that the signer has examined the allocation and that the facts are true, correct and complete, then two signature blocks.
Submission note
Where to send the form and the Letter of Intent condition for GSA to execute the allocation.
How to complete GSA Form 777B
- 1
Enter the two contacts
Fill in items 1 and 2 with the GSA Project Manager and the contractor's authorized representative.
- 2
Describe the building and property
Enter the building address, the cost of the energy-efficient property and the date it was placed in service in items 3 to 5.
- 3
Enter the allocated amount
Item 6 takes the dollar amount of the CBTD allocated to the contractor.
- 4
Sign the declaration
Each authorized representative signs under penalties of perjury and adds the date, name and title.
- 5
Attach the IRS certification
The heading says to submit the form with the third-party certification required by the IRS.
- 6
Email it to GSA
The form says to submit it, with the IRS third-party certification, to GSA at [email protected].
Why fill Form GSA777B on indox
You get the real form, filled in a browser tab, with nothing standing between you and the finished PDF.
- Fill the form right in your browser, no software to install
- Free to fill and free to download, with no account
- The official blank straight from the GSA, not a copy someone retyped
- Works on a phone, tablet or computer
Where it goes and what the form says
Where it goes
To GSA at [email protected], along with the third-party certification required by the IRS.
Condition for execution
The form says GSA will only execute this allocation if the contractor has an executed Energy Efficient Commercial Buildings Tax Deduction Letter of Intent, including Appendix A of that document.
Declaration
The signers declare under penalties of perjury that they have examined the allocation and that, to the best of their knowledge and belief, the facts are true, correct and complete.
Edition and authority
The footer reads GENERAL SERVICES ADMINISTRATION and GSA 777B 7/2026. GSA's page gives a current revision date of 07/2026 and lists no authority or regulation.
Instructions
The PDF prints no instructions beyond the submission note, and no OMB number or privacy statement.
Related forms
Who fills out GSA Form 777B?
The form names these parties. It does not say which representative signs which block.
Official sources and the blank
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Questions about Form GSA777B
Who issues GSA Form 777B?
The footer reads GENERAL SERVICES ADMINISTRATION and GSA 777B 7/2026. GSA hosts it in its forms library.
Where is GSA Form 777B sent?
The form says to submit it, along with the third-party certification required by the IRS, to GSA at [email protected].
What has to be in place before GSA executes the allocation?
The form says GSA will only execute this allocation if the contractor has an executed Energy Efficient Commercial Buildings Tax Deduction Letter of Intent, including Appendix A of that document.
What does CBTD mean on the form?
Item 6 writes Energy-Efficient Commercial Buildings Tax Deduction (CBTD) and asks for the dollar amount of it allocated to the contractor.
Who signs GSA Form 777B?
Two authorized representatives, under penalties of perjury. Each block takes a signature, date, name and title. The form does not say which party signs which block.
Does the form explain the tax deduction?
No. It prints no instructions beyond the submission note, and no OMB number or privacy statement.