Your costs in the trip's currency, your client's price in theirs, at a rate you fix. How each one is used, and what happens when they differ.
A trip has one working currency: the trip currency, set in the trip settings on the Overview and seeded from your agency default. Your costs, your margins and your pricing table are recorded in it, and each trip can have its own, so the Morocco trip can work in dirhams while the Scotland trip works in pounds.
On a trip that already has amounts, switching the trip currency stops to ask what you mean. Keep the numbers relabels them, for when the prices were right and only the currency label was wrong. Convert at the day's rate rewrites every amount using that day's exchange rate. Amounts never change on their own.
A Norwegian group wants to see kroner, whatever currency you buy the trip in. Below the trip currency sits Client currency: pick the currency your client pays in and set the rate. RoundPlan suggests the mid-market rate of the day as a reference, and you can keep it or type your own. The rate is fixed for that trip; it never moves on its own, so the price your client approved does not change afterwards.
With a client currency set, the client's page quotes in it, new payments are recorded in it, and the invoice is issued in it with the client's own numbers. Your side does not move: costs, margins and the Overview stay in the trip currency, with what the client paid converted back at your fixed rate.
Each supplier in your libraries carries its own currency, and so does every course in the catalog. Add one priced in a different currency than the trip and RoundPlan prefills an editable estimate at the day's rate, marked as such, so you can replace it with the price you actually negotiated. The estimate is a starting point for your cost, never something the client sees.
All the options of a deal share one trip currency, so a client comparing versions compares like with like.
Still stuck? Email support@roundplan.io and a human replies.