It's working fine on my desktop Deluxe.
Be aware: there's a bunch of gotchas in the rules.
The income must be "qualifying" income. Typically only earned income (e.g. wages), unemployment and retirement income are qualifying income. Interest, dividends, capital gains and rental income do not count. (the latest instructions say everything is qualifying except those 4 items)
From the instructions:
“To qualify for this credit, you and your spouse must each have at least $500 of qualifying income and jointly file your return. "Qualifying income" is any amount included in Ohio adjusted gross income, other than the following:
●Interest;
●Dividends and distributions;
●Capital gains; AND
●Rents and royalties”
“Amounts deducted on the Ohio Schedule of Adjustments are not included in Ohio adjusted gross income, and thus are not "qualifying income." Examples of such amounts include business income, state and local tax refunds, Social Security and railroad retirement benefits, and certain military compensation and retirement benefits.”
Fairly new is the 100% Small business Deduction (SBD). If one of the spouses is self employed, all of his/her qualifying income for the Joint Filing Credit (JFC) is wiped out by the SBD. But, you are not required to take the full 100% SBD. So, you can consider reducing the amount of SBD you claim, so that you have at least $500 of earned income to claim the JFC.
Then, any Ohio schedule A deductions (like excess medical expenses, 529 contributions) or Federal adjustments (the most common being an IRA deduction) must be subtracted from the qualifying income. If either spouse has less than $500 net, you will not qualify for the Joint filing credit. Take a look at the allocation form that TT does, it should show these adjustments.
In the "forms mode", look at the Joint Filing Credit Allocation Worksheet.
This is where your net qualifying income is calculated. It shows on line 4. If either of you is less than $500 on line 4, you do not qualify. Then, you can look at adjusting you allocations, where allowed, to get the credit . A good example is to forgo taking some of your medical deduction (or shifting some of the medical deduction to the other spouse), because the Joint Filing Credit is a bigger tax break than the medical deduction.
