Schedule 3 (Form 1040) Filing Checklist for Tax Year 2023
Overview and 2023-Specific Changes
Schedule 3 reports nonrefundable credits in Part I and other payments, as well as refundable credits in Part II. The 2023 version reflects significant changes under the Inflation Reduction Act, including new clean vehicle credit rules, separation of residential energy credits into distinct lines, and revised reporting for qualified sick and family leave wages.
Key 2023 updates include a new credit for previously owned clean vehicles on line 6m, separate reporting lines for residential clean energy credit on line 5a and energy-efficient home improvement credit on line 5b, and elective payment election amount reporting on line 13c. Sick and family leave wage credits from specified 2020-2021 periods are consolidated on line 13z.
Clean Vehicle and Energy Credit Changes
New clean vehicle credits for 2023 include income thresholds of $150,000 for single filers, $225,000 for heads of household, and $300,000 for married filing jointly or a qualifying surviving spouse. Vehicles must meet battery capacity and manufacturing requirements and be placed in service by 2023.
Residential energy credits are divided into two lines: line 5a for the residential clean energy credit, covering solar, wind, geothermal, and fuel cell property, and line 5b for the energy-efficient home improvement credit, covering insulation, windows, doors, and qualifying heating and cooling equipment. Both credits require completion of Form 5695 with separate line entries.
Ten-Step Filing Checklist
Step 1: Verify Form Compatibility and Filing Status
Confirm Schedule 3 attaches only to Form 1040, Form 1040-SR, or Form 1040-NR. Nonresident aliens filing Form 1040-NR face credit limitations, including restricted access to the child tax credit, credit for other dependents, additional child tax credit, and premium tax credit. Verify eligibility for each credit claimed against Form 1040-NR restrictions before completing Schedule 3.
Step 2: Gather Part I Nonrefundable Credit Documentation
Collect all the forms supporting nonrefundable credits in Part I. Obtain Form 1116 for foreign tax credit if you paid income taxes to foreign countries. Gather Form 2441 for the child and dependent care expenses credit. Collect Form 8863 for education credits, including the American Opportunity Credit and Lifetime Learning Credit.
Prepare Form 8880 for the retirement savings contributions credit if you made qualifying IRA or employer plan contributions. Obtain Form 5695 for both the residential clean energy credit and the energy-efficient home improvement credit, noting the 2023 split into separate reporting lines. Gather Form 3800 for general business credit if you operate a business.
Collect Form 8801 for prior year minimum tax credit, Form 8839 for adoption credit, and Schedule R for credit for the elderly or disabled. Obtain Form 8936 for clean vehicle credits, including both new clean vehicles on line 6f and previously owned clean vehicles on new line 6m. Gather Forms 8396, 8859, 8834, 8911, and 8912 for the mortgage interest credit, the District of Columbia first-time homebuyer credit, the qualified electric vehicle credit, the alternative fuel refueling property credit, and the credit to holders of tax credit bonds, respectively.
Step 3: Verify Clean Vehicle Credit Eligibility
For line 6f, which is the new clean vehicle credit, and line 6m, which is the previously owned clean vehicle credit, verify that your modified adjusted gross income does not exceed the applicable thresholds. Thresholds are $150,000 for single or married filing separately, $225,000 for head of household, and $300,000 for married filing jointly or qualifying surviving spouse.
Confirm the vehicle was placed in service during 2023. Verify that battery capacity requirements are met, and that the care satisfies manufacturing and assembly requirements under the Inflation Reduction Act provisions. Obtain and retain the dealer's time-of-sale report, which documents the vehicle purchase and credit eligibility. Complete and attach Form 8936.
Step 4: Complete Residential Energy Credit Forms
Prepare Form 5695 to calculate both the residential clean energy credit and the energy-efficient home improvement credit. Line 5a reports the residential clean energy credit from Form 5695 line 15, covering solar electric property, solar water heating property, wind energy property, geothermal heat pump property, and fuel cell property.
Line 5b reports the energy-efficient home improvement credit from Form 5695, line 32, covering qualified energy efficiency improvements, including insulation, exterior windows and doors, and certain roofs, as well as residential energy property expenses for central air conditioners, natural gas water heaters, and biomass stoves. Verify that all property was placed in service during 2023 and installed at your existing home. The energy-efficient home improvement credit does not apply to new construction. Attach completed Form 5695.
Step 5: Calculate Part I Nonrefundable Credits Total
Enter foreign tax credit from Form 1116 on line 1. Enter the child and dependent care expenses credit from Form 2441 line 11 on line 2. Enter education credits from Form 8863 line 19 on line 3. Enter the retirement savings contributions credit from Form 8880 on line 4. Enter the residential clean energy credit from Form 5695, line 15, on line 5a. Enter the energy-efficient home improvement credit from Form 5695, line 32, on line 5b.
Complete lines 6a through 6z for other nonrefundable credits. Enter the general business credit on line 6a of Form 3800. Enter the prior year minimum tax credit from Form 8801 on line 6b. Enter the adoption credit from Form 8839 on line 6c. Enter credit for the elderly or disabled from Schedule R on line 6d. Enter the qualified plug-in motor vehicle credit on line 6f. Enter mortgage interest credit from Form 8396 on line 6g. Enter the District of Columbia first-time homebuyer credit from Form 8859 on line 6h. Enter the qualified electric vehicle credit from Form 8834 on line 6i. Enter alternative fuel vehicle refueling property credit from Form 8911 on line 6j. Enter credit to holders of tax credit bonds from Form 8912 on line 6k. Enter credit for previously owned clean vehicles from Form 8936 on new line 6m. Enter other nonrefundable credits on line 6z with proper identification.
Add lines 1, 2, 3, 4, 5a, 5b, and 7 and enter the total on line 8. Transfer line 8 total to Form 1040, Form 1040-SR, or Form 1040-NR line 20. Nonrefundable credits reduce tax liability only to zero and cannot generate refunds. Excess credits are either lost or carried forward according to credit-specific rules.
Step 6: Gather Part II Refundable Credit Documentation
Collect Form 8962 for the net premium tax credit if you or family members had Marketplace health insurance coverage in 2023. If you made advance premium tax credit payments to your insurer, you must obtain Form 8962. Obtain Form 1095-A from the Marketplace, which shows your monthly enrollment and advance payment amounts.
Gather proof of extension payments made with Form 4868 if you requested an automatic extension to file. Identify excess Social Security and Tier 1 Railroad Retirement Tax Act withholding from multiple employers using Forms W-2. Collect Form 4136 for credit for federal tax on fuels if you used fuel for nontaxable purposes. Obtain Form 2439 for undistributed long-term capital gains from regulated investment companies or real estate investment trusts.
Gather documentation for the IRC Section 1341 repayment credit if you repaid amounts included in your earlier-year income. Collect evidence of the elective payment election amount from Form 3800 for new line 13c. Obtain qualified sick and family leave wage credit documentation for line 13z if applicable for leave taken before April 1, 2021, or between April 1 and September 30, 2021.
Step 7: Reconcile Premium Tax Credit
Suppose you are claiming net premium tax credit on line 9, complete Form 8962 to reconcile advance premium tax credit payments with your actual 2023 premium tax credit based on final income. Compare the advance payments shown on Form 1095-A with your calculated allowable credit.
If advance payments exceed your allowable credit, you must repay the excess as per the Form 8962 instructions and Schedule 2. If your allowable credit exceeds the advance payments received, claim the difference on Schedule 3, line 9. Attach Form 8962 to your return.
Step 8: Calculate Part II Other Payments and Refundable Credits
Enter net premium tax credit from Form 8962 on line 9. Enter the amount paid with the extension request from Form 4868 on line 10. Enter excess Social Security and tier 1 RRTA tax withheld on line 11 if you had multiple employers and the combined withholding exceeded the annual limits. Single-employer over-withholding must be claimed using Form 843, not Schedule 3.
Enter credit for federal tax on fuels from Form 4136 on line 12. Complete line 13a for undistributed long-term capital gains from Form 2439. Enter the elective payment election amount from Form 3800, Part III, line 6, column i, on new line 13c. Enter IRC section 1341 repayment credit on line 13d if applicable. Enter qualified sick and family leave wage credits on line 13z for wages paid in 2023 for leave taken before April 1, 2021, or between April 1 and September 30, 2021—report other refundable credits on line 13z with proper identification.
Add lines 9, 10, 11, 12, and 14 and enter the total on line 15. Transfer line 15 total to Form 1040, Form 1040-SR, or Form 1040-NR line 31. Refundable credits can result in refunds even if tax liability is zero.
Step 9: Attach All Required Supporting Forms
Verify attachment of all forms referenced in Schedule 3 instructions for claimed credits. Attach Form 1116 for foreign tax credit, Form 2441 for child and dependent care, Form 8863 for education credits, Form 8880 for retirement savings credit, Form 5695 for energy credits, Form 3800 for general business credit, Form 8801 for prior year minimum tax, Form 8839 for adoption credit, Schedule R for elderly or disabled credit, Form 8936 for vehicle credits, Form 8396 for mortgage interest credit, Form 8859 for DC homebuyer credit, Form 8834 for electric vehicle credit, Form 8911 for alternative fuel property credit, Form 8912 for tax credit bonds, Form 8962 for premium tax credit, and Form 4136 for fuel tax credit.
Attach Schedule 3 to Form 1040, Form 1040-SR, or Form 1040-NR with secure binding. Arrange the forms in the proper attachment sequence.
Step 10: Sign, Verify, and File
Sign and date Form 1040, Form 1040-SR, or Form 1040-NR. Both spouses must sign joint returns. Schedule 3 does not require a separate signature, but must be completed with no blank required fields. Verify that all line entries match the corresponding attached forms and schedules, and review calculations for accuracy before filing.
Consult the IRS Where to File page for Form 1040 to determine the correct mailing address based on your state of residence and whether you are enclosing payment. File by the April deadline or request an extension using Form 4868.
Important Restrictions
Nonresident aliens face credit limitations. Child tax credit, credit for other dependents, additional child tax credit, and premium tax credit are available in full only to residents of Canada and Mexico, with limited availability for residents of India and South Korea under tax treaty provisions.
General business credit on line 6a must be segregated between business and investment use and personal use. The business portion is reported on Form 3800: General Business Credit. Schedule 3 cannot be filed separately and must be attached to the corresponding Form 1040, Form 1040-SR, or Form 1040-NR as an integral part of your complete return.
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This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance.
