Hawl is the lunar-year condition used for many forms of wealth Zakat. A lunar year is approximately 354 or 355 days. Your assessment depends on when eligible wealth reaches nisab and the rules you follow for changes during the year. A Gregorian annual reminder does not exactly follow a Hijri anniversary.

Establish the starting point
Identify when you first owned the relevant minimum eligible wealth. Keep evidence such as account statements and acquisition dates. If you already have an annual Zakat date, use that history rather than restarting simply because you opened a new account.
Why temporary dips matter
Schools differ over the effect of falling below nisab during the year. The Hanafi approach places particular importance on the beginning and end of the period, with loss of all qualifying wealth requiring separate consideration. Other approaches may require the threshold to be maintained throughout.
A statement that every brief fall below nisab always restarts the clock is therefore too broad. Get guidance when your wealth history is uncertain or has substantial interruptions.
New salary, gifts and inheritance
Additional wealth may join an existing assessment under the method followed. You do not necessarily need a separate anniversary for every pound received. Conversely, ownership of a delayed inheritance or trust interest is not established solely by the date someone died. Record when you obtained the relevant ownership and control.
Using a calendar reminder
Save your Hijri anniversary and check its corresponding local date each year. Our calendar tool creates one reminder for the date you select; it does not claim to predict five exact lunar anniversaries by repeatedly adding 354 days. A reminder prompts a review rather than proving that an obligation has arisen.
Sources & calculation method
These sources inform this guide. A linked source does not endorse this site, and its publication date may differ from this page’s update date.
- National Zakat Foundation: understanding and calculating Zakat
- National Zakat Foundation: missed Zakat
Scholarly methods can produce different results. See the method choices that affect a Zakat estimate and our editorial policy. This is educational guidance, not a personal ruling or a claim of named scholarly review.
To cite this guide: “Hawl explained: your lunar Zakat anniversary”, World Aid Network, updated 8 September 2026, https://zakat-calculator.org.uk/hawl-explained