Zakat and Nisab: understanding the 2.5% calculation

A Zakat estimate is not simply “savings × 2.5%”. The calculation first needs a view of eligible wealth, deductible liabilities and the Nisab threshold being followed.

The Bethemesh Zakat calculator makes that arithmetic explicit. It estimates an amount; it does not make a personal religious ruling about which assets or liabilities apply to you.

What is Nisab?

Nisab is the minimum wealth threshold relevant to Zakat liability under the method being followed. In a modern currency, the threshold is commonly expressed by valuing a reference weight of gold or silver at the current price per gram.

Because gold and silver no longer have the same relative market value they once did, the monetary threshold can differ greatly depending on which metal is used.

Why do Nisab weights differ between calculators?

This is one of the most important assumptions to check. National Zakat Foundation and Islamic Relief UK commonly publish 87.48 g of gold and 612.36 g of silver, while NZF also notes another opinion using 85 g of gold and 595 g of silver.

Bethemesh currently uses the latter 85 g / 595 g standard.

Two calculators can therefore produce different Nisab values even when they use the same metal price and currency.

Gold or silver?

Different schools, organisations and circumstances can lead to different guidance on which reference to use. Bethemesh does not select one on your behalf.

Choose gold or silver and enter the relevant price per gram in your currency. The tool then applies:

Gold Nisab   = gold price per gram × 85
Silver Nisab = silver price per gram × 595

Use a metal price that is current for the date and consistent with the currency selected.

Net eligible assets

The calculator adds the amounts you enter for:

• cash and bank balances;
• gold value;
• silver value;
• investments you are treating as eligible;
• recoverable receivables.

It then subtracts the deductible debts you enter:

net assets = eligible assets − deductible debts

If net assets meet or exceed the selected Nisab, the estimate applies 2.5%.

Simple example

Suppose, only to illustrate the arithmetic, that net eligible assets are €10,000 and your chosen Nisab is €8,500.

€10,000 × 2.5% = €250

The example does not determine which of your personal assets should be included. It only shows what happens after those inputs and the Nisab method have been decided.

Why the calculator asks for metal prices

Nisab is not a fixed amount in euros, dollars or pounds. Its currency value moves with the reference metal price.

Copying a currency threshold from an old article can therefore be misleading. Entering the price per gram recalculates the threshold for the moment of your estimate.

What the calculator cannot decide

A formula alone cannot determine questions such as:

• which investments count;
• how much debt is deductible;
• how personal jewellery is treated;
• which Nisab standard you follow;
• the anniversary date of your Zakat cycle;
• treatment of business inventory or complex assets.

For a non-trivial case, use the calculator to organise the numbers and then check the religious method appropriate to your situation.

Summary

A transparent Zakat calculator should show its assumptions: eligible categories, debts, metal reference, weight standard and metal price. That transparency explains why two estimates may differ without hiding the arithmetic.

FAQ

Is Zakat always exactly 2.5%?

2.5% is commonly applied to certain categories of wealth under the relevant holding-period rules, but not every type of asset is necessarily governed by the same calculation. Bethemesh focuses on the common 2.5% wealth case.

Is Nisab a fixed amount in my currency?

No. Its currency value depends on the price of the reference metal.

Why does Bethemesh use 85 g and 595 g?

Those weights are one recognised standard. Other organisations use 87.48 g and 612.36 g, so the convention is stated explicitly rather than hidden.