The base currency
Your books are kept in one base currency. It is set from the country chosen when the company was created: for a Sri Lankan company that is LKR. Costs, stock values and reports are in the base currency.
Settings → Currencies & rates shows the base currency at the top, with how many currency pairs have rates.
When you need a rate
Add a rate when you deal in another currency, for example a supplier who invoices in USD. Each document remembers the rate it used, so later changes do not alter old documents.
Until you add a rate, goods from a foreign-currency supplier can still be received, but you must type the rate on the receipt.
Add a rate
- Open Settings → Currencies & rates and press "Add rate".
- In "Foreign currency", type the 3-letter code, for example USD. The base currency is filled in for you.
- In "1 USD =", type how many units of your base currency one unit is worth, for example the LKR value of one dollar.
- Choose "Valid from": the date the rate applies from. Entering the same date again replaces that day's rate.
- Optionally note the "Source", for example CBSL or a bank quote.
- Press "Save rate".
Reading the list
Rates are grouped by pair, such as USD→LKR. The rate in use today is marked "current"; a rate with a later start date is "future"; older rates are "superseded".
"New rate" on a row adds the next rate for that pair. "Delete" removes a rate: documents that already used it keep their copy, and new documents fall back to the previous rate.