Zakat Calculator Code [HCUSA Website] - v1

Calculator structure is solid, but there are a few technical and financial accuracy issues we should fix for a masjid or nonprofit site.

Below is a cleaned-up, safer, and more accurate version of your JavaScript, plus key improvements.

⚠️ Issues in Current Script

Uses parseInt()
→ This removes cents (e.g., 100.75 becomes 100).
Zakat should calculate to two decimal places.
Total Assets is incorrect
You’re subtracting liabilities inside the same total variable — so:
- “Total Assets” is actually “Net Assets”
No Nisab Check
Zakat should only apply if total zakatable wealth exceeds Nisab.
Negative values reset silently but not sanitized fully
Repeated DOM lookups (inefficient)

✅ Improved & Corrected Script

Replace your <script> block with this:

<script>
function AutoCalc() {
 
    let assetIds = [
        "cash_value",
        "gold_value",
        "silver_value",
        "business_value",
        "share_assets_value",
        "RRSP_value",
        "RESP_value",
        "property_value",
        "cash_investment",
        "debit_own_value",
        "other_value"
    ];
 
    let liabilityIds = [
        "liabilities_value",
        "business2_value"
    ];
 
    let totalAssets = 0;
    let totalLiabilities = 0;
 
    // Calculate Assets
    assetIds.forEach(id => {
        let val = parseFloat(document.getElementById(id).value) || 0;
        if (val < 0) val = 0;
        totalAssets += val;
    });
 
    // Calculate Liabilities
    liabilityIds.forEach(id => {
        let val = parseFloat(document.getElementById(id).value) || 0;
        if (val < 0) val = 0;
        totalLiabilities += val;
    });
 
    let totalZakatable = totalAssets - totalLiabilities;
    if (totalZakatable < 0) totalZakatable = 0;
 
    // Nisab check (Silver Nisab used here)
    let silverNisab = 557.25;
 
    let zakatDue = 0;
    if (totalZakatable >= silverNisab) {
        zakatDue = totalZakatable * 0.025;
    }
 
    // Format numbers to 2 decimals
    totalAssets = totalAssets.toFixed(2);
    totalLiabilities = totalLiabilities.toFixed(2);
    totalZakatable = totalZakatable.toFixed(2);
    zakatDue = zakatDue.toFixed(2);
 
    // Update UI
    document.getElementById("totalAssets").value = totalAssets;
    document.getElementById("totalLiabilities").value = totalLiabilities;
    document.getElementById("totalZakat").value = totalZakatable;
    document.getElementById("totalZakatDue").value = zakatDue;
}
</script>

🔥 What This Fixes

✔ Keeps cents (financial accuracy)
✔ Separates assets from liabilities correctly
✔ Applies proper 2.5% calculation
✔ Adds Nisab check
✔ Prevents negative Zakat
✔ Cleaner & easier to maintain

💡 Optional (Recommended Enhancements)

1️⃣ Dynamic Nisab (Gold vs Silver Toggle)

You can add a dropdown:

Calculate using gold Nisab
Calculate using silver Nisab

This increases credibility.

2️⃣ Auto-format Currency with Commas

Replace:

.toFixed(2)

With:

toLocaleString('en-US', { minimumFractionDigits: 2 })

So it shows:

12,450.75

3️⃣ Show Message If Below Nisab

Add:

if (totalZakatable < silverNisab) {
    zakatDue = 0;
    alert("Your assets are below Nisab. Zakat is not obligatory.");
}

(Or better: display a message instead of alert.)

🕌 Strategic Recommendation (For Nonprofit Trust)

Because this is religiously sensitive:

Add this disclaimer under calculator:

This calculator provides an estimate. Please consult a qualified scholar for specific rulings regarding your situation.

This increases trust significantly.

Good to consider:

🧮 Build a premium RafeeqPro-ready Zakat calculator component
📱 Make this fully responsive and modern UI
🔁 Connect it directly to GiveWP donation amounts
🌍 Add live gold/silver price API
📊 Convert this into a lead-generation funnel version