Purification calculator
Calculate the amount to donate to purify the impure share of your investment income. Built on the AAOIFI methodology, the calculator applies each stock's impure revenue percentage to your position value.
Purification estimate
Estimate your purification obligations instantly
Showing a sample. Type any ticker to try your own.
How purification works
Enter your stock
Type a ticker symbol to see its AAOIFI compliance status and impure revenue percentage.
Enter your investment value
Input the value of your position in that stock.
Get your amount
The calculator multiplies your investment by the impure revenue percentage to determine the exact purification amount.
The purification amount represents the portion of your investment returns attributable to non-compliant company activities. Donating this amount to charity purifies your income and may qualify as a charitable tax deduction. Confirm with your tax advisor.