TurboTax is correct. Your Virginia tax amount on $4,424 is $0.
Assuming you are single, VA gives you a standard deduction of $4,500 and a personal exemption of $930, resulting in VA taxable income of -$1,086.
$4,424 - $4,500 - $930 = -$1,086
Check Form VA760CG lines 9 through 16
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Turbo Tax is not correct.
Line 9 - Adj Gross Income 20668
Line 11 - Standard Deduction 9000 (married filing jointly)
Line 12 - Exemptions 3460 (2: 65 and over)
Line 13 - Deductions 3784 (529 and LTC)
Line 14 -Subtotal 16244
Line 15 - Taxable Income 4424
Line 16 - Tax Amount TurboTax says zero.
Per VA760 instructions tax table on page 33: 103.00
There is only one tax table, regardless of filing status
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Thanks again for sharing your information. After checking into the situation further, your Virginia income tax is zero because your Virginia taxable income is below the filing threshold for the Married Filing Joint filing status. The tax calculation is correct.
To learn more, see the following information from the Virginia Tax website: Who Must File