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Outputs

The result is your input columns, unchanged and in order, followed by these.

Default columns

Column Meaning
fiitax Federal income tax liability, after credits and including capital gains rates, AMT and surtaxes. Can be negative with refundable credits.
siitax State income tax liability.
fica Payroll tax: Social Security and Medicare, employee plus employer, plus self-employment tax.
tfica The taxpayer's own share of fica.
ficar Payroll tax rate (percent).
addmed Additional Medicare tax.
agi Federal adjusted gross income.
taxable_income Federal taxable income.
taxable_unemployment Unemployment compensation included in federal AGI.
earned_income Earned income.
regular_tax Federal regular income tax, before credits and AMT.

With mtr

Column Meaning
frate Federal marginal rate, percent, with respect to the chosen income.
srate State marginal rate, percent.

With idtl=2

Descriptive names; taxsim_names=True swaps in the label in the right-hand column.

Federal

Column TAXSIM
federal_adjusted_gross_income v10
federal_taxable_unemployment_compensation v11
federal_taxable_social_security_benefits v12
federal_standard_deduction v13
federal_personal_exemptions v14
federal_exemption_phaseout v15
federal_itemized_deduction_phaseout v16
federal_itemized_deductions v17
federal_taxable_income v18
federal_income_tax_before_credits v19
federal_exemption_surtax v20
federal_general_tax_credit v21
federal_child_tax_credit v22
federal_additional_child_tax_credit v23
federal_child_and_dependent_care_credit v24
federal_earned_income_tax_credit v25
federal_alternative_minimum_taxable_income v26
federal_alternative_minimum_tax v27
federal_regular_income_tax v28
federal_payroll_tax v29
federal_social_security_taxable_earnings v42
federal_net_investment_income_tax v43
federal_additional_medicare_tax v44
federal_recovery_rebate_credit v45
federal_nonrefundable_credits credits

State

Column TAXSIM
state_household_income v30
state_rent_paid v31
state_adjusted_gross_income v32
state_exemptions v33
state_standard_deduction v34
state_itemized_deductions v35
state_taxable_income v36
state_property_tax_credit v37
state_child_and_dependent_care_credit v38
state_earned_income_tax_credit v39
state_total_credits v40
state_marginal_rate_percent v41
state_tax_before_credits staxbc

States that do not use a line report 0 for it, as TAXSIM does.