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Federal incentives
Federal Residential Clean Energy Credit (25D)
30% for systems installed 2022–2025; not available for installations completed after December 31, 2025[1]
The 30% federal credit for homeowners who bought solar ended with Public Law 119-21. A system counts in the year its installation is completed, so paying in 2025 for a 2026 installation does not qualify.
- Who
- Homeowners who bought and installed a system by December 31, 2025 claim it on IRS Form 5695 for that tax year.
- Deadline
- December 31, 2025
- Checked
- November 5, 2026
Business credit for leased and PPA systems (48E)
Claimed by the system owner, not the homeowner; solar must begin construction by July 4, 2026 or be in service by December 31, 2027[2]
If a company owns the panels on your roof (a lease or power purchase agreement), that company may claim the business clean electricity investment credit and can reflect it in your price. You cannot claim it yourself.
- Who
- Third-party-owned systems (leases and PPAs). Ask the provider whether the price assumes this credit.
- Deadline
- December 31, 2027
- Checked
- November 5, 2026
State incentives in Iowa
Solar Energy Equipment Sales Tax Exemption
Exempt from state sales and use tax (panels, inverters, solar shingles, transmission devices; not batteries or racking)[3]
Equipment primarily used to collect and convert solar radiation into energy or transmit it; no limit on purchaser type.
- Who
- Equipment primarily used to collect and convert solar radiation into energy or transmit it; no limit on purchaser type.
- Deadline
- None set in the source
- Checked
- November 5, 2026
Solar energy system property tax exclusion (five years)
Installing solar does not raise your home's assessed or taxable value for five full assessment years.[4]
Solar energy systems installed on residential, agricultural, commercial or industrial property in Iowa (Iowa Code 441.21(8)(b)).
- Who
- Solar energy systems installed on residential, agricultural, commercial or industrial property in Iowa (Iowa Code 441.21(8)(b)).
- Deadline
- None set in the source
- Checked
- November 5, 2026
How these incentives stack
Cash rebates are paid first and usually reduce the cost a tax credit is based on. State tax credits only help if you owe enough state income tax. Exemptions (sales and property tax) apply automatically or through a form, and they do not reduce what you owe the installer on paper, so check that a quote does not charge tax that the law exempts. The calculator applies the programs it can model and lets you switch utility rebates on or off.
FAQ
Frequently asked questions
Does Iowa have a solar tax credit?
No. Iowa offers exemptions and utility programs instead of a state income tax credit; see the list above.
Can I still get the federal solar tax credit?
No, not if you buy the system and installation is completed after December 31, 2025 (Federal Residential Clean Energy Credit (25D)[1]). If a company leases you the panels or sells you the power, that company may still claim a business credit and may pass some value on through the price.
sources
[ 4 ]Every number on this page links to one of these sources. Dates show when we last checked each one.
- IRS FS-2025-05: FAQs for modification of sections 25C, 25D, 25E, 30C, 30D, 45L, 45W, and 179D under Public Law 119-21 (OBBB)irs.gov · checked Nov 5, 2026
- Public Law 119-21 - Sec. 70513(a) and (g)(5) (48E); Sec. 70512(a) and (l)(4) (45Y)govinfo.gov · checked Nov 5, 2026
- Sales & Use Tax Guide | Department of Revenuerevenue.iowa.gov · checked Nov 5, 2026
- Iowa Code 2026 § 441.21(8)(b) Actual, assessed, and taxable valuelegis.iowa.gov · checked Nov 5, 2026
Incentive list last re-checked November 5, 2026. Programs change; confirm with the program before you sign.
Change log
- Monthly output per kW in Des Moines updated to [80.0, 89.9, 119.7, 126.2, 140.9, 149.7, 148.8, 135.8, 120.9, 105.1, 79.3, 70.7] kWh/kW/month (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).
- Average solar radiation on the panels in Des Moines updated to 4.75 kWh/m2/day (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).
- Solar output per kW in Iowa (PVWatts, Des Moines) updated to 1366.8 kWh/kW/yr (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).
- What the rule says updated to “Prior to the commission’s approval of a value of solar methodology and rate, the outflow purchase rate for an eligible distributed generation facility shall be the applicable retail volumetric rate” (Iowa Code 2026 § 476.49 Billing methods for distributed generation customers).