Filing HOH, my wife had no income, No one else can claim her, and she isn't filing her own taxes for 2024, but TurboTax is saying she doesn't qualify as my dependent.

[DoninGA]

A spouse can Never be a dependent.  You can file as Married Filing Jointly even if one spouse has little or no income.

[xmasbaby0]

File a joint return.   You cannot claim a spouse as a dependent.

Married Filing Jointly is usually better, even if one spouse had little or no income. When you file a joint return, you and your spouse will get the married filing jointly standard deduction of $29,200 (+ $1550 for each spouse 65 or older)  for 2024. You are eligible for more credits including education credits, earned income credit, child and dependent care credit, and a larger income limit to receive the child tax credit.