VAT calculator

Gross/net · Italian rates · WooCommerce

This VAT calculator shows net amount, VAT, and gross total for the standard Italian rates 4%, 10%, and 22%. Start from a VAT-inclusive or ex-VAT price, use price list mode for several lines at once, and open Rates & formulas for typical use cases and PHP helpers for WooCommerce.

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 );

How to use this calculator

Single amount: enter a value in the active field (gross or net) and use the centre control to swap direction.
Quick-copy rate: pick 4%, 10%, or 22% to highlight that column and copy its figures.
Price list: paste one price per line; choose gross (split VAT) or net (add VAT) and get all three rates.
Rates & formulas: indicative categories and formulas net = gross / (1 + rate), gross = net × (1 + rate).

Rates and categories are indicative only; always confirm with current rules and special schemes (e.g. margin schemes, exemptions).