The tourist tax is not your revenue: you collect it for the local authority and pass it on. It must therefore appear separately everywhere.
Finding your rate
Set by the local authority, per person per night, depending on your property's classification. A departmental surcharge is often added. The authority's own decision is the only document that counts; your tourist office will provide it.
Entering it in Rates
- Classified lodging: choose "a fixed amount" and enter the rate per adult per night, surcharge included.
- Unclassified lodging: choose "a percentage", then enter the rate voted by your town (1 to 5 %), the cap per adult per night, and the additional taxes as a percentage of the tax (often 10 % for the département).
For an unclassified lodging, the site takes the price of the nights after discounts, without cleaning or extras. It divides it by the nights and by every occupant, children included. Then it applies the rate, the cap and the additional taxes. Only adults pay. No figure is suggested by default: it must come from your town's decision.
Exemptions
Minors are always exempt, and the calculation counts adults only. Other exemptions exist (seasonal workers in the town, emergency housing): they are rare for a holiday home and are dealt with by hand when you pay the tax over.
What your website does
The amount is calculated at booking, shown on its own line in the guest's summary, carried onto the invoice, and totalled in your statistics — so you have the amount to pass on without recalculating it.
Passing it on
You pay the local authority at the deadline it sets, usually every six months, with a summary of the nights sold. Keep the detail per stay: it is what an inspection asks for, and exactly what your export contains.