Using this App you should be able to estimate your Federal tax returns for current year based on standard deduction for following categories:
1. Married filing Jointly
2. Single Filing
Married Filing Jointly can enter dependent(s) other than spouse and including children and children under 17 years older can be entered for child tax credit.
Note: This app provides just rough estimate about your tax return based on standard deduction, there is no guarantee that your actual return matches to this estimate.