The FX rate used on the platform is a prevailing rate (also known as Mid Market Rate) and is provided to give you an estimation of what your employee cost might look like taking into consideration the currency your employee will be paid in. This rate is not the bank currency conversion rate and we revise it periodically.
For invoices, we use exchange rates determined and provided by our bank at the beginning of the month and they are fixed for the entire month. Therefore, you may notice that the rate in effect in the invoice is different from the rate provided by the salary calculator. This essentially means that Multiplier aims to protect its clients from currency fluctuations (if any) throughout the month.