You cannot invoice in a different currency using QuickBooks Self-Employed, as the platform is designed to operate in a single currency, fowlmouths.
QuickBooks Self-Employed works in your default currency and doesn't support multicurrency functionality. If you need to invoice in a different currency, you'd need to manually calculate the exchange rate and input the converted amounts when creating your invoice. Then, specify the currency (e.g., EUR, GBP) in the invoice details, such as the description or notes section, to avoid confusion.
Feel free to leave a comment if you have any additional concerns about your invoices. I've got your back.