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Energy Efficient Home Credit (45L) in Idaho 2026

Calculate your energy efficient home credit (45l) tax savings in Idaho. With Idaho's 5.8% top state tax rate, your combined savings are higher.

Idaho Tax Overview

State Income Tax
5.8%
flat
Sales Tax
6%
avg combined: 6.02%
Property Tax Rate
0.63%
Median Income
$65,988

Flat 5.8% since 2023. Uses federal taxable income. 60% Idaho capital gains exclusion. Grocery credit $120/person.

Idaho Income Tax Brackets (Single)

5.8%
$0 +
Your bracket
$5,000
Est. Total Savings
$5,000
Max Deduction
Tax Credit
Deduction Type
27.8%
Combined Tax Rate

Energy Efficient Home Credit (45L) Savings Calculator for Idaho

$
$

Federal Savings

$5,000

22% bracket

Idaho State

$0

5.8% rate

Total Savings

$5,000

27.8% combined

Tax credits reduce your tax bill dollar-for-dollar, regardless of your tax bracket.

Savings by Tax Bracket in Idaho

10%
$5,000
12%
$5,000
22%
$5,000
24%
$5,000
32%
$5,000
35%
$5,000
37%
$5,000

Includes 5.8% Idaho state tax on top of federal savings.

Eligibility Requirements

Builders or developers of new energy-efficient homes

  • 1$2,500 for ENERGY STAR certified homes
  • 2$5,000 for DOE Zero Energy Ready homes
  • 3Must meet prevailing wage requirements for full credit

Idaho residents should verify that this deduction is also recognized on their state tax return for additional savings of up to 5.8%.

Common Mistakes to Avoid

  • !Not obtaining required certifications before claiming
  • !Missing prevailing wage requirements
  • !Failing to meet the 50% energy savings threshold
  • !Forgetting to claim the deduction on your Idaho state return (missing up to 5.8% additional savings)

Idaho Filing Tips

Federal standard deduction automatically applies. Maximize the 60% capital gains exclusion on Idaho-sourced investments. Use the grocery credit. Retirement income is fully taxable.

Required Tax Forms

Form 8908Form 3800

File these forms with your federal tax return to claim the energy efficient home credit (45l). Idaho may require additional state-specific forms.

Other Tax Deductions in Idaho

Mortgage Interest Deduction

Housing

~$4,423
est. savings

Property Tax Deduction

Housing

~$2,780
est. savings

Home Office Deduction

Housing

~$1,516
est. savings

Home Energy Tax Credit

Housing

~$1,800
est. savings

Residential Solar Tax Credit

Housing

~$7,500
est. savings

Military Moving Expenses

Housing

~$5,055
est. savings

PMI Premium Deduction

Housing

~$1,390
est. savings

Mortgage Points Deduction

Housing

~$2,527
est. savings

Energy Efficient Home Credit (45L) in Neighboring States

Montana

5.9% top rate (flat)

~$2,500
-2,500 vs Idaho

Wyoming

No state income tax

~$2,500
-2,500 vs Idaho

Utah

4.65% top rate (flat)

~$2,500
-2,500 vs Idaho

Nevada

No state income tax

~$2,500
-2,500 vs Idaho

Oregon

9.9% top rate (progressive)

~$2,500
-2,500 vs Idaho

Washington

No state income tax

~$2,500
-2,500 vs Idaho

Tax Calculators for Idaho Cities

BoiseMeridianNampaIdaho FallsCaldwellPocatelloCoeur d'AleneTwin Falls

Calculate Your Full Tax Savings in Idaho

Use our free tax calculators to optimize your entire tax return for Idaho.

Income Tax CalculatorIdaho Income TaxFull Energy Efficient Home Credit (45L) Guide

Frequently Asked Questions

How much can I save with the Energy Efficient Home Credit (45L) in Idaho?

In Idaho, the energy efficient home credit (45l) can save you an estimated $5,000 per year on a $5,000 deduction. This includes $5,000 in federal tax savings and $0 in Idaho state tax savings at the 5.8% marginal rate. The national average savings is $2,500/year.

What is the Idaho state income tax rate?

Idaho has a flat income tax system with a top rate of 5.8%. Flat 5.8% since 2023. Uses federal taxable income. 60% Idaho capital gains exclusion. Grocery credit $120/person.

Who qualifies for the Energy Efficient Home Credit (45L) in Idaho?

Builders or developers of new energy-efficient homes. The eligibility requirements are the same whether you live in Idaho or another state, as this is a federal tax credit. However, your total savings will vary based on Idaho's 5.8% top state tax rate.

What tax forms do I need to claim the Energy Efficient Home Credit (45L) in Idaho?

To claim the energy efficient home credit (45l), you need to file Form 8908 and Form 3800 with your federal return. Idaho residents should also check if the state allows this deduction on their state return for additional savings of up to 5.8%. Filing status affects your deduction limits and tax bracket.

Is the Energy Efficient Home Credit (45L) better in Idaho than in states without income tax?

Yes, Idaho residents benefit more because the state's 5.8% top income tax rate means the deduction reduces both your federal AND state tax liability. In states with no income tax (like Texas, Florida, or Nevada), this deduction only reduces federal taxes. Your combined rate of 27.8% means more savings per dollar deducted.

What is the standard deduction in Idaho for 2026?

Idaho's standard deduction is $14,600 for single filers and $29,200 for married filing jointly. Federal standard deduction automatically applies. Maximize the 60% capital gains exclusion on Idaho-sourced investments. Use the grocery credit. Retirement income is fully taxable.

Related Calculators

Mortgage Interest Deduction in Idaho

Avg savings: $3,500/year

Property Tax Deduction in Idaho

Avg savings: $2,200/year

Home Office Deduction in Idaho

Avg savings: $1,200/year

Home Energy Tax Credit in Idaho

Avg savings: $1,800/year

Residential Solar Tax Credit in Idaho

Avg savings: $7,500/year

Military Moving Expenses in Idaho

Avg savings: $4,000/year