VAT calculator

Gross/net · Rates · WooCommerce

Enter an amount and calculate included or stripped VAT for all three rates at once. Exportable summary table and WooCommerce PHP snippets included.

Enter a gross or net price

Gross price (VAT included) incl. VAT

Net price (VAT excluded) excl. VAT

Rate for quick copy:

Split VAT (gross → net)

net = gross / (1 + rate)

Add VAT (net → gross)

gross = net × (1 + rate)

VAT amount

vat = gross − net

Super-reduced rate

Essential foodstuffs
Vegetables, fruit, cereals, pulses
Pharmaceutical products
Books, newspapers, periodicals
Social housing
First-home sales
Urban public transport

10%

Reduced rate

Food products (meat, fish, eggs…)
Food and drink supply
Restaurants, bars, catering
Hotels and accommodation
Domestic electricity
Methane gas for heating
Cleaning, removals

22%

Standard rate

All goods and services not specifically
falling under other rates.

Electronics, clothing, cars,
professional services, software,
advertising, consulting, generic
e-commerce, tools, machinery

PHP functions for WooCommerce / WordPress

/**
 * Calcolo IVA per WooCommerce / WordPress
 * Aliquote italiane: 4%, 10%, 22%
 */

function scorpora_iva( $lordo, $aliquota = 22 ) {
    $netto = $lordo / ( 1 + ( $aliquota / 100 ) );
    return [
        'netto'    => round( $netto, 2 ),
        'iva'      => round( $lordo - $netto, 2 ),
        'lordo'    => $lordo,
        'aliquota' => $aliquota,
    ];
}

function aggiungi_iva( $netto, $aliquota = 22 ) {
    $lordo = $netto * ( 1 + ( $aliquota / 100 ) );
    return [
        'netto'    => $netto,
        'iva'      => round( $lordo - $netto, 2 ),
        'lordo'    => round( $lordo, 2 ),
        'aliquota' => $aliquota,
    ];
}

// Uso:
// $r = scorpora_iva( 122, 22 );  → netto: 100, iva: 22
// $r = aggiungi_iva( 100, 22 );  → lordo: 122, iva: 22
// $r = scorpora_iva( wc_get_price_including_tax( $product ), 22 );

VAT calculation is one of the most frequent operations for anyone managing an e-commerce store or issuing invoices. Rates (4%, 10%, 22%) apply to different contexts and the calculation must always be accurate.

This calculator:

Calculates VAT amount and gross total from the net amount
Strips VAT from a gross price
Shows results for all three rates simultaneously
Batch mode for multiple amounts
WooCommerce PHP snippets for price management
CSV export