Your solar tax credit isn't affected by your tax withholdings, so your form W-4 has nothing to do with your solar tax credit.
The solar tax credit is a non-refundable credit, but it can be carried forward to be used in future years. Your ability to use the solar credit in any given year depends on your tax liability, which depends on your taxable income and any eventual tax credits (such as the Child Tax Credit or the Earned Income tax credit).
You can only have 0 withholding if you mark as Exempt on your form W-4. You can only do this if you had no tax liability in the preceding year, and expect no have no tax liability in the current year. If this is the case (that is you have no tax liability), then you won't benefit from the solar tax credit.
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Don't change your withholding. It's not whether you get a refund or a tax due. And the withholding and estimated payments doesn't matter. It's if you have a tax liability on your income. Look at your 1040 line 22 for total tax. So as long as Line 22 is more than the credit, you'll get the whole credit.
The credit only reduces the tax liability on 1040 line 22 to zero. Then you will get back all your withholding and any refundable credits. But it doesn't reduce any other taxes on line 23 like self employment tax or a 10% early withdrawal penalty on IRAs.
As the posters above indicate, changing your withholding has nothing to do with whether you'll get the credit, or how much. See if this makes sense:
Whatever you withhold won’t affect the tax, which, for tax year 2023, was on line 16 of Form 1040.
Your solar energy credit will be reported on line 20 of Form 1040, via Form 5695 and Schedule 3. Any energy credit you claim on line 20 will reduce your tax from line 16.
Withholding is on line 25 of Form 1040, and any increase your make to withholding doesn't affect the amount of tax on line 16. It'll increase your refund, yes, but has no effect on the actual line 16 amount. So an increase to your withholding won't change the amount of the credit you can claim.
I guess I am little concern since the finance companies give 18 months to payback the credit or else your payment will increase, I was trying to figure out if adjusting the tax withholdings will make so i get the tax credit faster in fewer years
this is something they a lot of solar companies do not explain
one last question
Will i have to submit a 5695 for every year until the I get the credit back