Hawl (حول) is the one complete lunar year that net zakatable wealth must exceed the nisab threshold before zakat becomes due. The lunar year is approximately 354–355 days — roughly 10–11 days shorter than the Gregorian calendar year.
Key facts
- Hawl = one complete lunar year, approximately 354–355 days
- The clock starts when your net wealth first exceeds the nisab threshold
- If wealth drops below nisab at any point, the clock resets
- Zakat is calculated on the wealth held at the end of the hawl year
- Most UK Muslims use Ramadan as their annual zakat date
- This calculator assumes hawl has been completed — it cannot verify your holding period
What is Hawl?
The requirement for hawl ensures that zakat is only paid on settled, stable wealth — not on money that briefly passes through your hands. Someone who receives a large sum one month and spends it the next has not truly held that wealth for a year, and so no zakat is due on it.
The hawl requirement is agreed upon by all four madhabs for most forms of wealth: cash, gold, silver, and investments. There is no hawl requirement for certain agricultural produce and mineral wealth, but these categories are rarely applicable to UK Muslims.
When Does the Hawl Clock Start?
Your hawl clock begins on the date when your net zakatable wealth first exceeds the nisab threshold. It does not restart every time your wealth increases — only the starting point matters.
For example: if your wealth first exceeds the silver nisab on 1 Rajab 1447, your hawl anniversary falls on 1 Rajab 1448. Any wealth you have accumulated above nisab by that date is zakatable — including wealth acquired during the year, as long as your minimum balance remained above nisab throughout.
What Happens if Wealth Drops Below Nisab?
If at any point during the hawl year your net zakatable wealth drops below the nisab threshold, the hawl clock resets. Zakat is not due for that year. Your new hawl clock begins on the date when wealth rises above nisab again.
The Lunar Calendar vs the Gregorian Calendar
The Islamic lunar year (Hijri calendar) is approximately 354 days — about 11 days shorter than the Gregorian (solar) year. This means that over time, the same Islamic date falls earlier and earlier in the Western calendar each year, cycling through all seasons over a 33-year period.
This has a practical implication: if you use the Gregorian calendar to track your annual zakat date, you are calculating on a 365-day year rather than the correct 354-day hawl. Technically, this means you are delaying your zakat by 11 days each year — which most scholars treat as acceptable and not a significant violation. However, using the Islamic calendar for your zakat anniversary is more precise.
Choosing Your Zakat Anniversary
Most UK Muslims choose Ramadan as their annual zakat date, and this is a recommended practice — giving in Ramadan carries additional reward, and it is easier to remember a consistent annual date. Many scholars have issued guidance that paying zakat in Ramadan, even if it falls slightly before your precise hawl anniversary, is acceptable (paying in advance is permitted by the Hanafi, Shafi'i, and Hanbali madhabs; the Maliki madhab does not permit advance payment).
The important thing is to be consistent year to year. Pick a date, stick with it, and track your wealth accurately each time.
A Practical Example
Ahmad first accumulates wealth above the silver nisab on 15 Shawwal 1446 (approximately April 2025). His hawl anniversary is 15 Shawwal 1447 (approximately April 2026). He chooses to calculate on 1 Ramadan 1447 (approximately March 2026) — slightly before his precise hawl date.
At that date, Ahmad has £18,000 in savings, £3,000 in a Cash ISA, and 45 grams of gold jewellery. His madhab is Hanafi, so all the gold is included. His immediate debts are £2,000. Net zakatable wealth = £(18,000 + 3,000 + gold value − 2,000).
If this exceeds the silver nisab on that date, zakat at 2.5% is due. Paying in Ramadan before the exact hawl date is valid under Hanafi fiqh (advance payment is permitted).