diff --git a/taxcalc/calculate.py b/taxcalc/calculate.py
index d97b07050..e28a31547 100644
--- a/taxcalc/calculate.py
+++ b/taxcalc/calculate.py
@@ -47,7 +47,11 @@ def __init__(self, params=None, records=None, sync_years=True, **kwargs):
             if self._records.current_year == 2009:
                 self.records.extrapolate_2009_puf()
 
+            inflation = self.params.default_inflation_rates()
             while self._records.current_year < self._params.current_year:
+                self._records.factor_target(self.params._factor_target,
+                                            inflation,
+                                            self.records.current_year + 1)
                 self._records.increment_year()
 
             print("Your data have been extrapolated to " +
@@ -131,6 +135,11 @@ def calc_all_test(self):
         return totaldf
 
     def increment_year(self):
+        self.records.factor_adjustment(self.params.factor_adjustment,
+                                       self.records.current_year + 1)
+        self.records.factor_target(self.params._factor_target,
+                                   self.params.default_inflation_rates(),
+                                   self.records.current_year + 1)
         self.records.increment_year()
         self.params.set_year(self.params.current_year + 1)
 
diff --git a/taxcalc/params.json b/taxcalc/params.json
index fa2dd178b..e5c28cb54 100644
--- a/taxcalc/params.json
+++ b/taxcalc/params.json
@@ -1265,5 +1265,29 @@
         "value": [  [400000, 450000, 225000, 425000, 450000, 225000],
                     [406750, 457600, 228800, 432200, 457600, 228800],
                     [413200, 464850, 223425, 439000, 464850, 223425]]
+    },
+        "_factor_adjustment":{
+        "long_name": "",
+	"description": "",
+	"irs_ref": "",
+        "start_year": 2013,
+        "col_var": "",
+        "row_var": "",
+        "row_label": ["2013"],
+        "cpi_inflated": false,
+        "col_label": "",
+        "value": [[0.0]] 
+    },
+        "_factor_target":{
+        "long_name": "",
+	"description": "",
+	"irs_ref": "",
+        "start_year": 2013,
+        "col_var": "",
+        "row_var": "",
+        "row_label": ["2013"],
+        "cpi_inflated": false,
+        "col_label": "",
+        "value": [[0.0]] 
     }
 }
diff --git a/taxcalc/records.py b/taxcalc/records.py
index afefbb22b..a6c8b32f9 100644
--- a/taxcalc/records.py
+++ b/taxcalc/records.py
@@ -296,6 +296,52 @@ def __init__(self,
     def current_year(self):
         return self._current_year
 
+    def factor_adjustment(self, percentage, year):
+        self.BF.AGDPN[year] += percentage * abs(self.BF.AGDPN[year] - 1)
+        self.BF.ATXPY[year] += percentage * abs(self.BF.ATXPY[year] - 1)
+        self.BF.AWAGE[year] += percentage * abs(self.BF.AWAGE[year] - 1)
+        self.BF.ASCHCI[year] += percentage * abs(self.BF.ASCHCI[year] - 1)
+        self.BF.ASCHCL[year] += percentage * abs(self.BF.ASCHCL[year] - 1)
+        self.BF.ASCHF[year] += percentage * abs(self.BF.ASCHF[year] - 1)
+        self.BF.AINTS[year] += percentage * abs(self.BF.AINTS[year] - 1)
+        self.BF.ADIVS[year] += percentage * abs(self.BF.ADIVS[year] - 1)
+        self.BF.ACGNS[year] += percentage * abs(self.BF.ACGNS[year] - 1)
+        self.BF.ASCHEI[year] += percentage * abs(self.BF.ASCHEI[year] - 1)
+        self.BF.ASCHEL[year] += percentage * abs(self.BF.ASCHEL[year] - 1)
+        self.BF.ABOOK[year] += percentage * abs(self.BF.ABOOK[year] - 1)
+        self.BF.ACPIU[year] += percentage * abs(self.BF.ACPIU[year] - 1)
+        self.BF.ACPIM[year] += percentage * abs(self.BF.ACPIM[year] - 1)
+        self.BF.ASOCSEC[year] += percentage * abs(self.BF.ASOCSEC[year] - 1)
+        self.BF.AUCOMP[year] += percentage * abs(self.BF.AUCOMP[year] - 1)
+        self.BF.AIPD[year] += percentage * abs(self.BF.AIPD[year] - 1)
+
+    def factor_target(self, target, inflation, year):
+        # 2013 is the start year of all parameter arrays. Hard coded for now.
+        # Need to be fixed later
+        if year >= 2013 and target[year - 2013] != 0:
+            # user inputs theoretically should be based on GDP
+            g = abs(self.BF.AGDPN[year] - 1)
+            ratio = (target[year - 2013] + inflation[year]) / g
+
+            # apply this ratio to all the dollar amount factors
+            self.BF.AGDPN[year] = ratio * abs(self.BF.AGDPN[year] - 1) + 1
+            self.BF.ATXPY[year] = ratio * abs(self.BF.ATXPY[year] - 1) + 1
+            self.BF.AWAGE[year] = ratio * abs(self.BF.AWAGE[year] - 1) + 1
+            self.BF.ASCHCI[year] = ratio * abs(self.BF.ASCHCI[year] - 1) + 1
+            self.BF.ASCHCL[year] = ratio * abs(self.BF.ASCHCL[year] - 1) + 1
+            self.BF.ASCHF[year] = ratio * abs(self.BF.ASCHF[year] - 1) + 1
+            self.BF.AINTS[year] = ratio * abs(self.BF.AINTS[year] - 1) + 1
+            self.BF.ADIVS[year] = ratio * abs(self.BF.ADIVS[year] - 1) + 1
+            self.BF.ACGNS[year] = ratio * abs(self.BF.ACGNS[year] - 1) + 1
+            self.BF.ASCHEI[year] = ratio * abs(self.BF.ASCHEI[year] - 1) + 1
+            self.BF.ASCHEL[year] = ratio * abs(self.BF.ASCHEL[year] - 1) + 1
+            self.BF.ABOOK[year] = ratio * abs(self.BF.ABOOK[year] - 1) + 1
+            self.BF.ACPIU[year] = ratio * abs(self.BF.ACPIU[year] - 1) + 1
+            self.BF.ACPIM[year] = ratio * abs(self.BF.ACPIM[year] - 1) + 1
+            self.BF.ASOCSEC[year] = ratio * abs(self.BF.ASOCSEC[year] - 1) + 1
+            self.BF.AUCOMP[year] = ratio * abs(self.BF.AUCOMP[year] - 1) + 1
+            self.BF.AIPD[year] = ratio * abs(self.BF.AIPD[year] - 1) + 1
+
     def increment_year(self):
         self._current_year += 1
         self.FLPDYR += 1