Tax
Advik Booking supports a single global tax rate with inclusive or exclusive pricing. It's designed to be simple — most businesses only need this. Multi-rate or regional tax is available in the Pro add-on.
Where to find it
Advik Booking → Settings → General → Tax.
Settings
| Setting | What it does |
|---|---|
| Enable tax | Master toggle. Off = no tax line on the form, no tax on the receipt. |
| Tax rate (%) | Number, 0–100, supports decimals. Example: 20 for 20% VAT, 8.875 for NYC sales tax. |
| Tax label | What shows on the form and receipt. Defaults to "Tax". Change to "VAT" (UK/EU), "GST" (AU/CA/NZ/IN), "IVA" (IT/ES), "TVA" (FR), "Sales tax" (US). |
| Tax inclusive | On = prices you enter already include tax. Off = tax is added on top. |
Inclusive vs exclusive — the practical difference
| Setting | You enter a service price of $100, tax rate 20% | Customer sees on the form | Customer pays |
|---|---|---|---|
| Tax inclusive: off | Subtotal = $100, tax = $20 | Subtotal $100 / Tax $20 / Total $120 | $120 |
| Tax inclusive: on | Subtotal = $100 (of which tax is $16.67) | Subtotal $100 (incl. $16.67 tax) / Total $100 | $100 |
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Which one should I pick?
- B2C (retail customers) — most countries require inclusive pricing. The customer sees a single price.
- B2B (invoiced businesses) — exclusive is common, because the invoice needs to show the tax line separately for tax credits.
- US sales tax — exclusive is standard, shown on the receipt as a separate line.
How the math works
Behind the scenes, the formula is:
js
// Exclusive (tax added on top)
subtotal = service.basePrice + fields + addons - discount;
tax = round(subtotal * taxRate / 100, 2);
total = subtotal + tax;
// Inclusive (tax already in the price)
subtotal = service.basePrice + fields + addons - discount;
tax = round(subtotal - subtotal / (1 + taxRate/100), 2);
total = subtotal;Important: tax is calculated on the post-discount subtotal. When a coupon is applied, the tax base shrinks accordingly. This matches what most jurisdictions expect.
Examples
UK VAT 20%, inclusive
- Service base: $100
- Field: 2 bedrooms × $15 = $30
- Add-on: Inside oven = $40
- Subtotal: $170 (of which VAT = $28.33)
- Coupon "10% off": −$17
- Taxed subtotal: $153 (of which VAT = $25.50)
- Total: $153
US sales tax 8.875%, exclusive
- Service base: $100
- Field: 2 bedrooms × $15 = $30
- Add-on: Inside oven = $40
- Subtotal: $170
- Coupon: −$10
- Taxed subtotal: $160
- Sales tax: $14.20
- Total: $174.20
Per-service tax override
For businesses in mixed-tax jurisdictions, you can override the tax rate on a per-service basis. Open the service → Pricing tab →Tax rate override. Set to 0 to make the service tax-exempt.
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Complex tax?
If you need multiple tax rates (e.g. standard 20% + reduced 5% + zero-rated goods) or per-region tax, this is handled in the Pro add-on. The free version intentionally keeps it simple.