Created
October 13, 2012 08:32
-
-
Save luispedro/3883828 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import numpy as np | |
| from matplotlib import pyplot as plt | |
| def irs_paid(val): | |
| paid = 0 | |
| def sub0(y, x): | |
| if (val <= y): return 0; | |
| if (val < x): return val - y; | |
| return x - y; | |
| return sub0(0,7000)*0.145 + sub0(7000,20000)*0.285 + sub0(20000,40000)*0.37 + sub0(40000,80000)*0.45 + (val - 80000 if (val > 80000) else 0) * 0.48; | |
| def total_contrib(val): | |
| raw = val * 1.2375; | |
| after_ss = 0.89 * val; | |
| irs = irs_paid(after_ss); | |
| irs_rate = irs / after_ss; | |
| after_irs = after_ss - irs; | |
| contribution = raw - after_irs; | |
| contribution_rate = contribution/raw; | |
| return contribution_rate | |
| salary = np.arange(1,5000*12,5) | |
| contrib = np.array(map(total_contrib, salary)) | |
| plt.ylim(0,80) | |
| plt.plot(salary/12., contrib*100, 'b', lw=4, label='Tax on labour') | |
| plt.plot(salary/12., 15+contrib*100, 'g', lw=4, label='Add VAT (at 15%)') | |
| plt.xlabel('Salary (per month, 12 salaries)') | |
| plt.ylabel('Total tax rate (%)') | |
| plt.legend(loc='best') | |
| plt.savefig('taxrates.png') | |
| import numpy as np | |
| from matplotlib import pyplot as plt | |
| def irs_paid(val): | |
| paid = 0 | |
| def sub0(y, x): | |
| if (val <= y): return 0; | |
| if (val < x): return val - y; | |
| return x - y; | |
| return sub0(0,7000)*0.145 + sub0(7000,20000)*0.285 + sub0(20000,40000)*0.37 + sub0(40000,80000)*0.45 + (val - 80000 if (val > 80000) else 0) * 0.48; | |
| def total_contrib(val): | |
| raw = val * 1.2375; | |
| after_ss = 0.89 * val; | |
| irs = irs_paid(after_ss); | |
| irs_rate = irs / after_ss; | |
| after_irs = after_ss - irs; | |
| contribution = raw - after_irs; | |
| contribution_rate = contribution/raw; | |
| return contribution_rate | |
| salary = np.arange(1,5000*12,5) | |
| contrib = np.array(map(total_contrib, salary)) | |
| plt.ylim(0,80) | |
| plt.plot(salary/12., contrib*100, 'b', lw=4, label='Tax on labour') | |
| plt.plot(salary/12., 15+contrib*100, 'g', lw=4, label='Add VAT (at 15%)') | |
| plt.xlabel('Salary (per month, 12 salaries)') | |
| plt.ylabel('Total tax rate (%)') | |
| plt.legend(loc='best') | |
| plt.savefig('taxrates.png') |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment