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World Aid Network

How the calculator and giving journey work

How we work: estimate Zakat with the free calculator, give through secure Stripe checkout, and how we pay partner hospitals for named patients.

By World Aid NetworkUpdated 3 min readHow we check guides

The quick answer

Use the calculator to estimate what you owe, then give on this site if you choose to. We pay partner hospitals and vetted local relief partners directly, against trustee-approved lists of named patients, and never give cash to individuals.

A surgical team performing cataract surgery

Calculate and review

Gather values for your Zakat date, select the method you follow and check the calculation breakdown. The result is conditional on your entries; it cannot establish ownership, your financial history or recipient eligibility. See the calculation method.

Choose a purpose and a cause

At checkout you choose Zakat or Sadaqah and a cause. Zakat can go to eye surgery or cancer treatment only; emergency relief and “where most needed” are Sadaqah only. A gift to a chosen cause stays with that cause. This site’s checkout cannot accept Fitrana, fidya or kaffarah.

We do not issue Shariah rulings. Read whether Zakat can fund medical treatment if you are unsure how a hospital payment fits the approach you follow.

How we pay for care

We do not run our own hospitals. We pay partner hospitals and vetted local relief partners directly for named patients and families on trustee-approved lists. Treatment is given by licensed partner clinicians registered with the PMDC in Pakistan, the KKI in Indonesia or the MMC in Malaysia. World Aid Network is governed by named trustees under a written constitution (PDF).

Payments and records

Card payments run through Stripe Checkout, so your card details never reach our servers. Gift Aid is not available. Keep your receipt, valuation and method with your Zakat record. The calculator’s saved browser data is your working record, not proof that a payment was made. For receipts, refunds or a monthly gift, see contact us.

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.

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: “How the calculator and giving journey work”, World Aid Network, updated 24 October 2026, https://zakat-calculator.org.uk/how-we-work