Zakat is 2.5% of your net zakatable wealth held for one lunar year, when it is above the Nisab. The calculator adds cash, gold, silver and business assets, subtracts debts you owe, and compares the total with the silver Nisab of 52.5 tola (about 612.36 g). Enter today's silver price per tola to set the Nisab. Net wealth of Rs 1,000,000 above the Nisab gives Zakat of Rs 25,000.
For rulings on your own situation, ask a qualified scholar.
Zakat is due on wealth held for a full lunar year above the Nisab. Enter the latest silver price per tola from your local sarafa market for an accurate Nisab. See also our Islamic content page.