Tax Calculation

How Tax is Calculated

Tax calculation in DashForDevs follows these steps:

1. Determine destination state from shipping address
2. Look up tax rate for the state (configured in dashboard)
3. Check product tax classes — different product types may have different rates
4. Check legality — some products may not be legal in certain states
5. Calculate per-item tax and return breakdown

Tax in Checkout

Tax is automatically calculated during checkout based on the shipping address:

// Tax is included in the checkout response
const { order } = await dash.checkout.complete({
  cartId: dash.cart.cartId,
  shipping: { state: "TX", ... },
  // ...
})

console.log(order.tax)  // "5.25" — automatically calculated

Displaying Tax Before Checkout

// Calculate tax to show in cart summary
const taxResult = await dash.tax.calculateForCart("TX")
const taxAmount = dash.tax.getTotal(taxResult)

// Display in cart
<div>
  <p>Subtotal: ${subtotal}</p>
  <p>Tax: ${taxAmount.toFixed(2)}</p>
  <p>Total: ${(Number(subtotal) + taxAmount).toFixed(2)}</p>
</div>

Configuring Tax Rates

Tax rates are set in the dashboard under Settings → Tax. Configure rates per state and per product tax class.

Next Steps

• Tax Rates — Rate configuration
• Create Order — Tax in checkout flow