Thanks for this clear explanation. I purchased a solar system last summer and will get a credit of around $6K. Can you tell me how this will be applied—I think it will relate to my final 2019 tax liability, i.e. what I owe for Fed. tax after all payments/deductions, etc. are calculated, but I likely will not owe much in additional taxes on my return. Will the solar tax credit "cover" whatever remaining tax I owe, and then the remainder would carry over to next year? If so, since I will have quite a lot of remaining credit, is it safe to assume I could adjust my Fed. withholding this year (take out less each pay period), and then would owe more Fed taxes for 2020, which the rolled-over credit would apply to? Trying to find a way to actually "use" the credit, as I mistakenly thought that I'd get a big wad of cash from the gov't when I filed my taxes! (Did not think through what a tax "credit" is as opposed a tax refund.)
