TaxmanHog
Member
There is no carry forward or backward of the unused credit of $1500, use it or lose it.However, if one has a tax liability of $6,000 (that is, less than $7,500) and paid $5,000 toward that liability, via wage deductions, then at filing time there would be a balance owed of $1,000. In this scenario, since the tax liability is less than $7,500, only the amount up to the tax liability can be allowed. The EV credit would completely reduce the $6,000 liability, making it $0. The remaining $1,500 of the EV credit is not allowed. Since $5,000 was already paid via wage deductions, there would be a refund due of $5,000.
All your other scenarios are accurate, but I like to reiterate for any one who is self employed that Self Employment taxes are outside the calculation.