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by azth 1536 days ago
What's fair is a constant rate across everyone regardless of income level (once a minimum threshold is reached) as Islam does in Zakat. Without getting into too many details, it requires 2.5% of the amount of money sitting in the bank (or equivalent) for a year to be donated to certain classes of charity. It works so well that it has been reported that there were no poor people left to accept Zakat in Iraq during the Ummayad period.