The fastest way to claim your 179D
Tax Deduction
The fastest way to claim your 179D
Tax Deduction
Qualify, model, and certify your 179D deduction with IRS-compliant documentation, without manual spreadsheets or guesswork.
Qualify, model, and certify your 179D deduction with IRS-compliant documentation, without manual spreadsheets or guesswork.
How it works
How Onshore supports 179D Tax Deductions
1
Upload your files
Drop in PDFs, spreadsheets, or blueprints — or connect to your tools. Any format works. We handle the cleanup.
2
Our AI processes your documents
We scan building specs, lighting layouts, HVAC designs, and envelope drawings to identify what qualifies.
3
Energy modelling
We create detailed energy models that show exactly how your project meets Department of Energy standards and IRS compliance.
4
Site certification
Our engineers visit the property to verify the work matches your documentation. We collect photos, confirm specs, and ensure eligibility.
5
Allocation letter
We manage the allocation letter process from start to finish — identifying the right contact, collecting signatures, and tracking everything securely.
6
Get your audit-ready report
We package everything into a clean, IRS-compliant report — ready to file and ready to defend. If you're audited, we’re there to support you.
01
Upload your building documents
Upload plans, specifications, PDFs, spreadsheets, photos, or prior reports. No templates or reformatting required.
02
Document Processing
Our AI analyzes lighting, HVAC, and building envelope documentation to determine what qualifies under Section 179D.
03
Energy modeling
We create detailed energy models that show exactly how your project meets Department of Energy standards and IRS compliance.
04
Site certification
Our engineers visit the property to verify the work matches your documentation. We collect photos, confirm specs, and ensure eligibility.
05
Allocation letter
For government or tax-exempt buildings, we manage the full allocation process—identifying the correct authority, coordinating signatures, and maintaining records.
06
IRS-ready 179D documentation
You receive a complete, audit-ready 179D report prepared for filing. If the deduction is examined, we support the defense.
Why teams trust Onshore with 179D Tax Deductions
Why teams trust Onshore with 179D Tax Deductions
Why teams trust Onshore with 179D Tax Deductions
Handles the full process from start to finish
No manual data entry or new software to learn
Free audit support included with every project
Trusted by mid-market and enterprise finance teams
SOC 2 certified and fully US-hosted
Frequently asked questions about the 179D Tax Deduction
Frequently asked questions about the 179D Tax Deduction
From new construction to retrofits, we help you identify, document, and defend every qualifying 179D deduction.
From new construction to retrofits, we help you identify, document, and defend every qualifying 179D deduction.
View more
What is the 179D Tax Deduction?
Who can claim a 179D Tax Deduction?
What types of buildings qualify?
Does Onshore Provide Full 179D Tax Deduction services?
As a tech company, does Onshore have tax experts?
View more
What is the 179D Tax Deduction?
Who can claim a 179D Tax Deduction?
What types of buildings qualify?
Does Onshore Provide Full 179D Tax Deduction services?
As a tech company, does Onshore have tax experts?
View more
What is the 179D Tax Deduction?
Who can claim a 179D Tax Deduction?
What types of buildings qualify?
Does Onshore Provide Full 179D Tax Deduction services?
As a tech company, does Onshore have tax experts?
Ready to take a closer look at Onshore?
Find out if Onshore is a fit for your company in 15 minutes.
Walk through the process with our team
Ask questions about data, security, and compliance
See how much you could save by switching
© 2026 Onshore. All rights reserved.
Ready to take a closer look at Onshore?
Find out if Onshore is a fit for your company in 15 minutes.
Walk through the process with our team
Ask questions about data, security, and compliance
See how much you could save by switching
© 2026 Onshore. All rights reserved.
Ready to take a closer look at Onshore?
Find out if Onshore is a fit for your company in 15 minutes.
Walk through the process with our team
Ask questions about data, security, and compliance
See how much you could save by switching
© 2026 Onshore. All rights reserved.
Ready to take a closer look at Onshore?
Find out if Onshore is a fit for your company in 15 minutes.
Walk through the process with our team
Ask questions about data, security, and compliance
See how much you could save by switching
© 2026 Onshore. All rights reserved.