Thou hast enquired about the Ḥuqúq. From one’s annual
income, all expenses during the year are deductible, and on what is left
19% is payable to the Ḥuqúq. Thus, a person hath
earned £1,000 income out of his business. After deducting his annual
expenses of, say, £600, he would have a surplus of £400 on which
Ḥuqúq is payable at the rate of 19%. This would amount
to £76 to be offered for charitable purposes to the
Ḥuqúq.