Martin S. Albert (Social Security number 111-11-1111) is 39 years old and is married to Michele R. Albert (Social Security number 123-45-6789). The Alberts live at 512 Ferry Road, Newport News, VA 23601. They file a joint return and have two dependent children, Charlene, age 17, and Jordan, age 18. Charlenes Social Security number is 123-45-6788, and Jordans Social Security number is 123-45-6787. In 2018, Martin and Michele had the following transactions:

Martin received $120,000 in salary from Red Steel Corporation, where he is a construction engineer. Withholding for Federal income tax was $10,750. The amounts withheld for FICA taxes were as follows: $7,049 ($113,700 6.2%) for Social Security and $1,740 ($120,000 1.45%) for Medicare. Martin worked in Mexico from January 1, 2017, until February 15, 2018. His $120,000 salary for 2018 includes $18,000 he earned for January and one-half of February 2018 while working in Mexico.

Martin and Michele received $400 interest on Montgomery County (Virginia) school bonds.

Martin received $2,300 interest from a Bahamian bank account.

Michele received 50 shares of Applegate Corporation common stock as a stock dividend. The shares had a fair market value of $2,500 at the time Michele received them, and she did not have the option of receiving cash.

Martin and Michele received a $1,200 refund on their 2017 Virginia income taxes. Their itemized deductions in 2017 totaled $14,000.

Martin paid $6,600 alimony to his former wife, Rose T. Morgan (Social Security number 123-45-6786). The divorce was finalized in 2015.

Martin and Michele kept the receipts for their sales taxes paid of $1,100.

Martin and Micheles itemized deductions were as follows:

State income tax paid and withheld totaled $5,100.

Real estate taxes on their principal residence were $3,700.

Mortgage interest on their principal residence was $2,500.

Cash contributions to the church totaled $2,800.

Part 1Tax Computation

Compute the Albertss net tax payable (or refund due) for 2018.

Part 2Tax Planning

The Alberts are considering buying another house. Their house mortgage payments would increase by $500 (to $1,500) per month, which includes a $250 increase in interest and a $100 increase in property tax. The Alberts would like to know how much the mortgage payments would increase net of any change in their income tax. Write a letter to the Alberts that contains your advice.