To amend the Internal Revenue Code of 1986 to increase the limitation on the State and local tax deduction for married individuals, and for other purposes.

Family Tax Deduction Improvement Act This bill amends the Internal Revenue Code to modify the limit on individual deductions for certain state and local taxes, which is currently $10,000 per year ($5,000 for a married taxpayer filing a separate return). The bill doubles the limit for married individuals and requires the limit to be adjusted for inflation after 2019.