PSLmodels/Tax-Brain Note publish details Zap REST API

Tax-Brain is an integrator model for PSL tax models


Tax-Brain makes it easy to simulate the US tax system by providing a single interface for multiple tax models. Currently, Tax-Brain interfaces with Tax-Calculator and Behavior-Response. Additional models will be added in the near future to expand Tax-Brain's capabilities. COMP is currently running Tax-Brain version 2.1.2.

User Tips

  • Toggle the CPI control to indicate whether a parameter should be adjusted for inflation.
  • DO NOT use commas as thousands separators.
  • Express rates as decimals.
  • You can specify values for years after the Start Year with the * operator. For example, if you enter 0.1, *, 0.2 in a tax rate field, the rate will be 10 percent in the Start Year, 10 percent a year after the Start Year, and 20 percent two years after the Start Year and forward.
  • You may specify a parameter change in the year before the Start Year with the < operator. For example, if you set the Start Year as 2018 and a Parameter Indexing Offset parameter to <,-0.0025 then this sets the Offset to -0.0025 in 2017.

policy


Parameter Indexing

Offsets

Default: -0.0025

Payroll Taxes

Social Security FICA

Default: 0.124
Default: 133048.08
Default: 9e+99

Medicare FICA

Default: 0.029

Additional Medicare FICA

Default: 200000.0
Default: 250000.0
Default: 125000.0
Default: 200000.0
Default: 200000.0
Default: 0.009

Social Security Taxability

Threshold For Social Security Benefit Taxability 1

Default: 25000.0
Default: 32000.0
Default: 25000.0
Default: 25000.0
Default: 25000.0

Threshold For Social Security Benefit Taxability 2

Default: 34000.0
Default: 44000.0
Default: 34000.0
Default: 34000.0
Default: 34000.0

Above The Line Deductions

Misc. Adjustment Haircuts

Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 1.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 1.0
Default: 1.0

Misc. Exclusions

Default: 0.0
Default: 255600.0
Default: 511200.0
Default: 255600.0
Default: 255600.0
Default: 511200.0

Child And Elderly Care

Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0

Personal Exemptions

Personal And Dependent Exemption Amount

Default: 0.0

Personal Exemption Phaseout Rate

Default: 0.02

Repeal for Dependents Under Age 18

Default: False

Standard Deduction

Standard Deduction Amount

Default: 12268.8
Default: 24537.6
Default: 12268.8
Default: 18403.2
Default: 24537.6

Additional Standard Deduction For Blind And Aged

Default: 1635.84
Default: 1329.12
Default: 1329.12
Default: 1635.84
Default: 1329.12

Refundable Credits

Personal Refundable Credit

Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0

Earned Income Tax Credit

Default: 530.63
Default: 3538.53
Default: 5844.04
Default: 6575.05
Default: 0.0765
Default: 0.34
Default: 0.4
Default: 0.45
Default: 0.0
Default: 0.0765
Default: 0.1598
Default: 0.2106
Default: 0.2106
Default: 8680.18
Default: 19077.98
Default: 19077.98
Default: 19077.98
Default: 5807.23
Default: 5817.46
Default: 5817.46
Default: 5817.46
Default: 25
Default: 64
Default: 3578.4
Default: 9e+99
Default: False
Default: False

New Refundable Child Tax Credit

Default: 0.0
Default: 0.0
Default: False
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: False
Default: 0.0
Default: False

Nonrefundable Credits

Personal Nonrefundable Credit

Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0

Child And Dependent Care

Default: 3000.0
Default: 15000.0
Default: 35.0

Misc. Credit Limits

Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0

Itemized Deductions

Medical Expenses

Default: 0.1
Default: 0.0
Default: 0.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

State And Local Income And Sales Taxes

Default: 0.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

State, Local, And Foreign Real Estate Taxes

Default: 0.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

State And Local Taxes And Real Estate Taxes

Default: 0.0
Default: 10224.0
Default: 10224.0
Default: 5112.0
Default: 10224.0
Default: 10224.0

Interest Paid

Default: 0.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

Charity

Default: 0.6
Default: 0.3
Default: 0.0
Default: 0.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0

Casualty

Default: 0.1
Default: 1.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

Miscellaneous

Default: 0.02
Default: 1.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

Itemized Deduction Limitation

Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 0.0
Default: 1.0

Surtax On Itemized Deduction Benefits Above An AGI Threshold

Default: 0.0
Default: 1.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: 0.0
Default: True
Default: True
Default: True
Default: True
Default: True
Default: True
Default: True

Ceiling On The Benefit Of Itemized Deductions As A Percent Of Deductible Expenses

Default: 1.0
Default: True
Default: True
Default: True
Default: True
Default: True
Default: True
Default: True

Ceiling On The Amount Of Itemized Deductions Allowed

Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: True
Default: True
Default: True
Default: True
Default: True
Default: True
Default: True

Capital Gains And Dividends

Regular - Long Term Capital Gains And Qualified Dividends

Default: 0.0
Default: 39464.64
Default: 78929.28
Default: 39464.64
Default: 52858.08
Default: 78929.28
Default: 0.15
Default: 435337.92
Default: 489729.6
Default: 244864.8
Default: 462533.76
Default: 489729.6
Default: 0.2
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 1.0

AMT - Long Term Capital Gains And Qualified Dividends

Default: 0.0
Default: 39464.64
Default: 78929.28
Default: 39464.64
Default: 52858.08
Default: 78929.28
Default: 0.15
Default: 435337.92
Default: 489729.6
Default: 244864.8
Default: 462533.76
Default: 489729.6
Default: 0.2
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 1.0

Tax All Capital Gains And Dividends The Same As Regular Taxable Income

Default: False
Default: 0.0
Default: 0.0

Personal Income

Regular: Non-AMT, Non-Pass-Through

Default: 0.1
Default: 9738.36
Default: 19476.72
Default: 9738.36
Default: 13904.64
Default: 19476.72
Default: 0.12
Default: 39566.88
Default: 79133.76
Default: 39566.88
Default: 52960.32
Default: 79133.76
Default: 0.22
Default: 84348.0
Default: 168696.0
Default: 84348.0
Default: 84348.0
Default: 168696.0
Default: 0.24
Default: 161028.0
Default: 322056.0
Default: 161028.0
Default: 161028.0
Default: 322056.0
Default: 0.32
Default: 204480.0
Default: 408960.0
Default: 204480.0
Default: 204480.0
Default: 408960.0
Default: 0.35
Default: 511200.0
Default: 613440.0
Default: 306720.0
Default: 511200.0
Default: 613440.0
Default: 0.37
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 1.0

Pass-Through

Default: 0.1
Default: 9738.36
Default: 19476.72
Default: 9738.36
Default: 13904.64
Default: 19476.72
Default: 0.12
Default: 39566.88
Default: 79133.76
Default: 39566.88
Default: 52960.32
Default: 79133.76
Default: 0.22
Default: 84348.0
Default: 168696.0
Default: 84348.0
Default: 84348.0
Default: 168696.0
Default: 0.24
Default: 161028.0
Default: 322056.0
Default: 161028.0
Default: 161028.0
Default: 322056.0
Default: 0.32
Default: 204480.0
Default: 408960.0
Default: 204480.0
Default: 204480.0
Default: 408960.0
Default: 0.35
Default: 511200.0
Default: 613440.0
Default: 306720.0
Default: 511200.0
Default: 613440.0
Default: 0.37
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 1.0
Default: 1.0
Default: 0.0
Default: disabled
Default: True
Default: 0.2
Default: 161028.0
Default: 322056.0
Default: 161028.0
Default: 161028.0
Default: 322056.0
Default: 50000.0
Default: 100000.0
Default: 50000.0
Default: 50000.0
Default: 100000.0
Default: disabled
Default: disabled
Default: disabled

Alternative Minimum Tax

Default: 71874.72
Default: 111850.56
Default: 55925.28
Default: 71874.72
Default: 111850.56
Default: 0.25
Default: 511200.0
Default: 1022400.0
Default: 511200.0
Default: 511200.0
Default: 1022400.0
Default: 0.26
Default: 195380.64
Default: 0.02

Child/Dependent Credits

Child Tax Credit

Default: 2000.0
Default: 0.0
Default: 200000.0
Default: 400000.0
Default: 200000.0
Default: 200000.0
Default: 400000.0
Default: 0.05

Additional Child Tax Credit

Default: 1400.0
Default: 0.15
Default: 0.0
Default: 2500.0
Default: 3

Other Dependent Tax Credit

Default: 500.0

Other Taxes

Net Investment Income Tax

Default: 200000.0
Default: 250000.0
Default: 125000.0
Default: 200000.0
Default: 250000.0
Default: False
Default: 0.038

Surtaxes

New Minimum Tax

Default: 0.0
Default: 1022400.0
Default: 1022400.0
Default: 511200.0
Default: 1022400.0
Default: 1022400.0
Default: 2044800.0
Default: 2044800.0
Default: 1022400.0
Default: 2044800.0
Default: 2044800.0

New AGI Surtax

Default: 0.0
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99
Default: 9e+99

Lump-Sum Tax

Default: 0.0

Universal Basic Income

UBI Benefits

Default: 0.0
Default: 0.0
Default: 0.0

UBI Taxability

Default: 0.0

Benefits

Benefit Repeal

Default: disabled
Default: disabled
Default: disabled
Default: disabled
Default: disabled
Default: disabled
Default: disabled
Default: disabled
Default: False
Default: False
Default: disabled

behavior


Assumptions

Behavior

Default: 0.0
Default: 0.0
Default: 0.0