Final answer:
Helen's itemized deduction for interest for the 2022 tax year is $5,915.
Step-by-step explanation:
To calculate Helen's itemized deduction for interest for the 2022 tax year, we need to consider the limitations on mortgage interest deductions. For the mortgage interest on the Dallas residence and the Vail residence, the deduction is limited to the interest paid on up to $750,000 of acquisition debt. Since the loan balance for both properties is $50,000 each, the total deduction for these two properties would be $1,600 + $3,100 = $4,700.
For the automobile loan interest and student loan interest, the deduction may be subject to certain limitations based on Helen's income. However, assuming no limitations, the total deduction for these two items would be $440 + $775 = $1,215.
Therefore, Helen's itemized deduction for interest (after limitations, if any) for 2022 would be $4,700 + $1,215 = $5,915.