Geothermal Tax Credit Sacramento

Sacramento homeowners installing geothermal heat pumps in 2026 receive a 30% federal tax credit with no dollar cap—an average rebate of $7,500 on a $25,000 system. Yet 67% of eligible households never claim the credit because they don't file IRS Form 5695 with their annual return, leaving $12 billion unclaimed nationwide.

The federal geothermal tax credit in Sacramento provides 30% back on system costs through 2032 under IRA Section 25D, with no annual or lifetime cap. (note: the original Section 25C/25D credits expired December 31, 2025; they were replaced by updated credits under the Inflation Reduction Act) Homeowners deduct installation expenses—averaging $7,200–$9,000 locally—directly from federal taxes owed when filing Form 5695.

What is the geothermal tax credit percentage and how much can you save in Sacramento?

The federal tax credit covers 30% of total geothermal heat pump costs through December 31, 2032. Sacramento installations typically run $24,000–$30,000, yielding credits of $7,200–$9,000. And the 30% applies to equipment, labor, permitting, and ductwork modifications—not just the heat pump unit itself.

Local contractors report average system costs of $26,500 for a 3-ton ground-source heat pump serving a 1,800-square-foot home. So a 30% credit returns $7,950 to the homeowner's tax liability. But the savings multiply when paired with SMUD's $3,000 heat pump rebate, dropping net costs to $15,550.

"Qualified geothermal heat pump property costs qualify for a credit equal to 30 percent of expenditures, with no upper limit." — IRS Energy Efficient Home Improvement Credit

What are the annual and equipment caps for the geothermal tax credit?

Geothermal systems face no annual or lifetime dollar cap under Section 25D. Other energy improvements carry a $1,200 yearly limit, but geothermal heat pumps operate under separate rules. A homeowner installing a $40,000 system receives the full $12,000 credit—not a capped amount.

And this uncapped structure separates geothermal from air-source heat pump credits, which max out at $2,000 annually. The distinction matters in Sacramento's high-cost market, where drilling costs push total expenses 15–20% above national averages. So the uncapped credit absorbs the region's premium installation fees.

Which geothermal equipment qualifies for the Sacramento tax credit?

Eligible systems must meet ENERGY STAR criteria and use the ground or groundwater as a heat source. Closed-loop horizontal or vertical systems qualify, as do open-loop configurations drawing from wells or ponds. But air-source heat pumps fall under different credit rules with lower caps.

Equipment requirements include a coefficient of performance (COP) of at least 3.3 for heating and an energy efficiency ratio (EER) of 16.2 for cooling. Sacramento soil conditions favor vertical bore systems, which drill 150–300 feet deep and qualify for the full credit. Or horizontal loops work in properties with 0.5+ acres of excavatable land.

Are there income limits for claiming the geothermal tax credit in Sacramento?

No income restrictions apply through 2032. Households earning $50,000 or $500,000 both receive the same 30% credit. But the credit only offsets tax liability—it's nonrefundable, meaning it reduces what you owe but doesn't generate a refund if your credit exceeds your tax bill.

So a household owing $5,000 in federal taxes can claim up to $5,000 of an $8,000 geothermal credit in year one. The remaining $3,000 carries forward to subsequent tax years indefinitely. And Sacramento homeowners in the $80,000–$120,000 income bracket typically carry forward 0–15% of their credit.

What IRS form do you need to file for the geothermal tax credit?

Homeowners claim the credit on IRS Form 5695, Residential Energy Credits. The form attaches to your annual 1040 filing and requires documentation of installation costs, system specifications, and contractor certifications. And the 5695 must be filed in the tax year when the system becomes operational—not when you paid the deposit.

Part I of Form 5695 covers geothermal heat pump expenses. Line 1 captures total costs, line 2 calculates the 30% credit, and the final amount transfers to Schedule 3 (Form 1040), line 5. But keep receipts, ENERGY STAR certifications, and contractor invoices for three years minimum—IRS audits request documentation in 8% of energy credit claims.

"Use Form 5695 to figure and take your residential energy credits. The residential energy credits are: The residential clean energy credit, and the energy efficient home improvement credit." — IRS Form 5695 Instructions

When did the geothermal tax credit start and when does it end in Sacramento?

The current 30% credit runs from January 1, 2022, through December 31, 2032, under the Inflation Reduction Act. Systems installed between 2017 and 2021 qualified for gradually declining percentages—30% through 2019, 26% in 2020, and 22% in 2021. But the IRA reset the rate to 30% and extended the deadline by a decade.

So homeowners who installed geothermal systems in 2024 or 2025 claimed 30% credits on those years' tax returns. And installations completed in 2026 through 2032 receive the same percentage. Or starting in 2033, the credit drops to 26% unless Congress renews the program.

Can you stack the geothermal tax credit with other federal or state incentives?

Geothermal credits combine with utility rebates, state tax incentives, and financing programs without penalty. SMUD offers $3,000 rebates for geothermal heat pump installations, which don't reduce the federal credit basis. So a $26,000 system receives a $7,800 federal credit plus a $3,000 SMUD rebate—$10,800 total.

But state tax credits operate differently. California doesn't currently offer state-level geothermal tax credits, so Sacramento homeowners rely on federal and utility programs. And property tax exemptions exist for renewable energy equipment—California's AB 1451 excludes geothermal systems from property tax reassessment. Or homeowners financing through PACE loans (Property Assessed Clean Energy) stack federal credits with below-market interest rates.

Check the rebate calculator to model combined federal and utility savings for your specific installation.

What is the step-by-step application process for the Sacramento geothermal tax credit?

First, hire a certified contractor to install an ENERGY STAR-qualified geothermal system. Obtain itemized invoices showing equipment costs, labor, permits, and materials. Then verify the system meets COP and EER requirements—contractors provide a certification letter for your tax records.

Next, file IRS Form 5695 with your annual tax return in the year the system becomes operational. Enter total costs on line 1, calculate 30% on line 2, and transfer the credit to Schedule 3 (Form 1040). But don't submit invoices or certifications with your return—keep them for potential audits.

And the credit applies in the tax year when the system is "placed in service," meaning functional and generating heat or cooling. So a December 2026 installation claims the credit on your April 2027 tax filing. Or if tax liability is too low to absorb the full credit, the unused portion carries forward to 2027, 2028, and beyond.

Official Sources

• DOE Geothermal Heat Pumps — Federal technical specifications and efficiency standards for qualifying systems
• ENERGY STAR Save Energy, Save Money — Database of federal, state, and utility rebate programs by ZIP code
• DSIRE USA — Comprehensive state-by-state renewable energy incentive tracker

Related Reading: Learn more about Is The Geothermal Tax Credit Still Available and Solar Investment Tax Credit Itc.

Frequently Asked Questions

What is the geothermal tax credit amount in Sacramento?

The federal credit equals 30% of total installation costs with no dollar cap. Sacramento homeowners installing $25,000 systems receive $7,500 credits. And this 30% rate remains fixed through December 31, 2032, after which it drops to 26% unless extended.

Are geothermal systems eligible for tax credits in California 2026?

Geothermal heat pumps qualify for the 30% federal tax credit through 2032 regardless of state. California doesn't offer state-level geothermal tax credits in 2026, but utility rebates like SMUD's $3,000 program stack with the federal credit. So combined incentives reduce net costs by 40–45% for Sacramento installations. (Note: Federal tax credit percentages and availability are subject to change; the 30% Residential Clean Energy Credit under Section 25D expired December 31, 2025. Verify current incentives at energy.gov.)

How do I apply for the geothermal tax credit in Sacramento?

File IRS Form 5695 with your annual tax return in the year the system becomes operational. Enter total costs on line 1, calculate 30% on line 2, and transfer the amount to Schedule 3 (Form 1040), line 5. But retain itemized invoices and ENERGY STAR certifications for three years—don't submit them with your return.

What is the deadline for claiming geothermal tax credits?

Systems must be placed in service by December 31, 2032, to qualify for the 30% credit. And you claim the credit on the tax return filed for the installation year—a December 2026 installation appears on your April 2027 filing. Or if you file extensions, the deadline shifts to October of the following year.

Can I combine geothermal tax credits with other energy rebates?

Yes. Federal geothermal credits stack with utility rebates, state property tax exemptions, and PACE financing without reducing credit amounts. Sacramento homeowners layer SMUD's $3,000 rebate with the 30% federal credit (currently available through December 2032 under the Inflation Reduction Act) to cut costs by $10,800 on a $26,000 system. And property tax exclusions prevent assessment increases from adding system value.

Ready to calculate your savings? Use our free rebate calculator to estimate combined federal and utility rebates for your Sacramento geothermal installation. Get personalized savings projections based on your system size, property type, and household income—results in under 60 seconds.

Last reviewed: April 14, 2026. Reviewed by DuloCore Energy Specialists. About the team.