How the Zakat Calculator works
Zakat is one of the five pillars of Islam: an obligatory transfer of a fixed share of qualifying wealth to those entitled to receive it, once that wealth has been held for a full lunar year (hawl) and it reaches the nisab minimum. The calculation itself is simple arithmetic — the part that takes judgment is deciding which assets count and what to subtract.
The formula
Add your zakatable assets, subtract short-term debts, and compare the result to the nisab threshold:
Zakatable wealth = Cash + Gold/silver + Investments + Receivables − Debts due now
Zakat due = Zakatable wealth × 2.5%, but only if Zakatable wealth ≥ Nisab. If it is below nisab, zakat is not obligatory that year.
What counts as zakatable wealth
- Cash, bank & savings: checking, savings, and cash on hand.
- Gold & silver: the current market value of gold and silver you own, whether jewelry, coins, or bars (scholars differ on personal-use jewelry; the calculator includes it as a conservative default).
- Investments & business assets: stocks, mutual funds, and business inventory held for trade, valued at current market price.
- Money owed to you: receivables you reasonably expect to collect.
- Debts & bills due now: short-term liabilities — money you owe that is due immediately — are subtracted before applying the rate. Long-term obligations like the remaining balance on a mortgage are generally not deducted in full under most scholarly opinions.
Personal-use items are excluded entirely: your primary home, car, furniture, and clothing are not zakatable regardless of their value.
Worked example
With the calculator's defaults — $8,000 cash, $3,000 in gold/silver, $2,500 in investments, and $500 owed to you, minus $1,200 in debts due now — zakatable wealth is $12,800. At a $5,440 nisab threshold, that wealth clears the minimum, so zakat due is $12,800 × 2.5% = $320, or about $26.67 per month if you set money aside monthly rather than paying in one lump sum.
Understanding the nisab threshold
Nisab is the minimum wealth a Muslim must hold before zakat becomes obligatory, and it is defined in metal, not currency: traditionally 612.36 grams of silver, or 87.48 grams of gold under an alternative standard many scholars also accept. Because the silver standard is a smaller dollar value, more people meet it, which is why many practitioners use it as the more precautionary choice. Metal prices move constantly, so this calculator asks you to enter the current nisab value in your own currency — check today's spot price for silver or gold and convert before you calculate.
Assumptions and limits
This calculator applies the standard 2.5% (1/40) rate used for cash, gold, silver, and trade goods — the rate most commonly cited for general personal wealth. It does not cover the different rates that apply to agricultural produce, livestock, or mined resources, and it does not resolve differences between schools of Islamic jurisprudence on deductible debts or jewelry treatment. Use it as a starting estimate and consult a knowledgeable scholar or your local zakat authority for rulings specific to your situation.