Methodology

Every rule the engine applies is recorded in a register with its source and its current verification status. Figures are derived at request time from the same rates cache the app uses; nothing is hardcoded and nothing is stale by design.

The gold nisāb, in gramsMajority across the four schools; AAOIFI Sharia Standard No. 35

VerifiedSchools differ

The silver nisāb, in gramsMajority across the four schools

VerifiedSchools differ

Whether the gold or silver nisāb governs cash and mixed wealthContested between the schools and contemporary institutions

VerifiedSchools differ

legal.methodology.register.rules.hawl_measurement.rulelegal.methodology.register.rules.hawl_measurement.authority

VerifiedSchools differ

legal.methodology.register.rules.hawl_required.rulelegal.methodology.register.rules.hawl_required.authority

Verified

Whether the year restarts when wealth dips below the nisābDiffers by school: Hanafi against Shāfiʿī and Hanbalī

VerifiedSchools differ

Whether property for personal use is zakatableAgreement across the four schools

Verified

Whether the capital value of rental property is zakatableMajority position

Verified

Whether property held for sale counts as trade goodsMajority position

Verified

How, and when, rental income is zakatableMajority; some contemporary bodies differ on timing

VerifiedSchools differ

Which debts may be deducted from zakatable wealthDiffers by school and institution

VerifiedSchools differ

Money owed to you, and debts unlikely to be repaidDiffers by school

VerifiedSchools differ

Shares at full market value, or only their zakatable assetsAAOIFI Sharia Standard No. 35

VerifiedSchools differ

Pensions before the money can be drawnContemporary bodies differ; no direct classical text

VerifiedSchools differ

How business stock is valuedMajority position

Verified

Combining gold and silver when each is below its own nisābDiffers by school: Hanafi combines; Shāfiʿī is reported not to

VerifiedSchools differ

Zakat on the wealth of someone who has not reached pubertyDisputed between the schools; no source attached yet, so the engine will not calculate with it

Not yet verifiedSchools differ

Jewellery worn for personal useThe four schools differ

VerifiedSchools differ

How much Zakat al-Fitr is per personAgreed in principle; the modern weight equivalent varies

VerifiedSchools differ

Whether Zakat al-Fitr may be paid in cashHanafi permits it; the other three are reported to require food

VerifiedSchools differ

Whether, and how, cryptocurrency is zakatableNo consensus; individual contemporary fatwas only

VerifiedSchools differ

Two are in scholarly use: 85 g gold / 595 g silver (AAOIFI and most Western charities), and the classical 87.48 g / 612.36 g. You choose, and every result states which produced it and the gram weight it used.

Hanafi, Shāfiʿī, Mālikī and Hanbalī are covered. Where they differ — on worn jewellery, on whether metals pool with cash, on which nisāb governs — the result names the position that produced your figure rather than quietly picking one.

If you believe a ruling is wrong, write to us with the source. A correction to the register changes every figure the product produces, which is the point of keeping one.