Updated.

[retire.git] / tax_brackets.py

diff --git a/tax_brackets.py b/tax_brackets.py
deleted file mode 100644 (file)
index b2bd4a7..0000000
--- a/tax_brackets.py
+++ /dev/null
@@ -1,76 +0,0 @@
-import copy
-import utils
-from money import money
-
-class tax_brackets:
-    """A class to represent tax brackets and some operations on them."""
-
-    def __init__(self, brackets):
-        self.brackets = copy.deepcopy(brackets)
-
-    def compute_taxes_for_income(self, income):
-        """Compute the tax bill for income given our brackets."""
-        taxes_due = money(0)
-        while income > 1:
-            (threshold, rate) = self.get_bracket_for_income(income)
-            taxes_due += (income - threshold) * rate
-            income = threshold
-        assert taxes_due >= 0, "Somehow computed negative tax bill?!"
-        return taxes_due
-
-    def get_bracket_for_income(self, income):
-        """Return the bracket that the last dollar of income was in."""
-        assert income > 0, "Income should be >0 to be taxed"
-        rate = 0.0
-        threshold = 0
-        for bracket in self.brackets:
-            # Bracket is a tuple of (monetary_threshold,
-            # tax_rate).  So bracket[0] is a dollar amount and
-            # bracket[1] is a tax rate.  e.g. ( 250000, 0.20 )
-            # indicates that every dollar you earn over 250K is
-            # taxed at 20%.
-            if (income > bracket[0] and rate < bracket[1]):
-                threshold = bracket[0]
-                rate = bracket[1]
-        return (threshold, rate)
-
-    def get_bracket_above_income(self, income):
-        """Return the next bracket above the one activated by income."""
-        assert income > 0, "Income should be >0 to be taxed"
-        rate = 1.0
-        threshold = None
-
-        # Walk the income tax brackets and look for the one just above
-        # the one this year's income is activating.
-        for bracket in self.brackets:
-            if (bracket[0] > income and bracket[1] < rate):
-                threshold = bracket[0]
-                rate = bracket[1]
-
-        # Note: this can return (None, 1.0) iff the income is already
-        # in the top tax bracket.
-        return (threshold, rate)
-
-    def get_bracket_below_income(self, income):
-        """Return the next bracket below the one activated by income."""
-        assert income > 0, "Income should be >0 to be taxed"
-        bracket = self.get_bracket_for_income(income)
-        income = bracket[0]
-        return self.get_bracket_for_income(income)
-
-    def get_effective_tax_rate_for_income(self, income):
-        """Compute and return the effective tax rate for an income."""
-        if income <= 0: return 0
-        tax_bill = self.compute_taxes_for_income(income)
-        return float(tax_bill) / income
-
-    def adjust_with_multiplier(self, multiplier):
-        """Every year the IRS adjusts the income tax brackets for inflation."""
-        for bracket in self.brackets:
-            if bracket[0] != 1:
-                bracket[0] *= multiplier
-
-    def dump(self):
-        """Print out the tax brackets we're using in here."""
-        for x in self.brackets:
-            print "{:<20} -> {:<3}".format(x[0], utils.format_rate(x[1]))