Merge pull request #2786 from martinholmer/add-ctc_nonrefundable-vari…

…able

Add ctc_nonrefundable variable

taxcalc/calcfunctions.py

@@ -2455,7 +2455,7 @@ def ChildDepTaxCredit(age_head, age_spouse, nu18, n24, MARS, c00100, XTOT, num,
                       c07200,
                       CTC_c, CTC_ps, CTC_prt, exact, ODC_c,
                       CTC_c_under6_bonus, nu06,
-                      CTC_refundable, CTC_include17,
+                      CTC_is_refundable, CTC_include17,
                       c07220, odc, codtc_limited):
     """
     Computes amounts on "Child Tax Credit and Credit for Other Dependents
@@ -2554,7 +2554,7 @@ def ChildDepTaxCredit(age_head, age_spouse, nu18, n24, MARS, c00100, XTOT, num,
         line13 = line11 - line12
         line14 = 0.
         line15 = max(0., line13 - line14)
-        if CTC_refundable:
+        if CTC_is_refundable:
             c07220 = line10 * line1 / line3
             odc = max(0., line10 - c07220)
             codtc_limited = max(0., line10 - c07220 - odc)
@@ -2924,7 +2924,7 @@ def CharityCredit(e19800, e20100, c00100, CR_Charity_rt, CR_Charity_f,
 def NonrefundableCredits(c05800, e07240, e07260, e07300, e07400,
                          e07600, p08000, odc,
                          personal_nonrefundable_credit,
-                         CTC_refundable,
+                         CTC_is_refundable,
                          CR_RetirementSavings_hc, CR_ForeignTax_hc,
                          CR_ResidentialEnergy_hc, CR_GeneralBusiness_hc,
                          CR_MinimumTax_hc, CR_OtherCredits_hc, charity_credit,
@@ -2953,7 +2953,7 @@ def NonrefundableCredits(c05800, e07240, e07260, e07300, e07400,
         Other Dependent Credit
     personal_nonrefundable_credit: float
         Personal nonrefundable credit
-    CTC_refundable: bool
+    CTC_is_refundable: bool
         Whether the child tax credit is fully refundable
     CR_RetirementSavings_hc: float
         Credit for retirement savings haircut
@@ -3033,7 +3033,7 @@ def NonrefundableCredits(c05800, e07240, e07260, e07300, e07400,
     c07240 = min(e07240 * (1. - CR_RetirementSavings_hc), avail)
     avail = avail - c07240
     # Child tax credit
-    if not CTC_refundable:
+    if not CTC_is_refundable:
         c07220 = min(c07220, avail)
         avail = avail - c07220
         # Other dependent credit
@@ -3067,7 +3067,8 @@ def NonrefundableCredits(c05800, e07240, e07260, e07300, e07400,
 @iterate_jit(nopython=True)
 def AdditionalCTC(codtc_limited, ACTC_c, n24, earned, ACTC_Income_thd,
                   ACTC_rt, nu06, ACTC_rt_bonus_under6family, ACTC_ChildNum,
-                  CTC_refundable, CTC_include17, age_head, age_spouse, MARS, nu18,
+                  CTC_is_refundable, CTC_include17,
+                  age_head, age_spouse, MARS, nu18,
                   ptax_was, c03260, e09800, c59660, e11200,
                   c11070):
     """
@@ -3115,7 +3116,7 @@ def AdditionalCTC(codtc_limited, ACTC_c, n24, earned, ACTC_Income_thd,
     # Part I
     line3 = codtc_limited
 
-    if CTC_refundable:
+    if CTC_is_refundable:
         line4 = 0.
     else:
         if CTC_include17:
@@ -3156,7 +3157,8 @@ def AdditionalCTC(codtc_limited, ACTC_c, n24, earned, ACTC_Income_thd,
 def C1040(c05800, c07180, c07200, c07220, c07230, c07240, c07260, c07300,
           c07400, c07600, c08000, e09700, e09800, e09900, niit, othertaxes,
           c07100, c09200, odc, charity_credit,
-          personal_nonrefundable_credit, CTC_refundable, ODC_refundable):
+          personal_nonrefundable_credit,
+          CTC_is_refundable, ODC_is_refundable):
     """
     Computes total used nonrefundable credits, c07100, othertaxes, and
     income tax before refundable credits, c09200.
@@ -3217,8 +3219,9 @@ def C1040(c05800, c07180, c07200, c07220, c07230, c07240, c07260, c07300,
     """
     # total used nonrefundable credits (as computed in NonrefundableCredits)
     c07100 = (c07180 + c07200 + c07600 + c07300 + c07400 +
-              c07220 * (1. - CTC_refundable) + c08000 +
-              c07230 + c07240 + c07260 + odc * (1. - ODC_refundable) + charity_credit +
+              c07220 * (1. - CTC_is_refundable) + c08000 +
+              c07230 + c07240 + c07260 +
+              odc * (1. - ODC_is_refundable) + charity_credit +
               personal_nonrefundable_credit)
     # tax after credits (2016 Form 1040, line 56)
     tax_net_nonrefundable_credits = max(0., c05800 - c07100)
@@ -3319,8 +3322,8 @@ def CTC_new(CTC_new_c, CTC_new_rt, CTC_new_c_under6_bonus,
 @iterate_jit(nopython=True)
 def IITAX(c59660, c11070, c10960, personal_refundable_credit, ctc_new, rptc,
           c09200, payrolltax, CDCC_refund, recovery_rebate_credit,
-          eitc, c07220, odc, CTC_refundable, ODC_refundable, refund,
-          ctc_total, ctc_refundable, iitax, combined):
+          eitc, c07220, odc, CTC_is_refundable, ODC_is_refundable, refund,
+          ctc_total, ctc_refundable, ctc_nonrefundable, iitax, combined):
     """
     Computes final taxes.
 
@@ -3366,17 +3369,19 @@ def IITAX(c59660, c11070, c10960, personal_refundable_credit, ctc_new, rptc,
         Total CTC amount (c07220 + c11070 + odc + ctc_new)
     ctc_refundable: float
         Portion of total CTC amount that is refundable
+    ctc_nonrefundable: float
+        Portion of total CTC amount that is nonrefundable
     iitax: float
         Total federal individual income tax liability
     combined: float
         Sum of iitax and payrolltax and lumpsum_tax
     """
     eitc = c59660
-    if CTC_refundable:
+    if CTC_is_refundable:
         ctc_refund = c07220
     else:
         ctc_refund = 0.
-    if ODC_refundable:
+    if ODC_is_refundable:
         odc_refund = odc
     else:
         odc_refund = 0.
@@ -3385,9 +3390,11 @@ def IITAX(c59660, c11070, c10960, personal_refundable_credit, ctc_new, rptc,
               odc_refund)
     ctc_total = c07220 + c11070 + odc + ctc_new
     ctc_refundable = ctc_refund + c11070 + odc_refund + ctc_new
+    ctc_nonrefundable = max(0., ctc_total - ctc_refundable)
     iitax = c09200 - refund
     combined = iitax + payrolltax
-    return (eitc, refund, ctc_total, ctc_refundable, iitax, combined)
+    return (eitc, refund, ctc_total, ctc_refundable, ctc_nonrefundable,
+            iitax, combined)
 
 
 @JIT(nopython=True)

taxcalc/policy_current_law.json

@@ -16591,7 +16591,7 @@
             "cps": true
         }
     },
-    "CTC_refundable": {
+    "CTC_is_refundable": {
         "title": "Whether the child tax credit is fully refundable",
         "description": "If true, the child tax credit is made fully refundable.",
         "notes": "If true, the Additional Child Tax Credit is not used.",
@@ -16625,7 +16625,7 @@
             "cps": true
         }
     },
-    "ODC_refundable": {
+    "ODC_is_refundable": {
         "title": "Whether the other dependents tax credit is fully refundable",
         "description": "If true, the other dependents tax credit is made fully refundable.",
         "notes": "",

taxcalc/records_variables.json

@@ -1046,6 +1046,11 @@
       "desc": "Total CTC amount (c07220 + c11070 + odc + ctc_new)",
       "form": {"2013-20??": "calculated variable"}
     },
+    "ctc_nonrefundable": {
+      "type": "float",
+      "desc": "Portion of total CTC amount that is nonrefundable",
+      "form": {"2013-20??": "calculated variable"}
+    },
     "ctc_refundable": {
       "type": "float",
       "desc": "Portion of total CTC amount that is refundable",

taxcalc/reforms/ARPA.json

@@ -27,10 +27,10 @@
               "2021": 0},
     "UI_thd": {"2020": [150000, 150000, 150000, 150000, 150000],
                "2021": [0, 0, 0, 0, 0]},
-    "CTC_refundable": {"2021": true,
-                       "2022": false},
-    "ODC_refundable": {"2021": true,
-                       "2022": false},                   
+    "CTC_is_refundable": {"2021": true,
+                          "2022": false},
+    "ODC_is_refundable": {"2021": true,
+                          "2022": false},
     "CTC_include17": {"2021": true,
                       "2022": false},
     "CTC_new_c": {"2021": 1000,