What this line means
Your final Residential Clean Energy Credit after applying the tax liability limitation. This credit is nonrefundable — it reduces your tax but cannot generate a refund. However, any unused credit carries forward to future tax years, unlike the Part II credit. This amount goes to Schedule 3, line 5a. 1
For example, a $25,000 solar installation generates a $7,500 credit. If your tax liability is only $5,000, you use $5,000 this year and carry $2,500 forward to next year’s return. 2
Does this apply to you?
- You completed Part I of Form 5695 and have a credit amount on line 6b
- You have a federal income tax liability to offset (the credit cannot exceed your tax)
- You are carrying forward unused credit from a prior year’s clean energy installation
Easy to overlook
Unused credit carries forward indefinitely If your tax liability is less than your credit, the leftover amount does not disappear. It rolls forward to future tax years until you use it all. Filers with large solar installations and modest tax bills sometimes assume the excess credit is lost — it is not. Keep filing Form 5695 each year until the carryforward is used up. 1 IRS Form 5695 instructions — Line 14
Prior-year carryforward gets added to this year’s credit If you installed solar panels last year and had unused credit, that carryforward amount gets added to any new clean energy credit this year on line 13. Check last year’s Form 5695 to see if you have a balance to carry over. 2 IRS Publication 17 — Residential energy credits
Watch out for this
This credit is limited to your tax liability. The calculation on lines 7 through 13 determines how much of the credit you can actually use this year. If you have other nonrefundable credits (like the child tax credit or education credits), those reduce the tax available for the energy credit. The order in which credits are applied matters — credits that do not carry forward are generally applied first. 1
Do not confuse “nonrefundable” with “lost.” The Part I credit carries forward. The Part II credit (Energy Efficient Home Improvement Credit on line 30) does not carry forward. This is a critical difference between the two sections of Form 5695.
Footnotes
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IRS Form 5695 Instructions, Residential Energy Credits. https://www.irs.gov/pub/irs-pdf/i5695.pdf ↩ ↩2 ↩3
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IRS Publication 17, Your Federal Income Tax, Chapter on Residential Energy Credits. https://www.irs.gov/pub/irs-pdf/p17.pdf ↩ ↩2