Testing

Testing\InteractsWithTax builds a calculator with the shipped regimes and a rate map you choose — the package's own suite uses it:

use Cbox\Tax\Testing\InteractsWithTax;

$calc = $this->taxCalculator(['DK' => '25', 'FR' => '20']);

$assessment = $calc->assess($query);

Pass no rates to use the built-in defaults. Jurisdictions come from the real laravel-geo repository, so place-of-supply behaviour is exercised for free.

Exemptions

The same trait builds buyer exemptions from ISO code strings and asserts exempt outcomes:

$assessment = $calc->assess(new TaxQuery(
    // …amount, pricing, place, customer, seller…
    exemption: $this->taxExemption(
        type: ExemptionType::Resale,
        reference: 'CA-RESALE-42',
        subdivisions: ['US-CA'],   // or countries: ['DK'] for national VAT
    ),
));

$this->assertExempt($assessment, 'CA-RESALE-42'); // Exempt, tax 0, gross = net, reference present