Hello, Turbo tax is calculating 10% max tax credit on energy improvements. The limit is 30% with a maximum of $1,200. Per 2023 IRS publications 5695.

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Turbo tax is stating there is a maximum of 10% with a cap of $500. That is from 2022 and before.

Publication links:

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-credits-deductions/claim-energy-effi...

https://www.energystar.gov/about/federal_tax_credits/insulation

https://www.irs.gov/credits-deductions/energy-efficient-home-improvement-credit

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Wait for the energy credit form to be ready.

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No hurry to e-file since the IRS will not begin to accept/reject 2023 e-files until January 29.   And….a state return cannot be accepted until after the IRS accepts your federal return.